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Python FTW: Under the Hood

For What?

Explore how Python for loops operate by unpacking iterables and assigning values at each iteration. Understand why loop variables are reassigned every cycle, how the for statement grammar works, and how this affects code behavior. This lesson will help you write clearer loops and avoid common mistakes related to variable assignments within for loops.

We'll cover the following...

“The for loop is supposed to be easy, so what’s there to learn about it?”
- Every Python Programmer Ever

Let’s find out!

C++
some_string = "ftw"
some_dict = {}
for i, some_dict[i] in enumerate(some_string):
    i = 10
print(some_dict) # An indexed dict appears.

Explanation

A for statement is defined in ...