1. 从字典创建Dataframe
>>> import pandas as pd
>>> dict1 = {'col1':[1,2,5,7],'col2':['a','b','c','d']}
>>> df = pd.DataFrame(dict1)
>>> df
  col1 col2
0   1  a
1   2  b
2   5  c
3   7  d
2. 从列表创建Dataframe (先把列表转化为字典,再把字典转化为DataFrame)
>>> lista = [1,2,5,7]
>>> listb = ['a','b','c','d']
>>> df = pd.Data
                                    
                                    
                                        
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