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What are different types of Loops in Python?

Programming languages provide various control structures that allow for more complicated execution paths. A loop statement allows us to execute a statement or group of statements multiple times. Python provides 3 ways for executing the loops:

  1. For Loop

  2. While Loop

  3. Nested Loop



Types of Loop

Python programming language provides following types of loops to handle looping requirements.


1. For Loop

This is traditionally used when programmers had a piece of code and wanted to repeat that 'n' number of times.


Code:

fruits = ["Apple", "Orange", "Banana"]
print("Example of FOR Loop")
for x in fruits:
  print(x)

Output:




2. While Loop

The loop gets repeated until the specific Boolean condition is met.


Code:

count = 0
while (count < 3):
    count = count + 1
    print("Banana")

Output:



3. Nested Loop

Programmers can use one loop inside another; i.e., they can use for loop inside while or vice - versa or for loop inside for loop or while inside while.


Code:

adj = ["Red", "Big", "Tasty"]
fruits = ["Apple", "Orange", "Banana"]
print("Example of NESTED Loop")
print("The List",fruits, "\n")

print("After adding two lists")
for x in adj:
  for y in fruits:
    print(x, y)

Output:



Loop Control Statement

Loop control statements change execution from its normal sequence. When execution leaves a scope, all automatic objects that were created in that scope are destroyed.


1. Break Statement

It terminates the loop statement and transfers execution to the statement immediately following the loop.


Code:

fruits = ["Apple", "Orange", "Banana"]
print("Example of BREAK Statement")
for x in fruits:
  print(x) 
  if x == "Orange":
    break

Output:



2. Continue Statement

The Continue Statement causes the loop to skip the remainder of its body and immediately retest its condition prior to reiterating.


Code:

fruits = ["Apple", "Orange", "Banana"]
print("Example of CONTINUE Statement")
for x in fruits:
  if x == "Orange":
    continue
  print(x) 

Output:



3. Pass Statement

The Pass Statement is used when a statement is required syntactically but you do not want any command or code to execute.


Code:

for x in [0, 1, 2]:
  pass


Happy Learning Happy Reading!


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