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⚡️ Speed up method PdfPages.infodict by 62% #234

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⚡️ Speed up method PdfPages.infodict by 62% #234

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7 changes: 5 additions & 2 deletions lib/matplotlib/backends/backend_pdf.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2709,7 +2709,7 @@ def __exit__(self, exc_type, exc_val, exc_tb):

def _ensure_file(self):
if self._file is None:
self._file = PdfFile(self._filename, metadata=self._metadata) # init.
self._file = PdfFile(self._filename, metadata=self._metadata)
return self._file

def close(self):
Expand All @@ -2733,7 +2733,10 @@ def infodict(self):
(see PDF reference section 10.2.1 'Document Information
Dictionary').
"""
return self._ensure_file().infoDict
if self._file is not None:
return self._file.infoDict
self._file = PdfFile(self._filename, metadata=self._metadata)
return self._file.infoDict

def savefig(self, figure=None, **kwargs):
"""
Expand Down