Python Statements

Python Statements: A statement is a command that the programmers give to the compiler. There is a different type of statements in python. They are as follows: Python If Else, Elif, Else, Short Hand If, Short Hand If Else, And, Or, Break Statement, Continue statement.



Python Statements

Python Statements

Python If else Statement

In python statements, If Statement is used for decision making. It will run the body of code only when IF statement is true. When you want to justify one condition while the other condition is not true, then you use “if statement

Syntax:
if expression: statement
else: statement

Python if else statement

Example

num = 4 
if num >= 0:
print("Positive or Zero")
else: 
print ("Negative number")

Output: Positive or Zero

Python Elif Statement

It is used in python and used if the previous conditions were not true, then try this condition.

Syntax:
if expression1: statement
elif
expression2: statement
elif
expression3: statement
else: statement

FlowChart

Python elif statement

Example

a = 55 
b = 55 
if b > a:
print("b is greater than a")
elif a == b:
print("a and b are equal")

Output: a and b are equal

Python Else Statement

Python else statement is an optional statement that is normally used in an “if-else” or “if-else” construction.
Example

a = 200 
b = 33 
if b > a: 
print("b is greater than a")
elif a == b:
print("a and b are equal")
else: print ("a is greater than b")

Output: a is greater than b

Python Short Hand If Statement

If you are having only one statement to execute, you can put it on the same line as the if statement.

Example

if a > b:print("a is greater than b")

Output: “a is greater than b”

Python Short Hand If …Else Statement

If you are having only one statement to execute, one for if, and one for else, you can put it all on the same line:

Example

print("A") 
if a > b
else print("B") 

Output: B

If you want, we can have multiple else statements on the same line.

Example

print("A") if a > b else print ("=") if a == b else print("B")

Python And Statement

It is a logical operator and is used to combine conditional statements.

Example

if a > b and c > a: 
print("Both conditions are True")

Output: Both conditions are true.

Python Or Statement

It is used for combining conditional statements.

Example

if a > b or a > c: 
print ("At least one of the conditions is True")

Python Break Statement

You can stop the loop, even if while the condition is true. The most common use for the break is when some external condition is triggered requiring a hasty exit from a loop. The break statement can be used in both while and for loops.

If you are using nested loops, the break statement stops the execution of the innermost loop and start executing the next line of code after the block.

Syntax: break;

Flowchart

Python break statement
Example

i = 1 
while i < 6:
print(i) 
if i == 3:
breaki += 1

Output
1
2
3

Python Continue statement

It returns the control to the beginning of the while loop. The continue statement rejects all the remaining statements in the current iteration of the loop and moves the control back to the top of the loop. The continue statement can be used in both while and for loops.

Syntax: continue

FlowChart

python continue statement
Example

#!/usr/bin/python
for letter in 'Python':#First Example
   if letter == 'h':
      continue
   print 'Current Letter :', letter
var = 10   #Second Example
while var > 0:              
   var = var -1
   if var == 5:
      continue
   print 'Current variable value :', var
print "Good bye!"

Output
Current Letter : P
Current Letter : y
Current Letter : t
Current Letter : o
Current Letter : n
Current variable value : 9
Current variable value : 8
Current variable value : 7
Current variable value : 6
Current variable value : 4
Current variable value : 3
Current variable value : 2
Current variable value : 1
Current variable value : 0
Good bye!