users has columns user_id and company. actions has columns
user_id, action_name, num_actions and action_date (datetime).
For the users belonging to company, total their num_actions for the action
named "CompleteTask" within the given month (a string like "2022-01").
Return a DataFrame with columns user_id and completed covering every
user at that company, including those with no matching actions, who score 0.
Sort by user_id and renumber the index from 0.
Input
users =
user_id company
0 1 ClassPass
1 2 ClassPass
2 3 Other
actions =
user_id action_name num_actions action_date
0 1 CompleteTask 2 2022-01-05
1 1 CompleteTask 3 2022-02-05
2 2 ViewPage 9 2022-01-06
3 3 CompleteTask 7 2022-01-07
company = 'ClassPass'
month = '2022-01'
Output
user_id completed
0 1 2
1 2 0