Ben Chuanlong Du's Blog

It is never too late to learn.

Hands on the datetime Module in Python

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A Datetime object cannot be compared with a string directly. However, pandas Series of datetime objects can be compared with string date directly (both by operators and methods). The comparison is done by parsing the string to a datetime object. An exception will be thrown if the string cannot be parsed into a datetime object.

Date and Time in Python pandas

Date/time utilities in the pandas module are more flexible/powerful than that in the datetime module. It is suggested that you use date/time utilities in the pandas module when you use DataFrame/Series in the pandas module.

  1. pandas.to_datetime works on an iterable object, handles missing values and nano seconds.

  2. pandas.Series.dt.strftime

Tips on PySimpleGUI

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

http://www.blog.pythonlibrary.org/2019/10/23/a-brief-intro-to-pysimplegui/

https://pysimplegui.readthedocs.io/en/latest/

Issues in pip and Solutions

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

The issue is due to to pyopenssl using old dependencies. It can be fixed by removing the Python package cryptography package and then upgrading …