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Fix xkcd() not resetting context anymore.#9603

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Merged
Kojoley merged 1 commit intomatplotlib:masterfromanntzer:xkcd
Oct 28, 2017
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56 changes: 33 additions & 23 deletionslib/matplotlib/pyplot.py
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Original file line numberDiff line numberDiff line change
Expand Up@@ -21,9 +21,9 @@
import six

import sys
import warnings
import time
import types
import warnings

from cycler import cycler
import matplotlib
Expand DownExpand Up@@ -389,28 +389,38 @@ def xkcd(scale=1, length=100, randomness=2):
"xkcd mode is not compatible with text.usetex = True")

from matplotlib import patheffects
context = rc_context()
try:
rcParams['font.family'] = ['xkcd', 'Humor Sans', 'Comic Sans MS']
rcParams['font.size'] = 14.0
rcParams['path.sketch'] = (scale, length, randomness)
rcParams['path.effects'] = [
patheffects.withStroke(linewidth=4, foreground="w")]
rcParams['axes.linewidth'] = 1.5
rcParams['lines.linewidth'] = 2.0
rcParams['figure.facecolor'] = 'white'
rcParams['grid.linewidth'] = 0.0
rcParams['axes.grid'] = False
rcParams['axes.unicode_minus'] = False
rcParams['axes.edgecolor'] = 'black'
rcParams['xtick.major.size'] = 8
rcParams['xtick.major.width'] = 3
rcParams['ytick.major.size'] = 8
rcParams['ytick.major.width'] = 3
except:
context.__exit__(*sys.exc_info())
raise
return context
xkcd_ctx = rc_context({
'font.family': ['xkcd', 'Humor Sans', 'Comic Sans MS'],
'font.size': 14.0,
'path.sketch': (scale, length, randomness),
'path.effects': [patheffects.withStroke(linewidth=4, foreground="w")],
'axes.linewidth': 1.5,
'lines.linewidth': 2.0,
'figure.facecolor': 'white',
'grid.linewidth': 0.0,
'axes.grid': False,
'axes.unicode_minus': False,
'axes.edgecolor': 'black',
'xtick.major.size': 8,
'xtick.major.width': 3,
'ytick.major.size': 8,
'ytick.major.width': 3,
})
xkcd_ctx.__enter__()

# In order to make the call to `xkcd` that does not use a context manager
# (cm) work, we need to enter into the cm ourselves, and return a dummy
# cm that does nothing on entry and cleans up the xkcd context on exit.
# Additionally, we need to keep a reference to the dummy cm because it
# would otherwise be exited when GC'd.

class dummy_ctx(object):
def __enter__(self):
pass

__exit__ = xkcd_ctx.__exit__

return dummy_ctx()


## Figures ##
Expand Down
15 changes: 14 additions & 1 deletionlib/matplotlib/tests/test_style.py
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Original file line numberDiff line numberDiff line change
Expand Up@@ -11,7 +11,7 @@
import pytest

import matplotlib as mpl
from matplotlib import style
from matplotlib importpyplot as plt,style
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Just out of curiosity, is this import style "ok"?

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Yeah, doingimport sys, os is what is discouraged.

In that case that you are importing mulitple top level things is obscured, in this case we are importing multiple things from the same namespace (and renaming one).https://www.python.org/dev/peps/pep-0008/#imports

from matplotlib.style.core import USER_LIBRARY_PATHS, STYLE_EXTENSION

import six
Expand DownExpand Up@@ -158,3 +158,16 @@ def test_alias(equiv_styles):
rc_base = rc_dicts[0]
for nm, rc in zip(equiv_styles[1:], rc_dicts[1:]):
assert rc_base == rc


def test_xkcd_no_cm():
assert mpl.rcParams["path.sketch"] is None
plt.xkcd()
assert mpl.rcParams["path.sketch"] == (1, 100, 2)


def test_xkcd_cm():
assert mpl.rcParams["path.sketch"] is None
with plt.xkcd():
assert mpl.rcParams["path.sketch"] == (1, 100, 2)
assert mpl.rcParams["path.sketch"] is None
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