I want to make such program which reads characters from a string and prints each character after some delay so its look like typing effect.
Now my problem is sleep f
To make it easier, You should put a sys.stdout.flush and a def function. For example:
    import sys
    import time
    def print_slow(str):
        for char in str:
            time.sleep(.1)
            sys.stdout.write(char)
            sys.stdout.flush()
print_slow('Hello')
This should work because I have tested it. The def makes it easier to write out your strings and you can custom it anyway you like. (: