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gh-140790: pdb: Initialize instance variables in Pdb.__init__ by Carreau · Pull Request #140791 · python/cpython · GitHub

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gh-140790: pdb: Initialize instance variables in Pdb.__init__ #140791

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Merged
gaogaotiantian merged 4 commits into from
Nov 14, 2025
Conversation 6 Commits 4 Checks 48 Files changed
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gh-140790: pdb: Initialize instance variables in Pdb.__init__ #140791

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26aac76
gh-140790: pdb: Initialize instance variables in Pdb.__init__
Carreau Oct 30, 2025
87bd79f
📜🤖 Added by blurb_it.
blurb-it[bot] Oct 30, 2025
446b50b
remove currentbp that should be set in Bdb
Carreau Oct 31, 2025
3cf4fc6
Update Lib/pdb.py
Carreau Oct 31, 2025
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10 changes: 8 additions & 2 deletions Lib/pdb.py
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Original file line number Diff line number Diff line change
Expand Up @@ -398,6 +398,12 @@ def __init__(self, completekey='tab', stdin=None, stdout=None, skip=None,

self._current_task = None

self.lineno = None
self.stack = []
self.curindex = 0
self.curframe = None
self._user_requested_quit = False

def set_trace(self, frame=None, *, commands=None):
Pdb._last_pdb_instance = self
if frame is None:
Expand Down Expand Up @@ -474,7 +480,7 @@ def forget(self):
self.lineno = None
self.stack = []
self.curindex = 0
if hasattr(self, 'curframe') and self.curframe:
if self.curframe:
self.curframe.f_globals.pop('__pdb_convenience_variables', None)
self.curframe = None
self.tb_lineno.clear()
Expand Down Expand Up @@ -1493,7 +1499,7 @@ def checkline(self, filename, lineno, module_globals=None):
"""
# this method should be callable before starting debugging, so default
# to "no globals" if there is no current frame
frame = getattr(self, 'curframe', None)
frame = self.curframe
if module_globals is None:
module_globals = frame.f_globals if frame else None
line = linecache.getline(filename, lineno, module_globals)
Expand Down
1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Library/2025-10-30-12-36-19.gh-issue-140790._3T6-N.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Initialize all Pdb's instance variables in ``__init__``, remove some hasattr/getattr
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