Conditional Statement

Conditional statement are used to check for the condition and based on the result, it will execute the statement

If Statement

Check the condition, if its true then execute the statement which is available inside the block

#IF statement
age = 25

#Check the age is greater tha 18
if age>18:
    print("Eligible to Vote")

Output

Eligible to Vote

If - Else Statement

Check the condition, if its true then execute the statement which is available inside the if block, if its false then execute the statement which is available inside the else block

#IF - ELSE statement
age = 14

#Check the age is greater tha 18
if age>18:
    print("Eligible to Vote")
else:
    print("InEligible to Vote")

Output

InEligible to Vote

If - Elif - Else Statement

With the help of elif keyword, we can check the multiple else condition in python

#IF - ELIF - ELSE statement
mark = 75

#Checking the mark with different grade levels
if mark>90:
    print("A Grade")
elif mark>80:
    print("B Grade")
elif mark>70:
    print("C Grade")
elif mark>60:
    print("D Grade")
elif mark>50:
    print("E Grade")
else:
    print("F Grade")

Output

C Grade

Nested If Else Statements

Inside the conditional statements, we can nest multiple if and else condition like the below example

#Nested IF-ELSE statements
mark = 75

#Checking the mark with different grade levels
if mark>50:
    if mark>60:
        if mark>70:
            if mark>80:
                if mark>90:
                    print("A Grade")
                else:
                    print("B Grade")
            else:
                print("C Grade")
        else:
            print("D Grade")
    else:
        print("E Grade")
else:
    print("F Grade")

Output

C Grade

Shorthand If Statement

If we have only one line inside if block, then we can use shorthand method like below to reduce the coding lines

#Shorthand IF statement
age = 25

#Check the age is greater tha 18
if age>18: print("Eligible to Vote")

Output

Eligible to Vote

Shorthand Else Statement

If we have only one line inside if and else block, then we can use shorthand method like below to reduce the coding lines

#Shorthand IF-ELSE statement
age = 14

#Check the age is greater than 18
print("Eligible to Vote") if age>18 else print("InEligible")

Output

InEligible

Pass Statement

Sometimes for future implementation, we required the placeholders, Pass statement helps to achieve this, it ignores by interpreter and won't throws any error

#Pass statement
age = 14

#Interpreter ignores pass statement
if age>18:
    pass

print("Age is : {}".format(age))

Output

Age is : 14