Passing function arguments to another function pandas python

Question

Dataframe df

  cust_id   order_date    
    1       2015-01-16      
    1       2019-12-03      
    2       2014-12-21      
    2       2015-01-10      
    1       2015-01-10
    3       2018-01-18
    3       2017-03-04
    4       2019-11-05
    4       2010-01-01
    3       2019-12-06
    3       2002-01-01
    3       2018-01-01

Active function will find out customers who have transacted in the past one month and have bought at least 3 times from a site.

 def active(month_before_current_month, freq):
         df['Frequency'] = df.groupby('cust_id')['order_date'].nunique()
         df = df.groupby('customer_id')['order_date'].max().loc[lambda x:x>= 
         (datetime.date.today() - 

          datetime.timedelta(month_before_current_month*365/12))].loc[lambda 
            x: 
             x['Frequency']>=3].reset_index().rename(columns= 
            {'order_date':'Most_recent_date'})
         return df

Output of active(1,3) function will be:(people who have bought 1 month before and have made at least 3 transactions till date)

    cust_id   Most_recent_date Frequency
     1         2019-12-03        3
     3          2019-12-06       5

Now I want to create another function which uses the function active to see after how much time we should send out fliers or marketing ads etc to these customers.

   def active_target(month_before_current_month, freq):
      df=active(month_before_current_month,freq)
      return df['Frequency'].mean()

This works fine. However I would like to pass the arguments active function itself.

When I do this:

       def active_target(**kwargs):
           df=active(month_before_current_month,freq)
           return df['Frequency'].mean()

Calling active_target

      active_target(active(1,freq))
          **I am getting error TypeError: active_target() takes 0 positional 
          arguments but 1 was given**

Can anyone help:

Pls check. active function is given. I have edited. had made typo error — noob, Dec 30 '19 at 11:07
Since you have already specified `active` inside, try calling `active_target(month_before_current_month,freq)`, python will look for `active` in the global scope. — YOLO, Dec 30 '19 at 11:12
1. You're not passing a function object, you're passing the result of a function call. 2. You're not using `kwargs` anywhere... — Andras Deak -- Слава Україні, Dec 30 '19 at 11:13
TypeError: active_target() takes 0 positional arguments but 2 were given for active(1,freq) — noob, Dec 30 '19 at 11:13
Depends on what you want to do. You can do e.g. `def active_target(fun, args)` and inside `fun(*args)`, so that you call it with `active_target(active, args=(1, freq))`. Read the linked duplicates for inspiration. — Andras Deak -- Слава Україні, Dec 30 '19 at 11:16
Looking at your question again you just need `def active_target(active_fun, month_before_current_month, freq):`, inside it `df = active_fun(month_before_etc, freq)`, and call it as `active_target(active, 1, freq)`. — Andras Deak -- Слава Україні, Dec 30 '19 at 11:21
My code worked by calling active_target(active)......active_target was defined as def active_target(active): df=active(m,freq) return df — noob, Dec 30 '19 at 12:15

Passing function arguments to another function pandas python

0 Answers0