How to take a step in the For Python cycle

"Learn how to use for loops in Python with this simple example of incrementing a counter by a single step."

For Loops in Python

A for loop in Python is used to iterate through a sequence or collection of items. It is also known as a loop statement. It is used to repeat a certain block of code until a certain condition is met. This allows us to perform operations on each item in the sequence, or to do a certain operation a certain number of times. To create a for loop in Python, we use the keyword "for" followed by a variable name and the sequence we want to iterate over.

for item in sequence:
  # do something with item

In this example, we use the variable item to refer to the current item in the sequence, and then we can do something with it. The sequence is any iterable object, such as a list, tuple, or string. For example, if we have a list of numbers:

numbers = [1, 2, 3, 4, 5]

We can use a for loop to print each number:

for num in numbers:
  print(num)

This will print out each number in the list. We can also use the for loop to do operations on each item in the sequence. For example, if we want to calculate the sum of all the numbers in the list, we can do this:

sum = 0
for num in numbers:
  sum += num

print(sum)

This will print out the sum of all the numbers in the list. For loops are very powerful and are a great way to iterate over a sequence of items in Python.