How to count the number of capital letters in a file?

Your code should work even if the file is too big to fit in memory. ______

We need to write a multiple line solution and then convert it to one liner code.

Example:

with open(SOME_LARGE_FILE) as fh:
count = 0
text = fh.read()
for character in text:
    if character.isupper():
count += 1

We will now try to transform this into a single line:

count sum(1 for line in fh for character in line if character.isupper())

Reference

Example