CODEWITHSUNDEEP
pythonfunctionmodulestate
Ida
Ida

Reputation: 2999

Python: remember module function call values

I want to run a third-party python program thirdparty.py the way I want. I CANNOT change the code of thirdparty.py directly, so I change the external module used by thirdparty.py. The code of thirdparty.py is like:

import module_a

def somefunc():
    ...
    module_a.add(value)

So I create my own module_a.py and rewrite its add(value) function:

# module_a.py created by me

def add(value):
    # code written by me
    do_something()

Now my problem is, how can I remember the value everytime module_a.add(value) is invoked by thirdparty.py?

My current workaround is to write the value back to an external file in do_something(). However, I don't want any external file and I/O involved. Also, I can neither use a class in module_a.py to maintain the states, nor change the signature of add(value), otherwise module_a.add(value) in thirdparty.py won't work.

Ideally I want to write another class to interact with module_a.py and remember the value passed to add(value) everytime, but how to do this?

Upvotes: 1

Views: 1304

Answers (1)

Jeremy Kemball
Jeremy Kemball

Reputation: 1275

The solution to your question as asked is here. You can set internal variables for python functions like so: 

def add(value):
    # code written by me
    add.state = add.state+1 
    do_something()
add.state = 0

Upvotes: 1

Related Questions