import pandas as pd
my_data = {'ab' : pd.Series([1, 8, 7], index=['a', 'b', 'c']),
'cd' : pd.Series([1, 2, 0, 9], index=['a', 'b', 'c', 'd']),
'ef' : pd.Series([56, 78, 32],index=['a','b','c']),
'gh' : pd.Series([66, 77, 88, 99],index=['a','b','c', 'd']) }
my_df = pd.DataFrame(my_data)
print("数据帧是:")
print(my_df)
print("使用'del'运算符删除列")
del my_df['cd']
print(my_df)

数据帧是：
   ab   cd  ef    gh
a  1.0  1   56.0  66
b  8.0  2   78.0  77
c  7.0  0   32.0  88
d  NaN  9   NaN   99
使用“del”运算符删除列
    ab  ef     gh
a  1.0  56.0   66
b  8.0  78.0   77
c  7.0  32.0   88
d  NaN  NaN   99