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Commit41bf7cc

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FIX: be careful about communicating with subprocess
On windows on py312 we can not use `.communicate` during process shutdownbecause it internally uses Python threads which can no longer be created duringinterpreter shutdown.Closes#27437
1 parent1defb57 commit41bf7cc

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‎lib/matplotlib/backends/backend_pgf.py

Lines changed: 6 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -257,7 +257,8 @@ def _setup_latex_process(self, *, expect_reply=True):
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# Open LaTeX process for real work; register it for deletion. On
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# Windows, we must ensure that the subprocess has quit before being
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# able to delete the tmpdir in which it runs; in order to do so, we
260-
# must first `kill()` it, and then `communicate()` with it.
260+
# must first `kill()` it, and then `communicate()` with or `wait()` on
261+
# it.
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try:
262263
self.latex=subprocess.Popen(
263264
[mpl.rcParams["pgf.texsystem"],"-halt-on-error"],
@@ -274,7 +275,10 @@ def _setup_latex_process(self, *, expect_reply=True):
274275

275276
deffinalize_latex(latex):
276277
latex.kill()
277-
latex.communicate()
278+
try:
279+
latex.communicate()
280+
exceptRuntimeError:
281+
latex.wait()
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279283
self._finalize_latex=weakref.finalize(
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self,finalize_latex,self.latex)

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