设置dataframe的索引列

输入：一个dataframe

输出：设置了索引列的dataframe

代码：

import pandas as pd
data = {
    "姓名": ["小张","小王","小李","小赵"],
    "性别": ["男","女","男","女"],
    "年龄": [18,19,20,18]
}
df = pd.DataFrame(data)
print(df)
#设置新的索引列
df.set_index("姓名",inplace=True)
print(df)

结果