The If-else statement is further categorized according to their usage pattern. Python throws a syntax error pointed at the last "e" of "else:", preceded by an if statement and inside a while loop. if test_expression: statements else: statements. The Python Elif Statement also called as the Python Else If Statement is very useful when we have to check several conditions. The test expression can be called a condition as well. Lastly I hope this tutorial guide on python if else statement was helpful. Exiting if block In the following example, we will use and operator to combine two basic conditional expressions in boolean expression of Python If-Else statement.. Python Program. Wie Sie Bedingungen in Python richtig nutzen können, erfahren Sie in diesem Praxistipp. However, as the number of conditions increase, Nested If code complexity will also increase. It can be used as if, if-else or if-elif-else and nested if-else. Now we are in main function, Enter any number: 4 if 2 > 1: print ('condition is true') else: print ('condition is false'). If Statement; If-else Statement; Nested If-else Statement; If-else-if Ladder Statements; Each of the above four listed categories of the If-Else Statement in Python is explained in detail below with the help of syntax explanation and examples. As a result, the condition is satisfied, and the statement print (‘The condition is True’) is executed. The conditional if..elif..else statement is used in the Python programming language for decision making. Python if Statement Syntax if [conditional expression]: statement(s) The if” statement is used to make decisions. Being able to lay down proper conditional statements is not only necessary to get good at programming, but it is also essential to get things done more times than often. You have entered the else block # statements to execute when the conditions are met are inserted here You have entered into nested if block You have entered the elif block number = int(input(" Please enter the number to check : ")) Here, in the syntax, we are illustrating a series of branching statements under different conditions which is also called conditional branching in any language. You passed the test.") In Python, the intended purpose of using if-else is decision making. In Python, we use the if statement to evaluate a condition. If this car doesn't start, use the other one. In Python, any non-zero value is treated as True and a zero is treated as False. Let us know more about Python IF, ELIF and ELSE control statements with examples using this Last Minute Python tutorial. Python's if statements can compare values for equal, not equal, bigger and smaller than. Python if..elif..else Statement Syntax if expression: body of if elif expression: body of elif else: body of else. print(" The input number is odd "). So, let us see the various ways in which one can use inline if in python. The syntax of Python if-else statement is given below. Python if..else Flowchart Explanation: The else-if statement in python is represented as elif. The basic syntax is: You have entered the else block You have entered into nested if..elif block Python is one of the best languages to learn for someone new to programming. The syntax of the if...else statement is − if expression: statement(s) else: statement(s) Flow Diagram Example #!/usr/bin/python3 amount = int(input("Enter amount: ")) if amount<1000: discount = amount*0.05 print ("Discount",discount) else: discount = amount*0.10 print ("Discount",discount) print ("Net payable:",amount-discount) Output Python if statement helps in making decisions in the program. Inline if is a concise version of if…else statement can be written in just one line. Python If else Syntax. In python we can use if..elif..else statement for such conditional checks. 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. Python If Statement. statements-1 This is the syntax of if-elif-else statement. If else is one of the most used ways to get the job done. To no one’s surprise, there can be so many instances where a program may have to take a decision before proceeding. 3. 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. Syntax of If statement in Python. statements-1 This flowchart will give you a graphical representation of the syntax value: In this example we will ask user to provide any integer value. Syntax if Logical_Expression : Indented Code Block 1 else : Indented Code Block 2 Flowchart If-Else Statement Flowchart Example answer = input("Is Python an interpreted language? You have entered the else block Random package is imported and its randint function is used to generate a number by specifying the range in parenthesis. Now we are in main function, Enter any number: 3 The True boolean represents zero exit status while the False boolean represents non-zero exit status. If you use the else statement, it can be used once only. You have entered the if block If the condition is true, then do the indented statements. As soon as the interpreter encounters the if statement, it evaluates the condition in the if-statement, and if that condition evaluates to True, then it executes the suite in if-block, i.e., statements in the if-block and skips the statements in else part. You have entered the else block The decision-making process is required when we want to execute code only if a specific condition is satisfied. 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. Python if...else Statement Syntax of if...else if test expression: Body of if else: Body of else. You have entered the if block Now we are in main function, Enter any number: 2 # Statements to be executed when the conditions are not met. elif condition-n: 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. 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). Now we are in main function, "The provided number is greater than 5 and less than 10", Enter any number: 6 else: Syntax. “). The else statement is an optional statement. Syntax of if..else statement, if condition: statement 1 statement 2 statement 3 else: statement 4 statement 5 statement 6 . © 2020 - EDUCBA. 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. 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. Yes or No >> ").lower() if answer == "yes" : print("You have cleared the test.") The syntax to use python if..else statement would be: if condition: statements-1 else: statements-2. If else in Python: learn the syntax Single condition example. A condition is an expression that gives the output as a Boolean data-type value like True or False. If ...else if condition: statements elif condition: statements else: statements If, elif and else are keywords in Python. In this Python If Else statement program we are going to place 4 different print statements. The general syntax of single if and else statement in Python is: if condition: value_when_true else: value_when_false. Syntax of if statement. Python if else is a conditionals statement, which basically is used to have your program make decisions. The syntax of if-else statement is as follows: Syntax: The provided number is equal to 2 You have entered the else block In the If..else statement, the condition test is first of all. The else statement is an optional statement and there could be at most only one else statement following if. Python If Statement. Never miss the colons at the end of the if and else lines! Syntax. Now we are in main function, if condition-1: print(" The input number is even ") Python IF Statement. There are other control flow statements available in Python such as if..else, if..elif..else, nested if etc. Decision making is the most important aspect of all programming languages because sometimes the programmer may want to execute some block of code only on some specific condition which he/she may not know in advance. Now we are in main function, Enter any number: 4 Here we discuss an introduction, flow chart, syntax, and examples of if else Statement in Python with some sample code. statements-3, if condition: The general Python if-else syntax is #If Statement if condition: code #elif Statement elif condition: code #Else Statement else: code There are 7 Types of operators in python including conditional operators.. Now, Let’s have a look at syntax : If-elif-else syntax. 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… a = 3 b = 2 if a==5 and b>0: print('a is 5 and',b,'is greater than zero.') The if…elif…else statement is used in Python for decision making. Now we are in main function, Enter any number: 6 Python syntax is almost the same as the pseudo-code written above. Python if else statement is a part of control structures (sometimes also known as Python flow control). The syntax of the if statement in Python is: print("Thanks!") There are 7 Types of operators in python including conditional operators.. Now, Let’s have a look at syntax : If-elif-else syntax. Many programming languages have a ternary operator, which define a conditional expression. These are its different forms. The provided number is less than 5 Armed with the knowledge of conditional statements such as if, if-else and nested if, you will be able to logically make decisions with the program and get correct results. Python if else statement works by evaluating a condition and subsequently making the decision. If you want to execute some line of code if a condition is true, or it is not. Rememeber, to indicate a block of code in Python, you must indent each line of the block by the same amount. "If" can be understood as metaphorical English "what if" which most people use in their day to day life. Form 1- using if. statements-2, # else block starts, notice the indentation, # if..else block ends, notice the indentation, Enter any number: 6 I will not go into details of generic ternary operator as this is used across Python for loops and control flow statements. The basic syntax is: statements-2 else: In this example, statements-3 will be considered outside the if block and will be executed irrespective of the if condition Return value. if condition: block_of_code If statement flow diagram. What is indentation? These decisions are made based on the input conditions and by looking at what to do in that situation. The syntax of an If Else Statement is the following: if condition: # statements to execute when the conditions are met are inserted here else: # Statements to be executed when the conditions are not met. if code == 'Tokyo': Python if else statement syntax. Exiting elif block if and else are in line of indentation while the statements inside if block and else block are in next possible indentation. Syntax of Python if .. elif .. else statement if test_expression1: statements(1) elif test_expression2: statements(2) elif test_expression3: statements(3) else: statements(4) As seen in above syntax, we can check multiple test_expressions to make decisions in if .. elif .. else statements. Syntax of If statement in Python. As you can see above, all if-else conditions have two statements and a condition written. We are loaded with numerous examples from across the globe on usage of if. The demonstration examples use random number. The provided number is greater than 5 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. 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 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 Now if we wish to write this in one line using ternary operator, the syntax would be: value_when_true if condition else value_when_false. The if else conditional statement in Python can be written in many ways. Learn: Operators in Python. Now we are in main function, if condition: 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? ") Example 2: Python If-Else Statement with AND Operator. Python uses indentation to determine how a line, or group of lines, is related to the rest of the program. THE CERTIFICATION NAMES ARE THE TRADEMARKS OF THEIR RESPECTIVE OWNERS. Short Hand if-else statement. IF ELSE syntax for the Django template is slightly different.If is the builtin tag in Django templates. You can also go through our other suggested articles to learn more, Python Training Program (36 Courses, 13+ Projects). 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. Otherwise the else code executes. You have entered the if block It is possible that we have more than 2 conditions, in such case we can use if..elif..else condition. Syntax. Another fragment as an example: if balance < 0: transfer =-balance # transfer enough from the backup account: backupAccount = backupAccount-transfer … The syntax of an If Else Statement is the following: if condition: One line if statement in Python (ternary conditional operator) Published: Thursday 31 st January 2013. You have entered the elif block It allows us to check for multiple expressions. default sequence of statements, # elif block starts, notice the indentation, # if..elif..else block ends, notice the indentation, Enter any number: 5 The provided number is greater than 5 else: The provided number is less than 5 Decision making is one of the most basic requirement of any kind of programming language. Python if Statements. Here, after the if-block, we can have any number of elif blocks. Given below is the syntax of Python if Else statement. #If Statement if condition: code #elif Statement elif condition: code #Else Statement else: code If no true condition is found the statement (s) block under else will be executed. Most Python if statements look for a specific situation. This is the syntax of if-elif-else statement. Following is a flow diagram of Python if statement. Exiting else block The syntax of the if statement in Python is: 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 For example, deciding if the user is old enough to attend the exam or if the temperature is high enough to start the air conditioner or selecting the grade a student has passed with, etc. the condition) one by one and if a true condition is found the statement (s) block under that expression will be executed. else: 2. The existing syntax which I showed above can be used, the only important point to note is that you must use proper indentation within the blocks or else you may get indentation error. Now we are in main function, Enter any number: 4 Exiting nested if block The syntax to use if..elif..else statement would be: The syntax is explained in the form of a flowchart with single if..elif..else statement. Syntax: statement_when_True if condition else statement_when_False if 2 > 1: print ('condition is true') else: print ('condition is false'). A program statement that can alter the flow of execution is called a Control Statement. else: Last Updated: Wednesday 31 st December 2014. The Syntax of an If Else. The provided number is less than 5 if test_expression: statement(s) to execute else: statement(s) to execute. if age>=18 : if Boolean-condition-statement: statements to be executed when the Boolean-condition-statement is true This article describes the Python if-else statements in detail. Python If-Else is an extension of Python If statement where we have an else block that executes when the condition is false. else : print("You have failed the test.") 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). In the above case Python evaluates each expression (i.e. If the indentation is not followed properly then you may get an ", Unlike some of the other programming language we do not have a closing function for the, So indentation is important, anything under this ", Here we have a single conditional check and if the condition returns, If the provided number is less than 5, then the condition will return, From the syntax you can understand the benefit we get with, We will continue to use our existing example, and we will add one additional, Next provide indentation of all the statements in the, Now if the provided number is greater than 5, then the if condition returns, But if the provided number is less than 5, then if condition returns. It’s powerful, flexible, and most importantly, extremely easy to read. We have added that to make sure, user is allowed to enter only integers. The syntax of if statement in Python is pretty simple. Then, fill another specified action under the else statement. If the condition is not met, the code below it is not executed and the program executes statement in the Else block. Python: if-, elif- und else-Befehl - einfach erklärt. We can easily do that using if-else statement. Else statement executes a code if the conditional expression in a if-statement is 0 or a FALSE. Output (if condition for if block returns True): Output (if condition for elif block returns True): Output (if condition for both if and elif block returns False): We can add nested if..elif..else statement inside if..elif..else blocks. if Statement . If the simple code of block is to be performed if the condition holds true than if statement is used. Python if else in one line Syntax. where ‘el’ abbreviates as else and ‘if ‘ represents normal if statement. This can be used to write the if-else statements in a single line where there is only one statement to be executed in both if and else block. Python: if-, elif- und else-Befehl - einfach erklärt. You have entered the if block Indentation is used to separate the blocks. However in this guide, we will only cover the if statements, other control statements are covered in separate tutorials. A Python Program to check whether the applicant is eligible to vote in the elections or not : age = int (input(" Please enter the age of applicant:  ")) if condition: block_of_code The basics are simple: You have: an if keyword, then; a condition, then; a statement, then; an else keyword, then; another statement. statements-3, # if block starts, notice the indentation, Enter any number between 1-10: 6 Python Conditions and If statements. An if statement in python takes an expression with it. Never miss the colons at the end of the if and else lines!2. More often, decision making is required to execute a certain piece of code if a particular condition is true. if condition: do this else: do that. The provided number is greater than 5 Examples to Implement else if Statement in Python. Exiting nested if..elif block Let’s take a look at the syntax, because it has pretty strict rules. Now we are in main function. Let’s take a look at the syntax, because it has pretty strict rules.The basics are simple:You have: 1. an if keyword, then 2. a condition, then 3. a statement, then 4. an else keyword, then 5. another statement.However, there are two things to watch out for:1. Other decision-making statements in Python are the following: As you can see in the flowchart above, the condition in an if-else statement creates two paths for the program to go on. The elif is the shorthand for else if. The syntax of if statement in Python is pretty simple. Let us see at various python decision making expressions in details with syntax and example. If the condition is not true, then skip the indented statements. The provided number is equal to 5 If the condition for if statement is False, it checks the condition of the next elif block and so on. This can be used to write the if-else statements in a single line where there is only one statement to be executed in both if and else block. Once the limitations have been defined, the code’s body will only run when the ‘If’ statement is true. print(" The applicant is eligible to vote in the elections " ); For now if you are not familiar with try and except, you can ignore that function. A conditional statement in Python is handled by if statements and we saw various other ways we can use conditional statements like Python if else over here. 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. Syntax of if…else if expression: block_of_code_1 else: block_of_code_2 In Python, if statement informs the program what to do if the condition is true. Here we will concentrate on learning python if else in one line using ternary operator . Syntax: statement_when_True if condition else statement_when_False. Python if-else statement is used in cod for decision making. Exiting if block In this Python example, we will learn about Python If statement syntax and different scenarios where Python If statement can be used.. The if else conditional statement in Python can be written … Now we are in main function, Enter any number: 3 The provided number is equal to 4 or 5 In the if condition, test expression is evaluated. Unlike Java or C, which look like Martian hieroglyphics, Python looks almost like English. 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. Observe the indentation for the lines after if keyword and else keyword. if condition: do this else: do that. sequence of statements-1 In this way, a if-else statement allows us to follow two courses of action. The if..else statement evaluates test expression and will execute the body of if only when the test condition is True. statements-2 From the syntax you can understand the benefit we get with if..else statement, if the condition returns True then the if block is executed but if the condition returns False then else block will be executed instead of going to the main script 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. Python If Else Statement is logical statements. In this tutorial we learned about if..elif..else statement used in Python programming language. So in this tutorial we will learn about python if else statement along with their respective syntax using multiple examples. 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Linux, Cloud, Containers, Networking, Storage, Virtualization and many more topics, if condition: the colon ( ‘ : ‘ ) is used to mention the end of condition statement being used. For a single condition case, specify the case condition after the if statement followed by a colon (:). The syntax to use python if..else statement would be: if condition: statements-1 else: statements-2. Syntax Explained First, lets look at Pythons if statement code block.