python_pandas

1. 行标签——index
2. 列——columns
3. 建立dataframe

import pandas as pd
data=[['mark',55,'Italy',4.5,'Europe'],
      ['John',33,'China',3.8,'Asian']]
df=pd.DataFrame(data=data,columns=['age','name','country','score','continent'],
                index=[1001,1002])

4. 给索引取名

df.index.name='user'

5. 还原成普通的列

print(df.reset_index())

6. 设置新的索引

print(df.reset_index().set_index('country'))