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BUG: Error "no attribute 'total_seconds'" with tzlocal >= 3.0 #43516

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@lgautier

Description

@lgautier

  • I have checked that this issue has not already been reported.

  • I have confirmed this bug exists on the latest version of pandas.

  • I have confirmed this bug exists on the master branch of pandas.

Reproducible Example

import backports.zoneinfo
import datetime
import pandas

res = pandas.to_datetime(
    (datetime.datetime(
        1960, 5, 2, 0, 0,
        tzinfo=backports.zoneinfo.ZoneInfo(key='America/New_York')),
    ),
    errors='coerce')

repr(res)

Issue Description

pandas.to_datetime allows the creation of objects with a broken method __repr__(). The code example above triggers

AttributeError: 'NoneType' object has no attribute 'total_seconds'

The issue was discovered when investigating this: rpy2/rpy2#823 (comment)

Expected Behavior

Completion of repr() and a string return instead of an exception raised.

Installed Versions

INSTALLED VERSIONS

commit : 5f648bf
python : 3.8.10.final.0
python-bits : 64
OS : Linux
OS-release : 5.11.0-27-generic
Version : #29~20.04.1-Ubuntu SMP Wed Aug 11 15:58:17 UTC 2021
machine : x86_64
processor : x86_64
byteorder : little
LC_ALL : None
LANG : en_US.UTF-8
LOCALE : en_US.UTF-8

pandas : 1.3.2
numpy : 1.19.5
pytz : 2020.1
dateutil : 2.8.1
pip : 20.0.2
setuptools : 44.0.0
Cython : 0.29.21
pytest : 6.2.4
hypothesis : None
sphinx : 4.1.2
blosc : None
feather : None
xlsxwriter : None
lxml.etree : None
html5lib : None
pymysql : None
psycopg2 : None
jinja2 : 2.11.2
IPython : 7.26.0
pandas_datareader: None
bs4 : None
bottleneck : None
fsspec : None
fastparquet : None
gcsfs : None
matplotlib : 3.3.2
numexpr : None
odfpy : None
openpyxl : None
pandas_gbq : None
pyarrow : 4.0.1
pyxlsb : None
s3fs : None
scipy : 1.5.2
sqlalchemy : None
tables : None
tabulate : None
xarray : None
xlrd : None
xlwt : None
numba : None

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    BugCompatpandas objects compatability with Numpy or Python functionsOutput-Formatting__repr__ of pandas objects, to_stringTimezonesTimezone data dtype

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