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Welcome to the Rot13 in Python page! Here, you’ll find the source code for this program as well as a description of how the program works.
import sys
from string import ascii_uppercase, ascii_lowercase
def rot_13(string):
return ''.join([encrypt_char(c) for c in string])
def encrypt_char(c):
if c in ascii_uppercase:
ltrs = ascii_uppercase
elif c in ascii_lowercase:
ltrs = ascii_lowercase
else:
return c
new_index = (ltrs.index(c) + 13) % 26
return ltrs[new_index]
def exit_with_error():
print('Usage: please provide a string to encrypt')
sys.exit(1)
def main(args):
try:
string = args[0]
if len(string) <= 0:
exit_with_error()
print(rot_13(string))
except (IndexError, ValueError):
exit_with_error()
if __name__ == "__main__":
main(sys.argv[1:])
Rot13 in Python was written by:
If you see anything you’d like to change or update, please consider contributing.
Note: The solution shown above is the current solution in the Sample Programs repository as of Oct 15 2020 22:17:17. The solution was first committed on Dec 23 2018 01:26:11. As a result, documentation below may be outdated.
No ‘How to Implement the Solution’ section available. Please consider contributing.
No ‘How to Run the Solution’ section available. Please consider contributing.