pandas拆分单行数据到多行。

df = pd.DataFrame({'型号':['212027'],'颜色':['蓝,粉,黄'],
                   '尺码': ['12-18M,2-3Y,3-4Y']})

要拆分数据到扩展到多行,如下图：

实现代码：

# -*- coding: utf-8 -*-
"""
Created on Mon Dec 24 19:27:35 2018

@author: Fanxiaolei
"""
import pandas as pd
df = pd.DataFrame({'型号':['212027'],'颜色':['蓝,粉,黄'],
                   '尺码': ['12-18M,2-3Y,3-4Y']})
s=['颜色','尺码']
df1=df.drop(columns=s,axis=1)
for x in s:
    df1=df1.join(df[x].str.split(',',expand=True).stack().reset_index(level=1,drop=True).rename(x))
df1=df1.reset_index(drop=True)
print(df1)