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V2EX  ›  Python

pandas 这种直接把 列名 就映射为 属性 是如何做到的

  •  
  •   fearme · Aug 21, 2017 · 2976 views
    This topic created in 3207 days ago, the information mentioned may be changed or developed.
    import pandas as pd
    
    df = pd.DataFrame(columns=['date'])
    
    print(df.date)
    
    2 replies    2017-08-21 17:27:57 +08:00
    ipwx
        1
    ipwx  
       Aug 21, 2017
    __getitem__
    ipwx
        2
    ipwx  
       Aug 21, 2017   ❤️ 1
    抱歉,__getitem__ 和 __getattr__,分别是实现 [] 访问和 . 访问
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