df-dropDuplicates-result.py

+---------+----------+-------------+-------------------+
|    brand|product_id|category_code|        category_id|
+---------+----------+-------------+-------------------+
|     null|   5847345|         null|1487580005092295511|
|     null|   5700094|         null|1487580011652186237|
|     null|   5608703|         null|1487580005553668971|
|     null|   5561084|         null|1487580005595612013|
|     null|   5683960|         null|1487580005268456287|
|     null|   5886759|         null|1487580006317032337|
|   runail|      4958|         null|1487580009471148064|
| nagaraku|   5847810|         null|1487580013522845895|
|    irisk|   5729898|         null|1487580008145748965|
|  staleks|   5899158|         null|1487580009286598681|
|  bluesky|   5804328|         null|1487580005461394279|