Python if-else Statement with example and syntax by - SHADBOX.COM
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Created By: swazahmad Created at: 07-24-2021
Tags: python
Python if-else Statement
In all programming language if-else statement is used to test a particular condition and if the condition is true ,it execute the if block and the condition is false ,it execute the else block.
In python decision making is done by the following statement :
- If statement
- If else statement
- Nested if statement
1.If statement :
if statement is used to check the condition if condition is true it execute the particular code of block.
Syntax :
if expression :
Statements(Conditions)
Examples :
>>> a =10
>>> if a == 10:
print("true")
true
>>>
2.If else statement :
if-else statement provide an else block, if statement condition is false then else condition is execute. if the condition of if block is true ,then the if block is execute.otherwise else part executed.
Syntax :
if expression :
Statements(Conditions) # if condition block
else:
Statements(Conditions) # else condition block
Statements(Conditions) # if condition block
else:
Statements(Conditions) # else condition block
Example :
>>> a =100
>>> if a != 100:
print("true")
else:
print("false")
false
>>>
Nested if statement :
the elif Statement enable us to check multiple condition and execute the specific block of statement depending upon the true condition among them.
Syntax :
if expression 1:
Statements(Conditions)
elif expression 2:
Statements(Conditions)
elif expression 3:
Statements(Conditions)
elif expression 4:
Statements(Conditions)
else:
Statements(Conditions)
Statements(Conditions)
elif expression 2:
Statements(Conditions)
elif expression 3:
Statements(Conditions)
elif expression 4:
Statements(Conditions)
else:
Statements(Conditions)
Example :
>>> a =100
>>> if a ==40 :
print("number is 40")
elif a == 50:
print("number is 50")
elif a == 100:
print("numer is 100")
else:
print("number is not present")
numer is 100
>>>
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