Polars 速度快、语法现代、表达力强，但很多人刚上手就把它当 Pandas 用，结果性能优势全都浪费了。下面是新手最容易犯的 10 个错误，以及对应的解决思路。1、直接 read_csv而不用 scan_*新手拿到一个大 CSV，上来就这么写： ...

pandas is the premier library for data analysis in Python. Here are some advanced things I like to do with pandas DataFrames to take my analysis to the next level. Change the index of a DataFrame On a ...

In the world of data management, efficiency is king. That applies to businesses, but it also applies to educators and data analysts. Messy data can make everything harder. And while Google Sheets ...