Breaking down a column in Pandas into a separate CSV for display in Tableau
If you don't need other columns, here is a solution. It splits the column, stacks in vertically and combines with "permalink" column

df.set_index('permalink').category_list.str.split('|', expand=True).stack().reset_index('permalink').rename(columns={0:'category'})

permalink   category
0   /organization/-qounter  Application Platforms
1   /organization/-qounter  Real Time
2   /organization/-qounter  Social Network Media
0   /organization/-the-one-of-them-inc- Apps
1   /organization/-the-one-of-them-inc- Games
2   /organization/-the-one-of-them-inc- Mobile
0   /organization/1-4-all   Entertainment
1   /organization/1-4-all   Games
2   /organization/1-4-all   Software
0   /organization/1-800-publicrelations-inc-    Internet
1   /organization/1-800-publicrelations-inc-    Marketing
2   /organization/1-800-publicrelations-inc-    Media
3   /organization/1-800-publicrelations-inc-    Public Relations
0   /organization/1-mainstream  Apps
1   /organization/1-mainstream  Cable
2   /organization/1-mainstream  Distribution
3   /organization/1-mainstream  Software


Then you can save it to csv.