Let's start today's topic of “If else and elif in python”, with a definition:
“If, else and elif statement can be defined as a multiway decision taken by our program due to the certain conditions in our code.”
For few viewers, the term “elif” is new as they are not familiar with the word and it is also not like most of the other words such as list or loops, etc. that have the same meaning in the English language and in Python programming. In fact, in English “elif” means honest. But if you have ever done programming in any language, you must be familiar with “else-if” statement, well “elif” is just that.
Now coming towards a more formal sort of description. “If and else” are known as decision-making statements for our program. They are very similar to the decision making we apply in our everyday life that depends on certain conditions. The everyday example is thoroughly explained in the tutorial so I will not waste your time on that, instead, I would now like to focus on more technical details.
Let us focus a little on the working:
Our compiler will execute the if statement to check whether it is true or false now if it’s true the compiler will execute the code in the “if” section of the program and skip the bunch of code written in “elif” and “else”. But if the “if” condition is false then the compiler will move towards the elif section and keep on running the code until it finds a true statement(there could be multiple elif statements). If this does not happen then it will execute the code written in the “else” part of the program.
An “if” statement is a must because without an if we cannot apply “else” or “else-if” statement. On the other hand else or else if statement are not necessary because if we have to check between only two conditions we use only “if and else” and even though if we require code to run only when the statement returns true and do nothing if it returns false then an else statement is not required at all.
Now Let’s talk about some technical issues related to the working of decision statements:
We can also use Boolean or our custom-made conditions too.
Bonus part:
As we know that an “if” statement is necessary and you can’t have an “else” or “else-if” without it, but let’s suppose you have a large amount of code and for some reason, you have to remove the “if” part of the code (because maybe your code is better without it) but you do not want to do lots of coding again. Then the solution is just to write pass instead of the code and this will help your code run without any error without executing the if part.
# var1 = 6
# var2 = 56
# var3 = int(input())
# if var3>var2:
# print("Greater")
# elif var3==var2:
# print("Equal")
# else:
# print("Lesser")
# list1 = [5, 7, 3]
# print(15 not in list1)
# if 15 not in list1:
# print("No its not in the list")
# Quiz
print("What is your age?")
age = int(input())
if age<18:
print("You cannot drive")
elif age==18:
print("We will think about you")
else:
print("You can drive")
age = int(input("enter your age")) if age <=4: print("enter logical age") elif age >=100: print("enter logical age") elif age > 18: print("you ca drive") elif age==18: print("we cant decide") else: print("you cant")
the answer of challenge given by you sir: print "what is your age" age = int(input()) if ((age<7) or (age>100)): print "you entered wrong age" elif age<18: print "you can not drive" elif age==18: print "We will think about you" else: print " you can drive"
not show description
print("What is your age") age=int(input()) if age<18: print("You cannot drive") elif age==18: print("We will think about you") elif age>100: print("over age") else: print("You can drive")
Full Notes and Source Code ::::::::::} https://github.com/Optimized-World/Complete-Python-Tutorial-and-Notes |::::::::::::| Thanks, Harry Bhai for Awesome Tutorials
age = int(input("Enter the age:")) if age>=18: print("you are eligible for 2 wheeler licence") if age>=20: print("you are eligible for 4 wheeler licence") else: print("you are not eligible 4 wheeler licence") else: print("you are under age")
print("What is your age?") age = int(input()) if age >= 100: if age == 100: print("can drive") else: print("Out of age") if age <= 18: if age == 18: print("We can not decide, please come to us and pass the driving test") else: print("You can not drive")
print("What is your age?") age = int(input()) if 10 < age < 100: x=age if x<18: print("You cannot drive") elif x==18: print("We will think about you") else: print("You can drive") else: print("sorry invalid age")
age = int(input("please enter your age " , )) print(age) if age<18: print("you can't drive until you are 18") elif age == 18: print("we can't decide") else: print("you are eligible to drive")
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