for loop

for loop:

If we want to execute some action for every element present in some sequence.

Syntax:

for variable in sequence:

  body

note: sequence means string,list,set,tuple or any other collections.

Note:

for is a keyword, followed by a variable, for loop contains the keyword 'in'  and specification of a range.
For loop statements executed repeatedly with the variable assuming all values inside range.

Assignment:

Find the factorial of a given number using for loop:
prod=1
n=int(input("enter any no"))
for i in range(1,n+1):
    prod=prod*i
print(prod)

"""output:
enter any no3
6

>>> """

Display in reverse order by using for loop:

>>> for a in range(10,0,-1):

            print(a)

output:10 9 8 7 6 5 4 3 2 1

>>> 

#wap perfect number or not?: Sum of the given no must be equal to given no

n=int(input("enter any no"))

sum=0

for i in range(1,n):

    if n%i==0:

        sum=sum+i

if n==sum:

    print("it is perfect no")

else:

    print("it is not perfect no")

"""output:

enter any no6

it is perfect no

>>> """

#wap to display the elements of a list

a=[10,2.5,'s','kadapa']

#display each element from the lsit

for i in a:

    print(i)

output:  10 2.5 s kadapa

>>> 

#sum of a list numbers using for loop:

a=[10,20,30]

sum=0

print(a)

for i in a:

    sum=sum+i

print(sum)

"""output:

[10, 20, 30]

60

"""

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