717 lines
22 KiB
Python
717 lines
22 KiB
Python
# Only tests that raise an error and have no better location should go here.
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# Tests for specific groupby methods should go in their respective
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# test file.
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import datetime
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import re
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import numpy as np
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import pytest
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from pandas import (
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Categorical,
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DataFrame,
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Grouper,
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Series,
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)
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import pandas._testing as tm
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from pandas.tests.groupby import get_groupby_method_args
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@pytest.fixture(
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params=[
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"a",
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["a"],
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["a", "b"],
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Grouper(key="a"),
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lambda x: x % 2,
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[0, 0, 0, 1, 2, 2, 2, 3, 3],
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np.array([0, 0, 0, 1, 2, 2, 2, 3, 3]),
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dict(zip(range(9), [0, 0, 0, 1, 2, 2, 2, 3, 3])),
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Series([1, 1, 1, 1, 1, 2, 2, 2, 2]),
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[Series([1, 1, 1, 1, 1, 2, 2, 2, 2]), Series([3, 3, 4, 4, 4, 4, 4, 3, 3])],
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]
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)
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def by(request):
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return request.param
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@pytest.fixture(params=[True, False])
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def groupby_series(request):
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return request.param
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@pytest.fixture
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def df_with_string_col():
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df = DataFrame(
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{
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"a": [1, 1, 1, 1, 1, 2, 2, 2, 2],
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"b": [3, 3, 4, 4, 4, 4, 4, 3, 3],
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"c": range(9),
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"d": list("xyzwtyuio"),
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}
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)
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return df
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@pytest.fixture
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def df_with_datetime_col():
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df = DataFrame(
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{
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"a": [1, 1, 1, 1, 1, 2, 2, 2, 2],
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"b": [3, 3, 4, 4, 4, 4, 4, 3, 3],
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"c": range(9),
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"d": datetime.datetime(2005, 1, 1, 10, 30, 23, 540000),
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}
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)
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return df
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@pytest.fixture
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def df_with_timedelta_col():
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df = DataFrame(
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{
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"a": [1, 1, 1, 1, 1, 2, 2, 2, 2],
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"b": [3, 3, 4, 4, 4, 4, 4, 3, 3],
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"c": range(9),
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"d": datetime.timedelta(days=1),
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}
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)
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return df
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@pytest.fixture
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def df_with_cat_col():
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df = DataFrame(
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{
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"a": [1, 1, 1, 1, 1, 2, 2, 2, 2],
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"b": [3, 3, 4, 4, 4, 4, 4, 3, 3],
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"c": range(9),
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"d": Categorical(
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["a", "a", "a", "a", "b", "b", "b", "b", "c"],
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categories=["a", "b", "c", "d"],
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ordered=True,
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),
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}
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)
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return df
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def _call_and_check(klass, msg, how, gb, groupby_func, args, warn_msg=""):
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warn_klass = None if warn_msg == "" else FutureWarning
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with tm.assert_produces_warning(warn_klass, match=warn_msg):
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if klass is None:
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if how == "method":
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getattr(gb, groupby_func)(*args)
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elif how == "agg":
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gb.agg(groupby_func, *args)
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else:
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gb.transform(groupby_func, *args)
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else:
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with pytest.raises(klass, match=msg):
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if how == "method":
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getattr(gb, groupby_func)(*args)
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elif how == "agg":
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gb.agg(groupby_func, *args)
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else:
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gb.transform(groupby_func, *args)
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@pytest.mark.parametrize("how", ["method", "agg", "transform"])
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def test_groupby_raises_string(
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how, by, groupby_series, groupby_func, df_with_string_col
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):
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df = df_with_string_col
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args = get_groupby_method_args(groupby_func, df)
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gb = df.groupby(by=by)
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if groupby_series:
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gb = gb["d"]
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if groupby_func == "corrwith":
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assert not hasattr(gb, "corrwith")
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return
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klass, msg = {
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"all": (None, ""),
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"any": (None, ""),
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"bfill": (None, ""),
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"corrwith": (TypeError, "Could not convert"),
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"count": (None, ""),
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"cumcount": (None, ""),
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"cummax": (
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(NotImplementedError, TypeError),
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"(function|cummax) is not (implemented|supported) for (this|object) dtype",
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),
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"cummin": (
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(NotImplementedError, TypeError),
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"(function|cummin) is not (implemented|supported) for (this|object) dtype",
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),
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"cumprod": (
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(NotImplementedError, TypeError),
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"(function|cumprod) is not (implemented|supported) for (this|object) dtype",
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),
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"cumsum": (
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(NotImplementedError, TypeError),
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"(function|cumsum) is not (implemented|supported) for (this|object) dtype",
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),
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"diff": (TypeError, "unsupported operand type"),
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"ffill": (None, ""),
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"fillna": (None, ""),
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"first": (None, ""),
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"idxmax": (None, ""),
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"idxmin": (None, ""),
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"last": (None, ""),
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"max": (None, ""),
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"mean": (
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TypeError,
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re.escape("agg function failed [how->mean,dtype->object]"),
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),
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"median": (
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TypeError,
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re.escape("agg function failed [how->median,dtype->object]"),
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),
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"min": (None, ""),
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"ngroup": (None, ""),
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"nunique": (None, ""),
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"pct_change": (TypeError, "unsupported operand type"),
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"prod": (
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TypeError,
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re.escape("agg function failed [how->prod,dtype->object]"),
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),
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"quantile": (TypeError, "cannot be performed against 'object' dtypes!"),
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"rank": (None, ""),
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"sem": (ValueError, "could not convert string to float"),
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"shift": (None, ""),
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"size": (None, ""),
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"skew": (ValueError, "could not convert string to float"),
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"std": (ValueError, "could not convert string to float"),
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"sum": (None, ""),
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"var": (
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TypeError,
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re.escape("agg function failed [how->var,dtype->"),
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),
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}[groupby_func]
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if groupby_func == "fillna":
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kind = "Series" if groupby_series else "DataFrame"
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warn_msg = f"{kind}GroupBy.fillna is deprecated"
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else:
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warn_msg = ""
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_call_and_check(klass, msg, how, gb, groupby_func, args, warn_msg)
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@pytest.mark.parametrize("how", ["agg", "transform"])
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def test_groupby_raises_string_udf(how, by, groupby_series, df_with_string_col):
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df = df_with_string_col
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gb = df.groupby(by=by)
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if groupby_series:
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gb = gb["d"]
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def func(x):
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raise TypeError("Test error message")
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with pytest.raises(TypeError, match="Test error message"):
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getattr(gb, how)(func)
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@pytest.mark.parametrize("how", ["agg", "transform"])
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@pytest.mark.parametrize("groupby_func_np", [np.sum, np.mean])
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def test_groupby_raises_string_np(
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how, by, groupby_series, groupby_func_np, df_with_string_col
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):
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# GH#50749
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df = df_with_string_col
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gb = df.groupby(by=by)
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if groupby_series:
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gb = gb["d"]
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klass, msg = {
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np.sum: (None, ""),
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np.mean: (
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TypeError,
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re.escape("agg function failed [how->mean,dtype->object]"),
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),
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}[groupby_func_np]
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if groupby_series:
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warn_msg = "using SeriesGroupBy.[sum|mean]"
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else:
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warn_msg = "using DataFrameGroupBy.[sum|mean]"
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_call_and_check(klass, msg, how, gb, groupby_func_np, (), warn_msg=warn_msg)
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@pytest.mark.parametrize("how", ["method", "agg", "transform"])
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def test_groupby_raises_datetime(
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how, by, groupby_series, groupby_func, df_with_datetime_col
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):
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df = df_with_datetime_col
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args = get_groupby_method_args(groupby_func, df)
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gb = df.groupby(by=by)
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if groupby_series:
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gb = gb["d"]
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if groupby_func == "corrwith":
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assert not hasattr(gb, "corrwith")
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return
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klass, msg = {
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"all": (None, ""),
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"any": (None, ""),
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"bfill": (None, ""),
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"corrwith": (TypeError, "cannot perform __mul__ with this index type"),
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"count": (None, ""),
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"cumcount": (None, ""),
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"cummax": (None, ""),
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"cummin": (None, ""),
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"cumprod": (TypeError, "datetime64 type does not support cumprod operations"),
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"cumsum": (TypeError, "datetime64 type does not support cumsum operations"),
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"diff": (None, ""),
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"ffill": (None, ""),
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"fillna": (None, ""),
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"first": (None, ""),
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"idxmax": (None, ""),
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"idxmin": (None, ""),
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"last": (None, ""),
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"max": (None, ""),
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"mean": (None, ""),
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"median": (None, ""),
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"min": (None, ""),
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"ngroup": (None, ""),
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"nunique": (None, ""),
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"pct_change": (TypeError, "cannot perform __truediv__ with this index type"),
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"prod": (TypeError, "datetime64 type does not support prod"),
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"quantile": (None, ""),
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"rank": (None, ""),
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"sem": (None, ""),
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"shift": (None, ""),
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"size": (None, ""),
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"skew": (
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TypeError,
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"|".join(
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[
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r"dtype datetime64\[ns\] does not support reduction",
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"datetime64 type does not support skew operations",
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]
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),
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),
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"std": (None, ""),
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"sum": (TypeError, "datetime64 type does not support sum operations"),
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"var": (TypeError, "datetime64 type does not support var operations"),
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}[groupby_func]
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if groupby_func in ["any", "all"]:
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warn_msg = f"'{groupby_func}' with datetime64 dtypes is deprecated"
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elif groupby_func == "fillna":
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kind = "Series" if groupby_series else "DataFrame"
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warn_msg = f"{kind}GroupBy.fillna is deprecated"
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else:
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warn_msg = ""
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_call_and_check(klass, msg, how, gb, groupby_func, args, warn_msg=warn_msg)
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@pytest.mark.parametrize("how", ["agg", "transform"])
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def test_groupby_raises_datetime_udf(how, by, groupby_series, df_with_datetime_col):
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df = df_with_datetime_col
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gb = df.groupby(by=by)
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if groupby_series:
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gb = gb["d"]
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def func(x):
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raise TypeError("Test error message")
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with pytest.raises(TypeError, match="Test error message"):
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getattr(gb, how)(func)
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@pytest.mark.parametrize("how", ["agg", "transform"])
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@pytest.mark.parametrize("groupby_func_np", [np.sum, np.mean])
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def test_groupby_raises_datetime_np(
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how, by, groupby_series, groupby_func_np, df_with_datetime_col
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):
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# GH#50749
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df = df_with_datetime_col
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gb = df.groupby(by=by)
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if groupby_series:
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gb = gb["d"]
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klass, msg = {
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np.sum: (TypeError, "datetime64 type does not support sum operations"),
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np.mean: (None, ""),
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}[groupby_func_np]
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if groupby_series:
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warn_msg = "using SeriesGroupBy.[sum|mean]"
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else:
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warn_msg = "using DataFrameGroupBy.[sum|mean]"
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_call_and_check(klass, msg, how, gb, groupby_func_np, (), warn_msg=warn_msg)
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@pytest.mark.parametrize("func", ["prod", "cumprod", "skew", "var"])
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def test_groupby_raises_timedelta(func, df_with_timedelta_col):
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df = df_with_timedelta_col
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gb = df.groupby(by="a")
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_call_and_check(
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TypeError,
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"timedelta64 type does not support .* operations",
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"method",
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gb,
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func,
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[],
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)
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@pytest.mark.parametrize("how", ["method", "agg", "transform"])
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def test_groupby_raises_category(
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how, by, groupby_series, groupby_func, using_copy_on_write, df_with_cat_col
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):
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# GH#50749
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df = df_with_cat_col
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args = get_groupby_method_args(groupby_func, df)
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gb = df.groupby(by=by)
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if groupby_series:
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gb = gb["d"]
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if groupby_func == "corrwith":
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assert not hasattr(gb, "corrwith")
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return
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klass, msg = {
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"all": (None, ""),
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"any": (None, ""),
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"bfill": (None, ""),
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"corrwith": (
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TypeError,
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r"unsupported operand type\(s\) for \*: 'Categorical' and 'int'",
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),
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"count": (None, ""),
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"cumcount": (None, ""),
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"cummax": (
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(NotImplementedError, TypeError),
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"(category type does not support cummax operations|"
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"category dtype not supported|"
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"cummax is not supported for category dtype)",
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),
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"cummin": (
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(NotImplementedError, TypeError),
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"(category type does not support cummin operations|"
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"category dtype not supported|"
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"cummin is not supported for category dtype)",
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),
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"cumprod": (
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(NotImplementedError, TypeError),
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"(category type does not support cumprod operations|"
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"category dtype not supported|"
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"cumprod is not supported for category dtype)",
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),
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"cumsum": (
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(NotImplementedError, TypeError),
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"(category type does not support cumsum operations|"
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"category dtype not supported|"
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"cumsum is not supported for category dtype)",
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),
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"diff": (
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TypeError,
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r"unsupported operand type\(s\) for -: 'Categorical' and 'Categorical'",
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),
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"ffill": (None, ""),
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"fillna": (
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TypeError,
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r"Cannot setitem on a Categorical with a new category \(0\), "
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"set the categories first",
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)
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if not using_copy_on_write
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else (None, ""), # no-op with CoW
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"first": (None, ""),
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"idxmax": (None, ""),
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"idxmin": (None, ""),
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"last": (None, ""),
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"max": (None, ""),
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"mean": (
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TypeError,
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"|".join(
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[
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"'Categorical' .* does not support reduction 'mean'",
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"category dtype does not support aggregation 'mean'",
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]
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),
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),
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"median": (
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TypeError,
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"|".join(
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[
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"'Categorical' .* does not support reduction 'median'",
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"category dtype does not support aggregation 'median'",
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]
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),
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),
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"min": (None, ""),
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"ngroup": (None, ""),
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"nunique": (None, ""),
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"pct_change": (
|
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TypeError,
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r"unsupported operand type\(s\) for /: 'Categorical' and 'Categorical'",
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),
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"prod": (TypeError, "category type does not support prod operations"),
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"quantile": (TypeError, "No matching signature found"),
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"rank": (None, ""),
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"sem": (
|
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TypeError,
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"|".join(
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[
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"'Categorical' .* does not support reduction 'sem'",
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"category dtype does not support aggregation 'sem'",
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]
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),
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),
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"shift": (None, ""),
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"size": (None, ""),
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"skew": (
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TypeError,
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"|".join(
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[
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"dtype category does not support reduction 'skew'",
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"category type does not support skew operations",
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]
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),
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),
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"std": (
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TypeError,
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"|".join(
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[
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"'Categorical' .* does not support reduction 'std'",
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"category dtype does not support aggregation 'std'",
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]
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),
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),
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"sum": (TypeError, "category type does not support sum operations"),
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"var": (
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TypeError,
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"|".join(
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[
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"'Categorical' .* does not support reduction 'var'",
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"category dtype does not support aggregation 'var'",
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]
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),
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),
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}[groupby_func]
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|
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if groupby_func == "fillna":
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kind = "Series" if groupby_series else "DataFrame"
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warn_msg = f"{kind}GroupBy.fillna is deprecated"
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else:
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warn_msg = ""
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_call_and_check(klass, msg, how, gb, groupby_func, args, warn_msg)
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|
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@pytest.mark.parametrize("how", ["agg", "transform"])
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def test_groupby_raises_category_udf(how, by, groupby_series, df_with_cat_col):
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# GH#50749
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|
df = df_with_cat_col
|
|
gb = df.groupby(by=by)
|
|
|
|
if groupby_series:
|
|
gb = gb["d"]
|
|
|
|
def func(x):
|
|
raise TypeError("Test error message")
|
|
|
|
with pytest.raises(TypeError, match="Test error message"):
|
|
getattr(gb, how)(func)
|
|
|
|
|
|
@pytest.mark.parametrize("how", ["agg", "transform"])
|
|
@pytest.mark.parametrize("groupby_func_np", [np.sum, np.mean])
|
|
def test_groupby_raises_category_np(
|
|
how, by, groupby_series, groupby_func_np, df_with_cat_col
|
|
):
|
|
# GH#50749
|
|
df = df_with_cat_col
|
|
gb = df.groupby(by=by)
|
|
|
|
if groupby_series:
|
|
gb = gb["d"]
|
|
|
|
klass, msg = {
|
|
np.sum: (TypeError, "category type does not support sum operations"),
|
|
np.mean: (
|
|
TypeError,
|
|
"category dtype does not support aggregation 'mean'",
|
|
),
|
|
}[groupby_func_np]
|
|
|
|
if groupby_series:
|
|
warn_msg = "using SeriesGroupBy.[sum|mean]"
|
|
else:
|
|
warn_msg = "using DataFrameGroupBy.[sum|mean]"
|
|
_call_and_check(klass, msg, how, gb, groupby_func_np, (), warn_msg=warn_msg)
|
|
|
|
|
|
@pytest.mark.parametrize("how", ["method", "agg", "transform"])
|
|
def test_groupby_raises_category_on_category(
|
|
how,
|
|
by,
|
|
groupby_series,
|
|
groupby_func,
|
|
observed,
|
|
using_copy_on_write,
|
|
df_with_cat_col,
|
|
):
|
|
# GH#50749
|
|
df = df_with_cat_col
|
|
df["a"] = Categorical(
|
|
["a", "a", "a", "a", "b", "b", "b", "b", "c"],
|
|
categories=["a", "b", "c", "d"],
|
|
ordered=True,
|
|
)
|
|
args = get_groupby_method_args(groupby_func, df)
|
|
gb = df.groupby(by=by, observed=observed)
|
|
|
|
if groupby_series:
|
|
gb = gb["d"]
|
|
|
|
if groupby_func == "corrwith":
|
|
assert not hasattr(gb, "corrwith")
|
|
return
|
|
|
|
empty_groups = not observed and any(group.empty for group in gb.groups.values())
|
|
if (
|
|
not observed
|
|
and how != "transform"
|
|
and isinstance(by, list)
|
|
and isinstance(by[0], str)
|
|
and by == ["a", "b"]
|
|
):
|
|
assert not empty_groups
|
|
# TODO: empty_groups should be true due to unobserved categorical combinations
|
|
empty_groups = True
|
|
if how == "transform":
|
|
# empty groups will be ignored
|
|
empty_groups = False
|
|
|
|
klass, msg = {
|
|
"all": (None, ""),
|
|
"any": (None, ""),
|
|
"bfill": (None, ""),
|
|
"corrwith": (
|
|
TypeError,
|
|
r"unsupported operand type\(s\) for \*: 'Categorical' and 'int'",
|
|
),
|
|
"count": (None, ""),
|
|
"cumcount": (None, ""),
|
|
"cummax": (
|
|
(NotImplementedError, TypeError),
|
|
"(cummax is not supported for category dtype|"
|
|
"category dtype not supported|"
|
|
"category type does not support cummax operations)",
|
|
),
|
|
"cummin": (
|
|
(NotImplementedError, TypeError),
|
|
"(cummin is not supported for category dtype|"
|
|
"category dtype not supported|"
|
|
"category type does not support cummin operations)",
|
|
),
|
|
"cumprod": (
|
|
(NotImplementedError, TypeError),
|
|
"(cumprod is not supported for category dtype|"
|
|
"category dtype not supported|"
|
|
"category type does not support cumprod operations)",
|
|
),
|
|
"cumsum": (
|
|
(NotImplementedError, TypeError),
|
|
"(cumsum is not supported for category dtype|"
|
|
"category dtype not supported|"
|
|
"category type does not support cumsum operations)",
|
|
),
|
|
"diff": (TypeError, "unsupported operand type"),
|
|
"ffill": (None, ""),
|
|
"fillna": (
|
|
TypeError,
|
|
r"Cannot setitem on a Categorical with a new category \(0\), "
|
|
"set the categories first",
|
|
)
|
|
if not using_copy_on_write
|
|
else (None, ""), # no-op with CoW
|
|
"first": (None, ""),
|
|
"idxmax": (ValueError, "empty group due to unobserved categories")
|
|
if empty_groups
|
|
else (None, ""),
|
|
"idxmin": (ValueError, "empty group due to unobserved categories")
|
|
if empty_groups
|
|
else (None, ""),
|
|
"last": (None, ""),
|
|
"max": (None, ""),
|
|
"mean": (TypeError, "category dtype does not support aggregation 'mean'"),
|
|
"median": (TypeError, "category dtype does not support aggregation 'median'"),
|
|
"min": (None, ""),
|
|
"ngroup": (None, ""),
|
|
"nunique": (None, ""),
|
|
"pct_change": (TypeError, "unsupported operand type"),
|
|
"prod": (TypeError, "category type does not support prod operations"),
|
|
"quantile": (TypeError, ""),
|
|
"rank": (None, ""),
|
|
"sem": (
|
|
TypeError,
|
|
"|".join(
|
|
[
|
|
"'Categorical' .* does not support reduction 'sem'",
|
|
"category dtype does not support aggregation 'sem'",
|
|
]
|
|
),
|
|
),
|
|
"shift": (None, ""),
|
|
"size": (None, ""),
|
|
"skew": (
|
|
TypeError,
|
|
"|".join(
|
|
[
|
|
"category type does not support skew operations",
|
|
"dtype category does not support reduction 'skew'",
|
|
]
|
|
),
|
|
),
|
|
"std": (
|
|
TypeError,
|
|
"|".join(
|
|
[
|
|
"'Categorical' .* does not support reduction 'std'",
|
|
"category dtype does not support aggregation 'std'",
|
|
]
|
|
),
|
|
),
|
|
"sum": (TypeError, "category type does not support sum operations"),
|
|
"var": (
|
|
TypeError,
|
|
"|".join(
|
|
[
|
|
"'Categorical' .* does not support reduction 'var'",
|
|
"category dtype does not support aggregation 'var'",
|
|
]
|
|
),
|
|
),
|
|
}[groupby_func]
|
|
|
|
if groupby_func == "fillna":
|
|
kind = "Series" if groupby_series else "DataFrame"
|
|
warn_msg = f"{kind}GroupBy.fillna is deprecated"
|
|
else:
|
|
warn_msg = ""
|
|
_call_and_check(klass, msg, how, gb, groupby_func, args, warn_msg)
|
|
|
|
|
|
def test_subsetting_columns_axis_1_raises():
|
|
# GH 35443
|
|
df = DataFrame({"a": [1], "b": [2], "c": [3]})
|
|
msg = "DataFrame.groupby with axis=1 is deprecated"
|
|
with tm.assert_produces_warning(FutureWarning, match=msg):
|
|
gb = df.groupby("a", axis=1)
|
|
with pytest.raises(ValueError, match="Cannot subset columns when using axis=1"):
|
|
gb["b"]
|