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Brainy Fact
True means non-zero number or non-empty object and False means zero number or empty object
or none.
Iterative Statements
In Python, the process of repeating a set of instructions based on a condition is called loop. There are two types
of loops in Python—for loop and while loop. Let us learn about them in detail.
The for Loop
The for loop is used to repeat a set of instructions for a fixed number of times. It means the number of
iterations are known/definite before we start with the execution of a loop. Therefore, the for loop is also known
as definite loop. Indentation of statements is must to specify the block of statements to be repeated using the
for loop. There are commonly two different ways of using the for loop:
• Using Sequence: In this type of for loop, a sequence of values is used on which the loop iterate. The syntax to
use the for loop with a sequence is:
for <counter variable> in <sequence>:
Statements
Where,
✶ for is a keyword.
✶ counter variable is any identifier that keeps a count of the loop.
✶ sequence is any values like integer, string, list, etc.
✶ Statements are always indented can be single or a block.
Different examples of for loop are:
Commands Output
for i in [1,2,3,4]: 1
print(i) 2
3
4
for words in ["hello", "friends", how are you ?"]: hello
print(words) friends
how are you?
for alphabets in "hello!": h
print(alphabets) e
l
l
o
!
Introduction to Python 305

