Need help!

[Larz60+]

counts = [0] * 11

# for testing use following
user_data = 'hjhjhu755399952210887340123456789'
# user_data = user_data=input('Enter string of numbers and characters: ')

for x in user_data:
    if x.isdigit():
        idx = int(x)
        counts[idx] += 1
    else:
        counts[10] += 1
print(counts)

result:

Output:
[2, 2, 3, 3, 2, 4, 1, 3, 3, 4, 6]

create comment on current user_data and remove on input to input data.
you can simplify more with list comprehension