Nov 25, 2017 · However, whenever I try to find each items individual value, using for loops to get to each dictionary in the list, I receive an error claiming that keys are not defined, even though it just printed the dictionary entry for that grocery item, and all of the keys had values.

Mar 13, 2018 · However, every time I run it, it says that dictionary is not defined and I can not figure out why it doesn't want to work. I've indented the areas which need it and I have the correct modules imported but it still doesn't work. Any ideas on how to fix this would be helpful. list_to_remove = dictionary.keys() where is dictionary coming from?

Sep 28, 2020 · You have not defined any my_dict in line 24, that is why it is giving a name error. You shall add the line : my_dict = {} If you want your desired output.

Jul 2, 2020 · In this article I will explain you what this error is and how you can quickly fix it. 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).

The “NameError: name ‘X’ is not defined” occurs in Python when the operated variable or function is accessed before defining it or not defined in the program. To solve this error, the variable or function must be defined in the program before accessing.

Apr 14, 2025 · One of the most frequently seen errors is the NameError: name is not defined. This error indicates that Python is trying to reference a variable, function, or module that it cannot find in the current scope. Understanding this error is crucial for debugging Python code effectively and writing reliable programs.

In Python 3.6 and earlier, dictionaries are unordered. When we say that dictionaries are ordered, it means that the items have a defined order, and that order will not change. Unordered means that the items do not have a defined order, you cannot refer to an item by using an index.

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 you haven't misspelled the variable's name and access it after it has been declared.

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

Sep 25, 2023 · One common error that Python developers often encounter is the “KeyError”. In this article, we will explore what a KeyError is, why it occurs, and various methods to fix it. A ‘KeyError’ occurs when you try to access a key in a dictionary that doesn’t exist.