85 lines
2.0 KiB
Python
85 lines
2.0 KiB
Python
from contextlib import contextmanager
|
|
import os
|
|
import tempfile
|
|
|
|
import pytest
|
|
|
|
from pandas.io.pytables import HDFStore
|
|
|
|
tables = pytest.importorskip("tables")
|
|
# set these parameters so we don't have file sharing
|
|
tables.parameters.MAX_NUMEXPR_THREADS = 1
|
|
tables.parameters.MAX_BLOSC_THREADS = 1
|
|
tables.parameters.MAX_THREADS = 1
|
|
|
|
|
|
def safe_remove(path):
|
|
if path is not None:
|
|
try:
|
|
os.remove(path)
|
|
except OSError:
|
|
pass
|
|
|
|
|
|
def safe_close(store):
|
|
try:
|
|
if store is not None:
|
|
store.close()
|
|
except OSError:
|
|
pass
|
|
|
|
|
|
def create_tempfile(path):
|
|
""" create an unopened named temporary file """
|
|
return os.path.join(tempfile.gettempdir(), path)
|
|
|
|
|
|
# contextmanager to ensure the file cleanup
|
|
@contextmanager
|
|
def ensure_clean_store(path, mode="a", complevel=None, complib=None, fletcher32=False):
|
|
|
|
try:
|
|
|
|
# put in the temporary path if we don't have one already
|
|
if not len(os.path.dirname(path)):
|
|
path = create_tempfile(path)
|
|
|
|
store = HDFStore(
|
|
path, mode=mode, complevel=complevel, complib=complib, fletcher32=False
|
|
)
|
|
yield store
|
|
finally:
|
|
safe_close(store)
|
|
if mode == "w" or mode == "a":
|
|
safe_remove(path)
|
|
|
|
|
|
@contextmanager
|
|
def ensure_clean_path(path):
|
|
"""
|
|
return essentially a named temporary file that is not opened
|
|
and deleted on exiting; if path is a list, then create and
|
|
return list of filenames
|
|
"""
|
|
try:
|
|
if isinstance(path, list):
|
|
filenames = [create_tempfile(p) for p in path]
|
|
yield filenames
|
|
else:
|
|
filenames = [create_tempfile(path)]
|
|
yield filenames[0]
|
|
finally:
|
|
for f in filenames:
|
|
safe_remove(f)
|
|
|
|
|
|
def _maybe_remove(store, key):
|
|
"""
|
|
For tests using tables, try removing the table to be sure there is
|
|
no content from previous tests using the same table name.
|
|
"""
|
|
try:
|
|
store.remove(key)
|
|
except (ValueError, KeyError):
|
|
pass
|