When coding in any language, there are times when we need to make a decision and execute some code based on the outcome of the decision. Python If-Else is an extension of Python If statement where we have an else block that executes when the condition is false. In case if this condition is evaluated as false then the condition flows to the end of the if block and starts executing the code segment after the if block. Since it is dedented, it is not a part of the if-else statement: Since its amount of indentation matches the if heading, it is always executed in the normal forward flow of statements, after the if-else statement (whichever block is selected). If the condition is true we will print 2 different statements, if the condition is false we will print another 2 statements using Python if else statement. The provided number is equal to 1 An else statement can be combined with an if statement. Syntax. the colon ( ‘ : ‘ ) is used to mention the end of condition statement being used. In this tutorial we look at how to use the if, else and elif statements in Python. Python syntax is almost the same as the pseudo-code written above. An else statement contains the block of code that executes if the conditional expression in the if statement resolves to 0 or a FALSE value. Python Inline if with else statement: Syntax: if else Parameters: : executed if the condition evaluation is true : the condition that will determine which statement to follow The test expression can be called a condition as well. It basically contains two statements and executes either of them based on the condition provided. If the condition is not met, the code below it is not executed and the program executes statement in the Else block. This is probably the simplest yet most frequently used in Python for decision making. Along with these condition you can use string comparison operators or logical operators such as and, or, not for comparison. If else is one of the most used ways to get the job done. Unlike Java or C, which look like Martian hieroglyphics, Python looks almost like English. Basically, it uses whitespace to force you to write neatly formatted code with a clear visual structure. if 2 > 1: print ('condition is true') else: print ('condition is false'). The provided number is greater than 5 print(" Thanks for participating. else: The syntax of if statement in Python is pretty simple. the condition) one by one and if a true condition is found the statement (s) block under that expression will be executed. The syntax to use python if..else statement would be: if condition: statements-1 else: statements-2. However in this guide, we will only cover the if statements, other control statements are covered in separate tutorials. statements-1 The syntax of if-else statement is as follows: Syntax: We can do this easily with the if..elif…else statement. You have entered the else block Syntax of If statement in Python. In this Python example, we will learn about Python If statement syntax and different scenarios where Python If statement can be used.. if Statement . Output (if condition for nested if block returns True): Output (if condition for nested if block returns False and nested if..elif block returns True): Output (if condition for both nested if and nested if..elif block returns False): In the if condition, you can define multiple conditions using python logical operators. if-else statement # An if-else statement executes one set of statements when the condition is true and a different set of statements when the condition is false. If you want to execute some line of code if a condition is true, or it is not. The provided number is equal to 4 or 5 Just like any other fully-featured programming language, Python supports multiple ways of decision making. These are its different forms. elif condition-n: These operators can be used with if or elif condition, In all the syntax I shared above, replace condition with, Output (if and operator from if condition returns True), Output (if or operator from elif condition returns True), Output(if not operator from if condition returns True), Output(if not operator from if condition returns False). The syntax to use python if statement would be: Here as you observe, all the statements under the if block are following the same indentation value. Example: Python if else in one line Syntax. Before the statements, the condition is made clear, once the condition has been processed, the program takes a look at the input and decides if it fulfills the conditions. Syntax. On the other hand, when the “if” condition is met, only then if a block of code is executed and the program then jumps below exiting the If else statement. Python supports the usual logical conditions from mathematics: Equals: a == b Not Equals: a != b Less than: a < b Less than or equal to: a <= b Greater than: a > b Greater than or equal to: a >= b These conditions can be used in several ways, most commonly in … Syntax Explained First, lets look at Pythons if statement code block. If you use the else statement, it can be used once only. If this car doesn't start, use the other one. The provided number is less than 5 This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in the cookie policy. For example, if one number is greater than others do this, if it’s not greater than do this other thing, that’s basically the idea about if else in python (and other programming languages). The if/else statement has Python make decisions. Now we are in main function, if condition-1: What is indentation? The general syntax of single if and else statement in Python is: if condition: value_when_true else: value_when_false. if; if..else; Nested if; if-elif statements. Decision making is one of the core pillars of programming. Python syntax is almost the same as the pseudo-code written above. So in this tutorial we will learn about python if else statement along with their respective syntax using multiple examples. It’s powerful, flexible, and most importantly, extremely easy to read. The syntax of Python if-else statement is given below. if code == 'Tokyo': A condition is an expression that gives the output as a Boolean data-type value like True or False. Exiting nested if..elif..else block Never miss the colons at the end of the if and else lines! This flowchart will give you a graphical representation of the syntax value: In this example we will ask user to provide any integer value. the code block which needs to be executed when the else-if statement is successful is placed after the else if condition. The basic syntax is: Python Conditions and If statements. The syntax of if statement in Python is pretty simple. print(" The input number is even ") Exiting elif block print(" The applicant is not eligible to vote in the elections " ); Python Program to check the input text for right or wrong answer : code = input(" What is the capital of Japan? ") Now we are in main function, # nested if block starts, notice the indentation, # nested if..elif block starts, notice the indentation, "You have entered into nested if..elif block", # nested if..elif..else block continues, notice the indentation, Enter any number: 1 So, let me know your suggestions and feedback using the comment section. if condition: do this else: do that. Python If statement is a conditional statement wherein a set of statements execute based on the result of a condition. if condition: do this else: do that. THE CERTIFICATION NAMES ARE THE TRADEMARKS OF THEIR RESPECTIVE OWNERS. Now that we have seen the syntax, flowchart, and need of if else statements, let’s take a look at some practical examples to see it in action: A Python Program to check if the input number is even or odd. a = 3 b = 2 if a==5 and b>0: print('a is 5 and',b,'is greater than zero.') Python – Syntax of if..else statement if condition: block_of_code_1 else: block_of_code_2 block_of_code_1: This would execute if the given condition is true block_of_code_2: This would execute if the given condition is false. Form 1- using if. Examples to Implement else if Statement in Python. Now we are in main function, Enter any number: 3 Use logical and, or, not operator in your python scripts to define multiple condition. Given below is the syntax of Python if Else statement. You have entered the if block But we can also execute code when a specific condition did not happen. if boolean_expression: statement(s) else: statement(s) Run this program ONLINE. statements-3, # if block starts, notice the indentation, Enter any number between 1-10: 6 if 2 > 1: print ('condition is true') else: print ('condition is false'). Compare values with Python's if statements: equals, not equals, bigger and smaller than. Python supports the usual logical conditions from mathematics: Equals: a == b; Not Equals: a != b; Less than: a < b; Less than or equal to: a <= b; Greater than: a > b; Greater than or equal to: a >= b; These conditions can be used in several ways, most commonly in "if statements" and loops. There are other control flow statements available in Python such as if..else, if..elif..else, nested if etc. statements-3, if condition: The Syntax of an If Else. Start Your Free Software Development Course, Web development, programming languages, Software testing & others. Once the limitations have been defined, the code’s body will only run when the ‘If’ statement is true. IF ELSE syntax for the Django template is slightly different.If is the builtin tag in Django templates. Many programming languages have a ternary operator, which define a conditional expression. Another fragment as an example: if balance < 0: transfer =-balance # transfer enough from the backup account: backupAccount = backupAccount-transfer … To no one’s surprise, there can be so many instances where a program may have to take a decision before proceeding. An if statement in python takes an expression with it. #If Statement if condition: code #elif Statement elif condition: code #Else Statement else: code Let us see at various python decision making expressions in details with syntax and example. Yes or No >> ").lower() if answer == "yes" : print("You have cleared the test.") Following is the general syntax of using if statement in Python: if expression: #Statements to be executed here if condition is true else: #Statements to be executed here if condition is false. So, this is how we can use the if…else statement in python to write a code in which the flow of execution can be controlled and directed to any one of the two directions, based on the condition results. Python If Else is used to implement conditional execution where in if the condition evaluates to true, if-block statement (s) are executed and if the condition evaluates to false, else block statement (s) are executed. There are other control flow statements available in Python such as if..else, if..elif..else, nested if etc. The general Python syntax for a simple if statement is. print("Congratulations !