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flgn88
V2EX  ›  Python

Python Pandas 有没有办法只识别大写字符串“NULL”为空值,而不包括小写字符串“null”

  •  
  •   flgn88 · Jun 27, 2020 · 2405 views
    This topic created in 2285 days ago, the information mentioned may be changed or developed.

    如题。

    widewing
        1
    widewing  
       Jun 27, 2020 via Android
    df[df=='NULL']=None
    Porphet
        2
    Porphet  
       Jun 27, 2020
    我能想到的只有正则,如果你说的“NULL”是一种字符串,而且能够被正确读取到
    vinceguo
        3
    vinceguo  
       Jun 27, 2020 via Android
    很多函数有个参数是 na_values,注意看文档
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