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Backport PR #19811 on branch v3.4.x (Fix Inkscape cleanup at exit on Windows.) #19833

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Mar 31, 2021
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Backport PR #19811 on branch v3.4.x (Fix Inkscape cleanup at exit on Windows.) #19833

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4 changes: 4 additions & 0 deletions lib/matplotlib/testing/compare.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@
import subprocess
import sys
from tempfile import TemporaryDirectory, TemporaryFile
import weakref

import numpy as np
from PIL import Image
Expand Down Expand Up @@ -170,6 +171,9 @@ def __call__(self, orig, dest):
terminator = b"\n>" if old_inkscape else b"> "
if not hasattr(self, "_tmpdir"):
self._tmpdir = TemporaryDirectory()
# On Windows, we must make sure that self._proc has terminated
# (which __del__ does) before clearing _tmpdir.
weakref.finalize(self._tmpdir, self.__del__)
if (not self._proc # First run.
or self._proc.poll() is not None): # Inkscape terminated.
env = {
Expand Down