Sep 3, 2025 · Learn how to fix the Python error "NameError: name is not defined" with clear examples, causes, and solutions. Easy guide for beginners and professionals.

Feb 23, 2025 · Learn how to fix NameError in Python with clear examples and step-by-step solutions. Perfect for beginners encountering this common error.

Jul 15, 2025 · To specifically handle NameError in Python, you need to mention it in the except statement. In the following example code, if only the NameError is raised in the try block then …

Solution: Carefully check the spelling and capitalization of your variable, function, and class names. Modern IDEs are excellent at highlighting these errors. You must define a name …

Apr 8, 2024 · The Python "NameError: name is not defined" occurs when we try to access a variable or a function that is not defined or before it is defined. To solve the error, make sure …

Jul 2, 2020 · We will go through the creation of a program that prints the Fibonacci sequence and while doing that we will see 4 different ways in which the Python NameError can appear. First …

Here is the code that causes the problem: class Something: def out(): print("it works") This is being run with Python 3.3.0 under Windows 7 x86-64. Why can't the Something class be …

Jan 23, 2025 · One of the most common errors in Python is the NameError. This blog post aims to provide a detailed exploration of NameError in Python, including its fundamental concepts, …

May 16, 2023 · A Python NameError is raised when the program attempts to use a variable that has not been defined. Learn how to fix it.

Python requires that any name (variable, function, class, module) must be defined or imported before it can be used. When the interpreter encounters a name it hasn't seen before in the …