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[3.14] gh-65697: Improved error msg for configparser key validation (GH-135527) (#135541)

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gh-65697: Improved error msg for configparser key validation (GH-135527)

* Improved error msg for configparser key validation and added note in 3.14 whatsnew

* Properly added change to configparser

* 📜🤖 Added by blurb_it.

---------
(cherry picked from commit 81237fbcf6)

Co-authored-by: Jacob Austin Lincoln <99031153+lincolnj1@users.noreply.github.com>
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
This commit is contained in:
Miss Islington (bot) 2025-06-15 18:38:15 +02:00 • committed by GitHub
parent ee141f0277
commit 6ae54553d4
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3 changed files with 16 additions and 4 deletions
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11
Lib/configparser.py
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@ -1218,11 +1218,14 @@ class RawConfigParser(MutableMapping):
def _validate_key_contents(self, key):
"""Raises an InvalidWriteError for any keys containing
delimiters or that match the section header pattern"""
delimiters or that begins with the section header pattern"""
if re.match(self.SECTCRE, key):
raise InvalidWriteError("Cannot write keys matching section pattern")
if any(delim in key for delim in self._delimiters):
raise InvalidWriteError("Cannot write key that contains delimiters")
raise InvalidWriteError(
f"Cannot write key {key}; begins with section pattern")
for delim in self._delimiters:
if delim in key:
raise InvalidWriteError(
f"Cannot write key {key}; contains delimiter {delim}")
def _validate_value_types(self, *, section="", option="", value=""):
"""Raises a TypeError for illegal non-string values.