Conditional Statements In Python

Introduction

 

In this article, I will explain conditional statements in Python. Conditional statements are also called decision-making statements. We use those statements while we want to execute a block of code when the given condition is true or false.

 

Type of condition statement in Python:

• If statement.
• If Else statement.
• Elif statement.
• Nested if statement.
• Nested if else statement.

If statement

 

If statement is most usually used as a conditional statement. 

 

Syntax

if(condition):
{
#if statement
}

Example

 

Program for if statement,

a = 10
b = 20
if a<b:
  print("a is less than b")

Output

 

 

If else statement

 

If else is a conditional statement. The statement itself says that if a given condition is true or false. True means executing the “if” statement to the output. False means executing the “else” statement to the output.

 

Syntax

if(condition):
{
   # if statement
}
else:
{
   # else statement
}

Example

 

Program for if else statement,

a = 10
b = 20
if a==b:
  print("a and b are equal")
else:
  print("a and b are not equal")

Output

 

 

Elif statement

 

Elif is a shortcut of else if condition statements. In Python one or more conditions are used in the elif statement.

 

Syntax

if(condition):
{
   # if statement
}
elif(condition):
{
   # elif statement
}
else:
{
   # else statement
}

Example

 

Program for elif statement

a = 10
b = 10
if a < b:
  print("a is greater than b")
elif a == b:
  print("a and b are equal")
else:
  print("b is greater than a")

Output

 

 

 

Nested if statement

 

In python is using "if" statements inside other if statements it is called nested if statement.

 

Syntax

if(condition):
{
     if(condition):
     {
        # if statement
     }
}

Example

 

Program for nested if statement,

a= 1001
if a> 100:
  print("Above 100")
  if a > 1000:
    print("and also above 1000")

Output

 

 

Nested if else statement

 

In Python is using one “if else” statement inside other  if else statements it is called nested if else statement.

 

Syntax

if(condition):
{
     if(condition):
     {
       #if statement
     }
     else:
     {
        #else statement
     }
}
else:
{
 #else statement
}

Example

 

Program for nested if else statement,

a=int(input("enter the a value"))#user give a value
if a> 100:
  print("Above 100")
  if a > 1000:
    print("and also above 1000")
  else:
    print("and also below 1000")
else:
    print("below 100")

Output

 

 

Conclusion

 

In this article, we have seen conditional statements. I hope this article was useful to you. Thanks for reading!