For loop in Python

1 - The For loop in Python ... 

The for loop in Python, allows to execute repeated instructions.

Sytax:

for counter in range(start_counter, end_counter):
     instructions...

Example. display the first 10 numbers

for i in range (1,11):
     print(i)
#prints the first 10 numbers 1, 2, ..., 10

Note 

Note that in the loop for i in range(1, n) the last one which is n is not included! This means that the loop stops at order n-1.

2- The repetitive structure While 

The while structure is used to execute a set of statements as long as a condition is fulfilled and execution stops when the condition is no longer satisfied.

Sytax:

while (condition):
       intructions ...

Example. display of the first 10 integers with the while loop

i = 1
while(i <= 10):
    print (i)
    i = i + 1

Younes Derfoufi