iframe-proxy | Sunbelt Computer Software

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"""

This algorithm helps you to swap cases.

User will give input and then program will perform swap cases.

In other words, convert all lowercase letters to uppercase letters and vice versa.

For example:

1. Please input sentence: Algorithm.Python@89

aLGORITHM.pYTHON@89

2. Please input sentence: github.com/mayur200

GITHUB.COM/MAYUR200

"""

import re

# This re.compile() function saves the pattern from 'a' to 'z' and 'A' to 'Z'

# into 'regexp' variable

regexp = re.compile("[^a-zA-Z]+")

def swap_case(sentence):

"""

This function will convert all lowercase letters to uppercase letters

and vice versa.

>>> swap_case('Algorithm.Python@89')

'aLGORITHM.pYTHON@89'

"""

new_string = ""

for char in sentence:

if char.isupper():

new_string += char.lower()

if char.islower():

new_string += char.upper()

if regexp.search(char):

new_string += char

return new_string

if __name__ == "__main__":

print(swap_case(input("Please input sentence:")))

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