Python For Loops

Python for loops are used to iterate over sequences such as lists, tuples, strings and ranges.

• Allows the same operation to be applied to every item in a sequence.
• Avoids the need to manage loop indices manually.

a = ["Geeks", "for", "Geeks"]
for i in a:
    print(i)

Output:

Geeks
for
Geeks

Syntax

for variable in sequence:
    # code block

Loop Through String

Here, a for loop is used to iterate through each character of the string and print them one by one.

s = "Geeks"
for i in s:
    print(i)

Output

G
e
e
k
s

range() Method

range() function is used with for loops to generate a sequence of numbers. It can take one, two or three arguments:

• range(stop) generates numbers from 0 to stop-1.
• range(start, stop) generates numbers from start to stop-1.
• range(start, stop, step) generates numbers from start to stop-1, incrementing by step.

for i in range(0, 10, 2):
    print(i)

Output
0
2
4
6
8