Exercise: Count total number of characters of dictionary keys

Loop through the keys of the capitals dictionary and calculate their total number of characters. Increment the variable num_char by the length of each key in every iteration.

capitals = {
  'USA': 'Washington D.C.',
  'France': 'Paris',
  'Brazil': 'Brasília',
  'Peru': 'Lima'
}
 
num_char = 0
 
# iterate over keys here...

for

 
print(num_char)
# expected: 19

Python

Setting up Python environment...

Output