python value exists in list code example
Example 1: how to check if value is in list python
>>> letters = [a,b,c,d,e]
>>> 'a' in letters:
True
Example 2: python find if element in list
element_you_want_to_find in list_in_you_want_to_search
Note: Don't forget to substitute both of that variables with the variables you want
Conclusion: Use the in operator