How to create a "TypeWriter"

Have you ever seen those programs, in which the output is "typed" out? Like, each letter is printed out one by one? If you have, and would want to know how to make it? Well you have ended up in the right place!

Ok, no more talking; let's get right to the code.

So first of all, we need to import the modules:

from time import sleep

One module, actually

Now, we need to define our function; I have named it printt(), but you can name it whatever you want:

def printt(string, delay):
  # Our code will go here
  # Our code will go here
  # Our code will go here

If you have noticed so far but don't know, the string in the brackets of our defined function, that is a parameter. It is uesd as a placeholder for whatever we qant variables/string/numbers. Same for the delay. Delay pauses the print function for a certain amount of time so it makes it look like a "typewriter"

Ok, so far, we have our modules imported and our function defined. Now we can actually start coding.

So, we need a for loop to print out every letter.

I will be using the letter i for every character in the string and string as the string/variable to be "typed" out

def printt(string, delay):
  for i in str(string):
      # Our code will go here
      # Our code will go here
      # Our code will go here      

Next we will put this:

def printt(string, delay):
  for i in str(string):
    print(i, end="", flush = True)
    sleep(delay)

If you're stumped as to what end, and flush are, they are actually parameters for the print function. While you're coding, hover your mouse over the print function and it will show this:

These parameters are actually optional, so you won't need to put them to use the print function. We put the end parameter there without anything in the quotation marks to indicate there is no end, so it keeps on printing from the line before, and flush, I'll explain it right here:

flush is when you print something to the console text gets built up over time, but the new text isn't constantly rendered on the screen, instead its regularly "flushed" to the screen. But printt() prints stuff to the console faster than it can render text, so by putting flush = True in your print statement you're forcing it to render the text in time.

The sleep() function is from the time module, and is used to "pause" the code for a few seconds. Here, sleep() "pauses" the program for 0.05 seconds.

So far we have this:

from time import sleep
def printt(string, delay):
  for i in str(string):
    print(i, end="", flush = True)
    sleep(delay)

Next, we add a print() statement to print a new line after the string is typed out:

from time import sleep
def printt(string, delay):
  for i in str(string):
    print(i, end="", flush = True)
    sleep(delay)
  print('')
  # Not Inside the for loop, or it will mess the program

AND WE ARE DONE!

That's it. I know its simple, but it's worth it as it makes the program less "dull"

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Hope you find this useful