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. Your indention is entirely wrong for this application.

Sep 5, 2016 · I am trying to define a basic function in python but I always get the following error when I run a simple test program; >>> pyth_test(1, 2) Traceback (most recent call last): File "<pyshell#2>", line 1, in <module> pyth_test(1, 2) NameError: name 'pyth_test' is not defined Here is the code I am using for this function;

Jul 2, 2020 · What causes a Python NameError? The Python NameError occurs when Python cannot recognise a name in your program. A name can be either related to a built-in function or to something you define in your program (e.g. a variable or a function).

General recommendation: avoid global variables. Write functions, not procedures. Python programmers commonly use 4 spaces for indentation. –

Feb 12, 2024 · There are many reasons to get the NameError: function is not defined in Python, and we will discuss the most common reason for getting this error. When we call the function before defining it in our program, the Python interpreter cannot find the function definition.

Feb 19, 2024 · How to fix NameError: name is not defined in Python. 1. How to solve NameError in Python by checking for name existence; 2. NameError: name ‘error’ is not defined in Python by try-except block; 3. NameError name is not defined in Python 3 by providing default values: 4. Check before the NameError in Python occurs; Conclusion

Jun 21, 2024 · The 'Variable not defined' error is a common stumbling block for Python developers, but it can be resolved with careful attention to detail. By understanding the scope of variables, ensuring proper imports, and checking for typographical errors, you can effectively prevent and fix this issue.

Feb 23, 2025 · What is a NameError? A NameError occurs when Python tries to use a variable or function that hasn't been defined yet. This can happen for several reasons. For example, you might have misspelled a variable name or forgotten to define it. Understanding why this error occurs is crucial.

Feb 2, 2024 · This article will discuss the causes of NameError in Python and how to fix the particular error NameError: Variable is not defined. Scope of Variables in Python Scope of variables implements accessibility constraints on variables that either can be accessed out of a specific block or not.

21 hours ago · NameError: name 'a' is not defined. In Python, you can catch all such errors and exceptions by wrapping the code in a try-except block. try: print(a) except NameError: print("a is not defined") else: print("a is defined") In the above code, we have written the print() function inside try block. If the variable a is not defined, then this ...