W3Schools
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Python If Statement
The if statement evaluates a condition (an expression that results in True or False). If the condition is true, the code block inside the if statement is executed. If the condition is false, the code block is skipped. ... Python relies on indentation (whitespace at the beginning of a line) to define scope in the code.
Programiz
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Python if, if...else Statement (With Examples)
In this case, Python thinks our if statement is empty, which results in an error. An if statement can have an optional else clause. The else statement executes if the condition in the if statement evaluates to False. ... True - the body of if executes, and the body of else is skipped. False - the body of else executes, and the body of if is skipped · Let's look at an example.
python - Use and meaning of "in" in an if statement? - Stack Overflow
In an example from Zed Shaw's Learn Python the Hard Way, one of the exercises displays the following code: next = raw_input("> ") if "0" in next or "1" in next: how_much = int(next) I'm having a hard time understanding the meaning of in in this statement. I'm used to using if statements, such as in javascript, where the syntax ... More on stackoverflow.com
Question on how If statements and 'or' work in python
You are correct that each piece of your statement must be treated separately. I know of no programming language in which "if test[0] or test[1] == 1" will test both test[0] and test[1] against the value 1. Python will see if test[0] is "truthy", and then see if "test[1] == 1" is truthy. The second case is obvious. A value is truthy if it is true, if it is not zero, and if it is not an empty string. So, if test[0] = 'a' and test[1] = 1, then "if test[0] and test[1] == 1" will return true. (note that I changed "or" to "and" for that example.) More on reddit.com
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January 12, 2022understanding if statements in Python
7.0 == number <= 8.0 is equivalent to 7.0 == number and number <= 8.0. This condition will fail if the number is anything other than 7.0. On the other hand, 7.0 <= number <= 8.0 is equivalent to 7.0 <= number and number <= 8.0. This is the correct to way to check if a number is within a range using this syntax. FYI, the conditional statement already returns a boolean. Therefore, you can simply return the condition to reduce redundancies: def check_numbers(number): return 7.0 <= number <= 8.0 More on reddit.com
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January 4, 2024return if else else if in one line
Why are you wanting to have it as one line. Reduces readability and makes it more complicated to fix. What you should be able to do is to have a nested statement. Run the first expression, else if the second expression passes use statement2 return statement1 if expression1 else (statement2 if expression2 else statement3) You could continue nesting if you wanted More on reddit.com
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August 8, 2021Videos
If Else Statements in Python | Python for Beginners
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If Statements in Python (Conditional Logic) (IF, ELIF, ELSE) - YouTube
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If statements in Python are easy (if, elif, else) 🤔 - YouTube
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The if-else Statement in Python - YouTube
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If Statements | Python Programming Ep. 14 - YouTube
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Python Tutorial #14: if statements 🐍 - YouTube
Mimo
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Python If Statement: Master Conditional Logic | Learn Coding
... def check_temperature(temp): if temp > 30: return "It's a hot day." elif temp > 20: return "It's a nice day." else: return "It's cold." print(check_temperature(25)) # "It's a nice day." In Python, some non-boolean values evaluate to True or False, too. Such "truthy" or "falsy" values can ...
Dataquest
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How to Use IF Statements in Python (if, else, elif, and more) – Dataquest
November 24, 2024 - We are pretty free to decide what conditions and expressions can be because Python is very flexible. Let’s look at a concrete example. # Basic if statement x = 3 y = 10 if x < y: print("x is smaller than y.")
Python documentation
docs.python.org › 3 › tutorial › controlflow.html
4. More Control Flow Tools — Python 3.14.3 documentation
There can be zero or more elif parts, and the else part is optional. The keyword ‘elif’ is short for ‘else if’, and is useful to avoid excessive indentation. An if … elif … elif … sequence is a substitute for the switch or case statements found in other languages.
Simplilearn
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If Else Statement in Python: Syntax and Examples Explained
April 16, 2025 - The if-else statement is used to execute both the true part and the false part of a given condition. If the condition is true, the if block code is executed.
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Tutorialspoint
tutorialspoint.com › python › python_if_statement.htm
Python - if Statement
The below diagram shows flowchart of the if statement − · Let us consider an example of a customer entitled to 10% discount if his purchase amount is > 1000; if not, then no discount is applicable.
GeeksforGeeks
geeksforgeeks.org › python › python-if-else
Python If Else Statements - Conditional Statements - GeeksforGeeks
September 16, 2025 - if...else statement is a control statement that helps in decision-making based on specific conditions. When the if condition is False. If the condition in the if statement is not true, the else block will be executed. ... Let's look at some examples of if-else statements.
Berkeley
pythonnumericalmethods.studentorg.berkeley.edu › notebooks › chapter04.01-If-Else-Statements.html
If-Else Statements — Python Numerical Methods
EXAMPLE: What will be the value of y after the following code is executed? x = 3 if x > 1 and x < 2: y = 2 elif x > 2 and x < 4: y = 4 else: y = 0 print(y) ... Note that if you want the logical statement a < x < b, this is two conditional statements, a < x and x < b. In Python, you can type ...
freeCodeCamp
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Python Else-If Statement Example
July 1, 2022 - The general syntax for an if statement in Python is the following: if expression: #run this code if expression evaluates to True code statement(s) ... You start the if statement using the if keyword.
Real Python
realpython.com › python-conditional-statements
Conditional Statements in Python – Real Python
January 18, 2024 - If none of the expressions are true, and an else clause is specified, then its suite is executed: ... if <expr>: <statement(s)> elif <expr>: <statement(s)> elif <expr>: <statement(s)> ...
Python Basics
pythonbasics.org › if-statements
If Statements Explained - Python Tutorial
The if statement may be combined with certain operator such as equality (==), greater than (>=), smaller than (<=) and not equal (!=). Conditions may be combined using the keywords or and and. Related course: Complete Python Programming Course & Exercises · In the example below we show the use if statement, a control structure.
GeeksforGeeks
geeksforgeeks.org › python › conditional-statements-in-python
Conditional Statements in Python - GeeksforGeeks
If age >= 18 is True, status is assigned "Adult". Otherwise, status is assigned "Minor". match-case statement is Python's version of a switch-case found in other languages.
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Python Tutorial
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An Essential Guide to Python if Statement By Practical Examples
March 26, 2025 - The following flowchart illustrates the if statement: ... age = input('Enter your age:') if int(age) >= 18: print("You're eligible to vote.")Code language: Python (python) ... This example prompts you to input your age.
Luc
anh.cs.luc.edu › handsonPythonTutorial › ifstatements.html
3.1. If Statements — Hands-on Python Tutorial for Python 3
Be careful of the strange Python contraction. It is elif, not elseif. A program testing the letterGrade function is in example program grade1.py. See Grade Exercise. A final alternative for if statements: if-elif-.... with no else. This would mean changing the syntax for if-elif-else above so the final else: and the block after it would be omitted.
DigitalOcean
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How to Use If/Else Statements in Python: A Beginner’s Guide | DigitalOcean
March 7, 2025 - If the if statement is true, the elif and else blocks will be skipped. If the if statement is false, the elif block will be executed. If the elif statement is false, the else block will be executed. Here’s an example of how to use if, elif, and else in Python:
Tutorialspoint
tutorialspoint.com › python › python_if_else.htm
Python if-else Statement
Now, let's see the Python implementation the above flowchart. age=25 print ("age: ", age) if age >=18: print ("eligible to vote") else: print ("not eligible to vote") On executing this code, you will get the following output − ... To test ...
Top answer 1 of 8
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It depends on what next is.
If it's a string (as in your example), then in checks for substrings.
>>> "in" in "indigo"
True
>>> "in" in "violet"
False
>>> "0" in "10"
True
>>> "1" in "10"
True
If it's a different kind of iterable (list, tuple, set, dictionary...), then in checks for membership.
>>> "in" in ["in", "out"]
True
>>> "in" in ["indigo", "violet"]
False
In a dictionary, membership is seen as "being one of the keys":
>>> "in" in {"in": "out"}
True
>>> "in" in {"out": "in"}
False
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Using a in b is simply translates to b.__contains__(a), which should return if b includes a or not.
But, your example looks a little weird, it takes an input from user and assigns its integer value to how_much variable if the input contains "0" or "1".
freeCodeCamp
freecodecamp.org › news › else-if-in-python-python-if-statement-example-syntax
Else-If in Python – Python If Statement Example Syntax
March 22, 2022 - In the if-else statement, we have two branches incase the statement is true or false. The if block is executed in case the expression is true. The else block is executed in case the expression is false.
Data Science Discovery
discovery.cs.illinois.edu › learn › Simulation-and-Distributions › Conditionals-in-Python
Conditionals in Python - Data Science Discovery
Many people consider 7 to be a lucky number. The Python code below uses an if statement to print out a message if Python randomly choose a lucky number: