Function to count words in a list up to and including Sam

[Oldman45]

Note that, if "Sam" is not in the list, you get the length of the list as result.
This, however, gives "None" if "Sam" is missing:

def count_to_sam(samlist):
    if "Sam" not in samlist:
        return None
    else:
        return samlist.index("Sam") + 1

lst = ["able","been","state","Sam","beer"]
print(count_to_sam(lst))
another_list = ["able","been","state","Tom","beer"]
print(count_to_sam(another_list))

Output:
4
None

Hello Serafim
Thanks for the update, much appreciated and I will study this along with other information that I have received. Thanks again