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  • 筛选出dataframe中全为数字的列的值

    
    In [1]: import pandas as pd
    
    In [2]: import numpy as np
    
    In [3]: students = [ ('jack', 'Apples' , 34) ,
       ...:              ('Riti', 'Mangos'  , 31) ,
       ...:              ('Aadi', 'Grapes' , 30) ,
       ...:              ('Sonia', 'Apples', 32) ,
       ...:              ('Lucy', 'Mangos'  , 33) ,
       ...:              ('Mike', 'Apples' , 35)
       ...:               ]
    
    In [4]: #Create a DataFrame object
       ...: dfObj = pd.DataFrame(students, columns = ['Name' , 'Product', 'Sale'])
    
    In [5]: condition = dfObj.apply(lambda s: pd.to_numeric(s, errors='coerce').notn
       ...: ull().all()).to_dict()
    
    In [6]: dfObj[[k for k,v in condition.items() if v]]
    Out[6]:
       Sale
    0    34
    1    31
    2    30
    3    32
    4    33
    5    35
    
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  • 原文地址:https://www.cnblogs.com/everfight/p/select_all_number_columns.html
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