BUG: guess_datetime_format fails to read 13/2019 in dateutil==2.8.1 (#…

…49145) * ⬆️ increase minimum python-dateutil version * add 13/2019 test case Co-authored-by: MarcoGorelli <>
pandas-dev · Oct 17, 2022 · 9415ce2 · 9415ce2
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diff --git a/ci/deps/actions-38-minimum_versions.yaml b/ci/deps/actions-38-minimum_versions.yaml
@@ -16,7 +16,7 @@ dependencies:
   - boto3
 
   # required dependencies
-  - python-dateutil=2.8.1
+  - python-dateutil=2.8.2
   - numpy=1.20.3
   - pytz=2020.1
 

diff --git a/doc/source/getting_started/install.rst b/doc/source/getting_started/install.rst
@@ -236,7 +236,7 @@ Dependencies
 Package                                                          Minimum supported version
 ================================================================ ==========================
 `NumPy <https://numpy.org>`__                                    1.20.3
-`python-dateutil <https://dateutil.readthedocs.io/en/stable/>`__ 2.8.1
+`python-dateutil <https://dateutil.readthedocs.io/en/stable/>`__ 2.8.2
 `pytz <https://pypi.org/project/pytz/>`__                        2020.1
 ================================================================ ==========================
 

diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
@@ -99,6 +99,8 @@ If installed, we now require:
 +=================+=================+==========+=========+
 | mypy (dev)      | 0.981           |          |    X    |
 +-----------------+-----------------+----------+---------+
+| python-dateutil | 2.8.2           |    X     |    X    |
++-----------------+-----------------+----------+---------+
 
 For `optional libraries <https://pandas.pydata.org/docs/getting_started/install.html>`_ the general recommendation is to use the latest version.
 The following table lists the lowest version per library that is currently being tested throughout the development of pandas.

diff --git a/pandas/tests/tslibs/test_parsing.py b/pandas/tests/tslibs/test_parsing.py
@@ -214,6 +214,7 @@ def test_guess_datetime_format_with_locale_specific_formats(string, fmt):
         "1/1/1/1",
         "this_is_not_a_datetime",
         "51a",
+        "13/2019",
     ],
 )
 def test_guess_datetime_format_invalid_inputs(invalid_dt):

diff --git a/setup.cfg b/setup.cfg
@@ -33,7 +33,7 @@ packages = find:
 install_requires =
     numpy>=1.20.3; python_version<'3.10'
     numpy>=1.21.0; python_version>='3.10'
-    python-dateutil>=2.8.1
+    python-dateutil>=2.8.2
     pytz>=2020.1
 python_requires = >=3.8
 include_package_data = True