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"""
Matplotlib GUI progressbar decorator for iterators.
Usage:
>>> from tqdm.gui import trange, tqdm
>>> for i in trange(10):
... ...
"""
# future division is important to divide integers and get as
# a result precise floating numbers (instead of truncated int)
import re
from warnings import warn
# to inherit from the tqdm class
from .std import TqdmExperimentalWarning
from .std import tqdm as std_tqdm
# import compatibility functions and utilities
__author__ = {"github.com/": ["casperdcl", "lrq3000"]}
__all__ = ['tqdm_gui', 'tgrange', 'tqdm', 'trange']
class tqdm_gui(std_tqdm): # pragma: no cover
"""Experimental Matplotlib GUI version of tqdm!"""
# TODO: @classmethod: write() on GUI?
def __init__(self, *args, **kwargs):
from collections import deque
import matplotlib as mpl
import matplotlib.pyplot as plt
kwargs = kwargs.copy()
kwargs['gui'] = True
colour = kwargs.pop('colour', 'g')
super(tqdm_gui, self).__init__(*args, **kwargs)
if self.disable:
return
warn("GUI is experimental/alpha", TqdmExperimentalWarning, stacklevel=2)
self.mpl = mpl
self.plt = plt
# Remember if external environment uses toolbars
self.toolbar = self.mpl.rcParams['toolbar']
self.mpl.rcParams['toolbar'] = 'None'
self.mininterval = max(self.mininterval, 0.5)
self.fig, ax = plt.subplots(figsize=(9, 2.2))
# self.fig.subplots_adjust(bottom=0.2)
total = self.__len__() # avoids TypeError on None #971
if total is not None:
self.xdata = []
self.ydata = []
self.zdata = []
else:
self.xdata = deque([])
self.ydata = deque([])
self.zdata = deque([])
self.line1, = ax.plot(self.xdata, self.ydata, color='b')
self.line2, = ax.plot(self.xdata, self.zdata, color='k')
ax.set_ylim(0, 0.001)
if total is not None:
ax.set_xlim(0, 100)
ax.set_xlabel("percent")
self.fig.legend((self.line1, self.line2), ("cur", "est"),
loc='center right')
# progressbar
self.hspan = plt.axhspan(0, 0.001, xmin=0, xmax=0, color=colour)
else:
# ax.set_xlim(-60, 0)
ax.set_xlim(0, 60)
ax.invert_xaxis()
ax.set_xlabel("seconds")
ax.legend(("cur", "est"), loc='lower left')
ax.grid()
# ax.set_xlabel('seconds')
ax.set_ylabel((self.unit if self.unit else "it") + "/s")
if self.unit_scale:
plt.ticklabel_format(style='sci', axis='y', scilimits=(0, 0))
ax.yaxis.get_offset_text().set_x(-0.15)
# Remember if external environment is interactive
self.wasion = plt.isinteractive()
plt.ion()
self.ax = ax
def close(self):
if self.disable:
return
self.disable = True
with self.get_lock():
self._instances.remove(self)
# Restore toolbars
self.mpl.rcParams['toolbar'] = self.toolbar
# Return to non-interactive mode
if not self.wasion:
self.plt.ioff()
if self.leave:
self.display()
else:
self.plt.close(self.fig)
def clear(self, *_, **__):
pass
def display(self, *_, **__):
n = self.n
cur_t = self._time()
elapsed = cur_t - self.start_t
delta_it = n - self.last_print_n
delta_t = cur_t - self.last_print_t
# Inline due to multiple calls
total = self.total
xdata = self.xdata
ydata = self.ydata
zdata = self.zdata
ax = self.ax
line1 = self.line1
line2 = self.line2
# instantaneous rate
y = delta_it / delta_t
# overall rate
z = n / elapsed
# update line data
xdata.append(n * 100.0 / total if total else cur_t)
ydata.append(y)
zdata.append(z)
# Discard old values
# xmin, xmax = ax.get_xlim()
# if (not total) and elapsed > xmin * 1.1:
if (not total) and elapsed > 66:
xdata.popleft()
ydata.popleft()
zdata.popleft()
ymin, ymax = ax.get_ylim()
if y > ymax or z > ymax:
ymax = 1.1 * y
ax.set_ylim(ymin, ymax)
ax.figure.canvas.draw()
if total:
line1.set_data(xdata, ydata)
line2.set_data(xdata, zdata)
try:
poly_lims = self.hspan.get_xy()
except AttributeError:
self.hspan = self.plt.axhspan(0, 0.001, xmin=0, xmax=0, color='g')
poly_lims = self.hspan.get_xy()
poly_lims[0, 1] = ymin
poly_lims[1, 1] = ymax
poly_lims[2] = [n / total, ymax]
poly_lims[3] = [poly_lims[2, 0], ymin]
if len(poly_lims) > 4:
poly_lims[4, 1] = ymin
self.hspan.set_xy(poly_lims)
else:
t_ago = [cur_t - i for i in xdata]
line1.set_data(t_ago, ydata)
line2.set_data(t_ago, zdata)
d = self.format_dict
# remove {bar}
d['bar_format'] = (d['bar_format'] or "{l_bar}<bar/>{r_bar}").replace(
"{bar}", "<bar/>")
msg = self.format_meter(**d)
if '<bar/>' in msg:
msg = "".join(re.split(r'\|?<bar/>\|?', msg, maxsplit=1))
ax.set_title(msg, fontname="DejaVu Sans Mono", fontsize=11)
self.plt.pause(1e-9)
def tgrange(*args, **kwargs):
"""Shortcut for `tqdm.gui.tqdm(range(*args), **kwargs)`."""
return tqdm_gui(range(*args), **kwargs)
# Aliases
tqdm = tqdm_gui
trange = tgrange
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