1. 模拟数据

In [1]: import pandas as pdIn [2]: import numpy as npIn [3]: company=["A","B","C"]...: ...: data=pd.DataFrame({...:     "company":[company[x] for x in np.random.randint(0,len(company),10)],...:     "salary":np.random.randint(5,50,10),...:     "age":np.random.randint(15,50,10)...: 	}...: )In [4]: company
Out[4]: ['A', 'B', 'C']In [5]: data
Out[5]: company  salary  age
0       C      45   18
1       B      43   33
2       A      19   21
3       B      39   21
4       A      49   28
5       A      14

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