Iteration statements in python programming

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WHAT ARE LOOPS ?
print(“Mathew")
print("Mathew")
print("Mathew")
print("Mathew")
print("Mathew")
print("Mathew")
print("Mathew")
print("Mathew")
print("Mathew")
print("Mathew")
3
Consider I want to print my name 10 times.
print(“Mathew"
)
OR

A loop is used to repeat an instruction multiple times until a condition goes wrong.
4
“

There are two primitive loop types in Python –
5
Types of Loops in Python
For in
loop
While
loop

A for in loop is used for iterating over a sequence (that is either a list, a tuple, a dictionary, a
set, or a string)
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For in Loops
Syntax –
for counter in sequence :
statement(s)

A while loop is used to execute a set of statements as long as a condition is true.
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While Loops
Syntax –
while condition :
statement(s)

# for in loop
iterable_objs = range(6)
for iterator in iterable_objs:
print(iterator)
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# while loop
i = 42
while not(i<=10):
print(i)
i -= 7

# for in loop
numbers = [0,1,2,3,4,5]
for num in numbers:
print(num)
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# for in loop
for x in range(6):
print(x)

# for in loop
for x in range(3,6):
print(x)
10
# for in loop
for x in range(6,3,-1):
print(x)
# for in loop
for x in range(3,8,2):
print(x)
3
4
5
3
5
7
6
5
4

With the else statement, we can run a block of code once a condition is no longer true.
11
The else Statement
Syntax –
while condition :
statement(s)
else :
statement(s)

Loop control statements change execution from its normal sequence. There are 3 types –
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Loop Control Statements
break
statement
continue
statement
pass
statement

# Break
for x in range(6):
if x==4:
break
print(x)
# Continue
for y in “Mathew":
if y=='h':
continue
print(y)
# Pass
mylist = [1,2,5,8,6,3]
for c in mylist:
pass
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For in loop default increments by 1.
Else statement in loop won’t work if the loop is terminated by
break statement.
Nested loop is a type of non primitive loops in python.
In this, we can use multiple for or while loops inside a for or while
loop.
Points to be noted

LET’S REVIEW TODAY’S LEARNING
What is Loops in Python?
In this, we have understood the basic
meaning of loop and have gone
through definition of loops.
Else statement in Loop
Here we have learned about the else
statement. It’s implementation and
where it works.
Benefits of using Loop
Here we have gone through some
examples which cleared why loops are
efficient and less time consuming.
Types of Loop in Python
We have learned the two primitive
types of loops in Python and their
implementation.
Loop Control Statements
Here, we have gone through the three
different loop statements in Python.
How and where they are used.
Points to be noted
Here we have covered some extra
points related to our topics.

THANKS! THANKS! THANKS! THANKS! THANKS! THANKS! THANKS!

Iteration statements in python programming

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