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snowsie
V2EX  ›  Python

想请教一下 pandas 的小问题

  •  
  •   snowsie · Mar 26, 2016 · 2205 views
    This topic created in 3727 days ago, the information mentioned may be changed or developed.
    怎么将某列空的行全部变为 1
    如: df=pd.DataFrame({"a":[1,2,3,"","",4]})
    loggerhead
        1
    loggerhead  
       Mar 26, 2016 via iPhone
    df.a[df.a.isnull()] = 1

    麻烦自己看文档或者 google
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