printing slowly (Simulate typing)

In Python 2.x you can use sys.stdout.write instead of print:

for letter in str:
    sys.stdout.write(letter)
    time.sleep(.1)

In Python 3.x you can set the optional argument end to the empty string:

print(letter, end='')

This is my "type like a real person" function:

import sys,time,random

typing_speed = 50 #wpm
def slow_type(t):
    for l in t:
        sys.stdout.write(l)
        sys.stdout.flush()
        time.sleep(random.random()*10.0/typing_speed)
    print ''

Try this:

def print_slow(str):
    for letter in str:
        sys.stdout.write(letter)
        sys.stdout.flush()
        time.sleep(0.1)

print_slow("Type whatever you want here")