Nov 17, 2014 · Your specific issue of NameError: name 'guess' is not defined is because guess is defined in your main function, but the while loop that it is failing on is outside of that function.

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.

The NameError: name 'X' is not defined error is a fundamental error in Python, and it always indicates a problem with variable scope, definition, or import. By carefully checking variable …

Jul 2, 2020 · You execute your Python program and you see an error, "NameError: name ... is not defined". What does it mean? Let's see how you can quickly fix it.

Apr 11, 2025 · In this blog, we will delve deep into the concept of `NameError: name is not defined` in Python, explore its common causes, provide code examples, and discuss best …

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 23, 2025 · Encountering the "NameError: name 'var' is not defined" is a common experience for Python users. In Python, variable declaration is a straightforward process of assigning a …

Feb 2, 2024 · We will also learn how to fix the NameError: name 'python' is not defined when we call Python inside the interpreter instead of the terminal in Python. Sometimes we encounter a …

Python does not have any way to forward declare classes or methods so the only option is to put the invocations of functions at the end of the program rather than the beginning. The other …

Feb 23, 2025 · Learn about Python NameError: Name is Not Defined, its causes, and how to fix it. Suitable for beginners with examples and solutions.