4.5 Strings and iterations

Another way to access the characters in a string is to iterate across it with a for loop.

characters = []

for c in "Fender":
    characters.append(c)

characters

['F', 'e', 'n', 'd', 'e', 'r']

guitars

'Fender Gibson Taylor'

for c in guitars:
    if c.isupper():
        print(c)

F
G
T

While we cannot do a string comprehension in Python, we can create a list of strings and join them together.

"".join([c for c
    in "OX63 5WC - SL46 3AP - BN96 0VU"
    if c.isdigit()])

'635463960'

Strings can participate in parallel traverse via zip with lists and other collections that support iteration.

for a, b in zip("123", [1, 2, 3]):
    print(f"{a = }   {b = }")

a = '1'   b = 1
a = '2'   b = 2
a = '3...