Mar 5, 2013 · "Elif" seems to have originated with the C preprocessor, which used #elif long before Python AFAICT. Obviously, in that context having a single-token directive is valuable, since parsing #else if <code> vs. #else <code that could theoretically even be an if statement> would've complicated a syntax that was intended to be bog-simple. –

Apr 1, 2014 · In some cases, elif is required for correct semantics. This is the case when the conditions are not mutually exclusive: if x == 0: result = 0 elif y == 0: result = None else: result = x / y In some cases it is efficient because the interpreter doesn't need to check all conditions, which is the case in your example.

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No, elif is the analogue of else if in C, which has precisely equivalent power (even though it's implemented with different parsing rules). You can use else if instead of case even in C. And this certainly has nothing to do with why elif is used in python rather than else if. –

Dec 25, 2012 · if expression1: statement1 elif expression2: statement2 else: statement3 Or a real-world example: if i > 100: x = 2 elif i < 100: x = 1 else: x = 0 I just feel if the example above could be written the following way, it could look like more concise. x …

@jdi Though conditional-expressions may not be to your taste, they were specifically designed to handle if-elif-elif-else chains, just as the OP requested. They aren't hard to learn and can gracefully handle situations that aren't as amenable to dictionary lookup logic: 'A' if grade>=90 else 'B' if grade>=80 else 'C' if grade>=70 else 'F'.

May 12, 2020 · On the other hand by using elif you'll be able to have all the different code paths on the same level of indentation. Here is an example. if a: A() else: if b: B() else: if c: C() As you can see, this is kind of confusing. Here is the elif based example. if a: A() elif b: B() elif c: C()

Jan 13, 2015 · if platform == 'ios': do_something() elif platform == 'android': do_something_else() And this piece of code was strongly criticized by one of my colleague. He accused me why I don't have an else block to handle the rest part. In my opinion, all I need to do is to deal with these two situations, since I did not write the else block.

Aug 27, 2012 · python 2.7. Is it possible to do this: print "Enter a number between 1 and 10:" number = raw_input("> ") if number in range(1, 5): print "You entered a number in the range of 1 to 5" elif number in range(6, 10): print "You entered a number in the range of 6 to 10" else: print "Your number wasn't in the correct range"

Jan 6, 2016 · i'm fairly new to python so i'm sure i'm doing something wrong. i am defining a function which accepts a string variable. i can not be sure exactly what the variable will be, but there a are a 3 va...