change a list of strings to a value df code example

Example 1: data frame list value change to string

df['liststring'] = df['lists'].agg(lambda x: ','.join(map(str, x)))

Example 2: data frame list value change to string

df['liststring'] = [','.join(map(str, l)) for l in df['lists']]
df

                lists    liststring
0  [1, 2, 12, 6, ABC]  1,2,12,6,ABC
1     [1000, 4, z, a]    1000,4,z,a