Answers for "how to run a loop not for all items of variables in python"

python return iteration number of for loop

# Basic syntax:
for iteration, item in enumerate(iteratable_object):
	print(iteration)
# Where:
#	- item is the current element in the iteratable_object
#	- iteration is the iteration number/count for the current iteration

# Basic syntax using list comprehension:
[iteration for iteration, item in enumerate(iteratable_object)]

# Example usage:
your_list = ["a", "b", "c", "d"]

for iteration,item in enumerate(your_list):
	(iteration, item) # Return tuples of iteration, item
--> (0, 'a')
	(1, 'b')
	(2, 'c')
	(3, 'd')

[iteration for iteration, item in enumerate(your_list)]
--> [0, 1, 2, 3]

multiple variables in for loop python

for i, j in zip(range(x), range(y)):
    # Stuff...