iteration python code example

Example 1: 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]

Example 2: what is iteration in python

# Iteration is the execution of a statement repeatedly and without
# making any errors.

Example 3: how to use iteration in python

>>> a = ['foo', 'bar', 'baz']
>>> for i in a:
...     print(i)
...
foo
bar
baz

Example 4: how to use iteration in python

for i = 1 to 10
    <loop body>

Example 5: python iterator

pies = ["cherry", "apple", "pumpkin", "pecan"]

iterator = iter(pies)

print(next(iterator))
#prints "cherry" because it's the current one being iterated over

Example 6: how to use iteration in python

n = 5
while n > 0:
    print n
    n = n-1
print 'Blastoff!'