Indentation

Note the indentation in the for loop block:

    for i in range(10, 1, -1): 
       print("Count down no: ", i)

Python executes the block of code under the for loop statement. It is one of the features of the Python programming language. It executes any piece of code under the for loop as long as it has same level of indentation:

    for i in range(0,10): 
       #start of block 
       print("Hello") 
       #end of block

The indentation has the following two uses:

• It makes the code readable
• It helps us identify the block of code to be executed in a loop

It is important to pay attention to indentation in Python as it directly affects how a piece of code is executed.