The code snippet `for number in numbers:` is the beginning...

August 24, 2025 at 12:49 PM

for number in numbers:

The code snippet for number in numbers: is the beginning of a for loop in Python.

Detailed Explanation:

  1. for keyword:

    • It initiates a loop to iterate over a sequence or iterable (like a list, tuple, string, or range).
  2. number:

    • This is a loop variable that takes on the value of each item in the numbers iterable, one at a time, during each iteration of the loop.
  3. in numbers:

    • This specifies the iterable (numbers) over which the loop will iterate. numbers is expected to be a collection such as a list, tuple, or any other iterable object.

What it does:

It loops through each element of the numbers collection. On each iteration:

  • It assigns the current element of numbers to the variable number.
  • After executing the body of the loop, it moves to the next element of numbers.

Example:

numbers = [1, 2, 3, 4]

for number in numbers:
    print(number)

Output:

1
2
3
4

The loop went through each element of the list numbers and printed it.

If there's no body for the loop written after this statement, the code will do nothing as written.

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