Loops

(Read time is about 2 minutes)
by Beanzilla in python

tagged python

Computers love to do the same/simular task over and over again.

Unlike Humans, Computers will do the exact same thing without making mistakes. (Unless there is another mistake, commonly called a programming error)

So what can we do with a loop?

my_list = [0, 1, 2, 3, 4, 5, 6, 7.0, 8, "9"]
for l in my_list:
    if type(l) == type(0.0):
        print(f"I found {l} to be a {type[0.0]}")
    else:
        print(f"I found {l} to not be type {type[0.0]} but type {type(l)}")

I found 0 to not be type <class 'float'> but type <class 'int'>
I found 1 to not be type <class 'float'> but type <class 'int'>
I found 2 to not be type <class 'float'> but type <class 'int'>
I found 3 to not be type <class 'float'> but type <class 'int'>
I found 4 to not be type <class 'float'> but type <class 'int'>
I found 5 to not be type <class 'float'> but type <class 'int'>
I found 6 to not be type <class 'float'> but type <class 'int'>
I found 7.0 to be a <class 'float'>
I found 8 to not be type <class 'float'> but type <class 'int'>
I found 9 to not be type <class 'float'> but type <class 'str'>

So before you get ready to close the page due to complete confusion lets start by breaking this down...

We have the list

my_list = [0, 1, 2, 3, 4, 5, 6, 7.0, 8, "9"]

There are different types inside this list that I am having python display...

I am itterating over the list using for itterator_name in my_list

for l in my_list:
    # Notice the 4 spaces, this tells python these lines are inside the for loop!

If I print(l) we would get the following...

0
1
2
3
4
5
6
7.0
8
9

Next we have the If and Else statement comparing the type of our itterator to the float type...

# Still in the for loop so 4 spaces for each line!
    if type(l) == type(0.0):
        # Another 4 spaces to indicate we are inside the if.
        print("Float")
    else:
        # This is inside the else not the if!
        print(type(l))

This has been simplified so I can keep this shorter.

Next we will talk about Files