introduction to loops in python/python loops

WHAT IS LOOP?
 A loop is a way to make a computer do the same thing again and
again until a certain condition is met.
 A loop is a way to repeat a block of code multiple times.
Imagine This:
 If you want to say "Hello" 5 times, instead of writing it 5 times, you can
use a loop to repeat it.

TYPES OF LOOP
 For loop
 While loop

FOR LOOP (DEFINITE LOOP)
 Use it when you know how many times to repeat.
Syntax :
For variable in range (start , end , increment):
#code block to be executed

EXAMPLE
for i in range (0,5) :
print (i)
Output :
0
1
2
3

EXAMPLE
for i in range (1,10,2) :
print (i)
Output :
1
3
5
7

WHILE LOOP (INDEFINITE LOOP)
A while loop is used to repeat a block of code as long as a specified condition is true.
Syntax :
while condition:
# code to repeat

EXAMPLE
count = 1
while count <= 5: # Loop runs while count is 5 or less
print(count)
count += 1 # Increase count by 1 each time
Output :
1
2
3
4
5

CONTROL STATEMENTS IN LOOP:
Break statement:
Definition: Exits the loop immediately, regardless of the loop condition.
Use case: To stop the loop when a specific condition is met.
Syntax :
for item in sequence:
if condition:
break # Exit the loop
# code to execute if condition is False

EXAMPLE
for num in range(1, 10): # Loops from 1 to 9
if num == 5: # Stop the loop when num is 5
break
print(num)
Output :
1
2
3
4

CONTROL STATEMENTS IN LOOP:
Continue:
Definition: Skips the current iteration and moves to the next one.
Use case: To ignore specific iterations based on a condition.
Syntax:
for item in sequence:
if condition:
continue # Skip the rest of the code in this iteration
# code to execute if condition is False

EXAMPLE
for num in range(1, 10): # Loops from 1 to 9
if num == 5: # Skip printing 5
continue
print(num)
Output:
1
2
3
4
6
7

CONTROL STATEMENT IN LOOP
Pass statement:
Pass statement in python does nothing. It’s used when you need to leave a part of your code
Empty but still want it to run without errors. It’s like saying,“I’ll fill this in later.”
Example :
for i in range(5):
pass # Loop does nothing

introduction to loops in python/python loops

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