#!/usr/bin/python3
# -*- coding: utf-8 -*-

import secrets

otp: str = ""
for _ in range(55):
    otp += secrets.choice("ABCDEFGHIJKLMNOPQRSTUVWXYZ .")

print(otp)

# or more concisely
otp = "".join([secrets.choice("ABCDEFGHIJKLMNOPQRSTUVWXYZ .") for _ in range(55)])
print(otp)