How to count the number of letters in a string without the spaces?

Question

This is my solution resulting in an error. Returns 0

PS: I\'d still love a fix to my code :)

from collections import Counter
import          


        

Answer 1

Simply solution using the sum function:

sum(c != ' ' for c in word)

It's a memory efficient solution because it uses a generator rather than creating a temporary list and then calculating the sum of it.

It's worth to mention that c != ' ' returns True or False, which is a value of type bool, but bool is a subtype of int, so you can sum up bool values (True corresponds to 1 and False corresponds to 0)

You can check for an inheretance using the mro method:

>>> bool.mro() # Method Resolution Order
[, , ]

Here you see that bool is a subtype of int which is a subtype of object.