81 lines
2.9 KiB
Python
81 lines
2.9 KiB
Python
"""
|
|
Sebastian Raschka 2014-2017
|
|
Python Progress Indicator Utility
|
|
|
|
Author: Sebastian Raschka <sebastianraschka.com>
|
|
License: BSD 3 clause
|
|
|
|
Contributors: https://github.com/rasbt/pyprind/graphs/contributors
|
|
Code Repository: https://github.com/rasbt/pyprind
|
|
PyPI: https://pypi.python.org/pypi/PyPrind
|
|
"""
|
|
|
|
from .prog_class import Prog
|
|
import time
|
|
|
|
|
|
class ProgPercent(Prog):
|
|
"""
|
|
Initializes a progress bar object that allows visuzalization
|
|
of an iterational computation in the standard output screen.
|
|
|
|
Parameters
|
|
----------
|
|
iterations : `int`
|
|
Number of iterations for the iterative computation.
|
|
track_time : `bool` (default: `True`)
|
|
Prints elapsed time when loop has finished.
|
|
stream : `int` (default: 2).
|
|
Setting the output stream.
|
|
Takes `1` for stdout, `2` for stderr, or a custom stream object
|
|
title : `str` (default: `''`).
|
|
Setting a title for the percentage indicator.
|
|
monitor : `bool` (default: `False`)
|
|
Monitors CPU and memory usage if `True` (requires `psutil` package).
|
|
update_interval : float or int (default: `None`)
|
|
The update_interval in seconds controls how often the progress
|
|
is flushed to the screen.
|
|
Automatic mode if `update_interval=None`.
|
|
|
|
"""
|
|
def __init__(self, iterations, track_time=True,
|
|
stream=2, title='', monitor=False, update_interval=None):
|
|
Prog.__init__(self, iterations, track_time, stream,
|
|
title, monitor, update_interval)
|
|
self.last_progress = 0
|
|
self._print()
|
|
if monitor:
|
|
try:
|
|
self.process.cpu_percent()
|
|
self.process.memory_percent()
|
|
except AttributeError: # old version of psutil
|
|
self.process.get_cpu_percent()
|
|
self.process.get_memory_percent()
|
|
|
|
def _cache_percent_indicator(self, last_progress):
|
|
self._cached_output += '[%3d %%]' % (last_progress)
|
|
|
|
def _print(self, force_flush=False):
|
|
""" Prints formatted percentage and tracked time to the screen."""
|
|
self._stream_flush()
|
|
next_perc = self._calc_percent()
|
|
if self.update_interval:
|
|
do_update = time.time() - self.last_time >= self.update_interval
|
|
elif force_flush:
|
|
do_update = True
|
|
else:
|
|
do_update = next_perc > self.last_progress
|
|
|
|
if do_update and self.active:
|
|
self.last_progress = next_perc
|
|
self._cache_percent_indicator(self.last_progress)
|
|
if self.track:
|
|
self._cached_output += ' Time elapsed: ' + \
|
|
self._get_time(self._elapsed())
|
|
self._cache_eta()
|
|
if self.item_id:
|
|
self._cache_item_id()
|
|
self._stream_out('\r%s' % self._cached_output)
|
|
self._stream_flush()
|
|
self._cached_output = ''
|