Convert cells in dataframe with multiple values to multiple rows

Question

My data is like this:

Name    test1     test2      Count
Emp1    X,Y        A           1
Emp2    X          A,B,C       2
Emp3    Z          C           3
<         


        

Answer 1

I am just fix your code , since I do not recommend the method you unnesting the dataframe , you can check the answer here, there are multiple nice way.

df2 = df.test1.str.split(',').apply(pd.Series)
df2.index = df.set_index(['Name', 'Count']).index
df2=df2.stack().reset_index(['Name', 'Count'])
df3 = df.test2.str.split(',').apply(pd.Series)
df3.index = df.set_index(['Name', 'Count']).index
df3=df3.stack().reset_index(['Name', 'Count'])

Just do merge here

df2.merge(df3,on=['Name', 'Count'],how='outer')
Out[132]: 
   Name  Count 0_x 0_y
0  Emp1      1   X   A
1  Emp1      1   Y   A
2  Emp2      2   X   A
3  Emp2      2   X   B
4  Emp2      2   X   C
5  Emp3      3   Z   C