Shulou(Shulou.com)06/01 Report--

This article mainly introduces the Pandas nan, extract, round how to use, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

Three common questions about Python data analysis will be summarized, which are:

Nan equality comparison problem

Pandas is extracted by column extract and regular

The riddle of round rounding

For the convenience of the demonstration, I use tex typesetting, and the usage data and pdf download are provided at the end of the article.

Page 1 of pdf:

Put forward the problem of nan equality comparison.

Using extract regular extraction, you can achieve more complex regular expression extraction, which is very useful.

Round rounding questions:

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