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The else keyword catches anything which isn't caught by the preceding conditions. Example Get your own Python Server. a = 200. b = 33. if b > a: print("b is greater than a") elif a == b: print("a and b are equal") else: print("a is greater than b") Try it Yourself »
In computer programming, we use the if statement to run a block of code only when a specific condition is met. In this tutorial, we will learn about Python if...else statements with the help of examples.
Learn how If-Else Statements control code flow, create dynamic programs, and unlock Python's full potential. Dive into clear examples and expert guide. Skip to content
Python uses the if, elif, and else conditions to implement the decision control. Learn if, elif, and else condition using simple and quick examples.
There is also syntax for branching execution based on several alternatives. For this, use one or more elif (short for else if) clauses. Python evaluates each <expr> in turn and executes the suite corresponding to the first that is true. If none of the expressions are true, and an else clause is specified, then its suite is executed:
How to Use the else Statement in Python. The else statement allows you to execute a different block of code if the if condition is False. Here's the basic syntax: if condition: # code to execute if condition is true else: # code to execute if condition is false.
An if/else statement, sometimes also called an if then else statement, has this default pattern (Python Docs, n.d.): if condition: # Code to execute when 'condition' is true else: # Code to run when 'condition' tests false. When Python comes across an if/else statement in our code, it first tests the condition.
How do Python if..else statements work? An if statement runs code only when a condition is met. Nothing happens otherwise. What if we also want code to run when the condition is not met? That's where the else part comes in. The syntax of an if..else statement looks like this:
The in operator in Python (for list, string, dictionary, etc.) def if_in(s): if 'a' in s: print(f'"a" is in "{s}"') else: print(f'"a" is not in "{s}"') if_in('apple') # "a" is in "apple" if_in('cherry') # "a" is not in "cherry". source: if_basic.py.
It isn't, so it goes on to the second condition, which in Python, we write as elif, which is short for else if. If the first condition isn't met, check the second condition, and if it’s met, execute the expression. Else, do something else. The output is “x is equal to y.”