In this post, we will discuss on how to resolve the attributeerror: ‘nonetype’ object has no attribute keys, what error means and what are the causes of error?
As a programmer, it is possible that you’ve encountered an AttributeError in your code.
One is AttributeError that can be frustrating to debug if the ‘NoneType’ object has no attribute ‘keys’ error.
Table of contents
What Causes the AttributeError: NoneType object has no attribute items Error?
The “AttributeError: NoneType’object has no attribute items error usually occurs if you are trying to access the ‘items’ attribute of a ‘NoneType’ object.
This commonly happens if you have a variable or object that should contain a value, yet it contains ‘None’.
Common causes of error
- It is possible that you assigned a variable to None and you are trying to access its
- Return value of a function
- It is possible you are passing a None object as a parameter to a function that expects a dictionary, you will get this error.
Also, read or visit the other resolved error in Python:
- attributeerror: module ‘collections’ has no attribute ‘callable’ [Solved]
- Attributeerror: module yaml has no attribute fullloader [SOLVED]
How to solve the AttributeError: ‘NoneType’ object has no attribute ‘keys’ Error?
Time needed: 3 minutes.
Here are some solutions to solve the ‘NoneType’ object has no attribute ‘keys’ error:
- Solution 1: Check for None values
The easiest solution to avoid this error is to check for None values before accessing their attributes.
For example, if you have a dictionary object which is None, you can check the following code:
my_dictionary = None
if my_dict is not None:
keys = my_dict.keys()
- Solution 2: Check for the return value of functions
If you are assuming a dictionary object as the return value of a function, you will make sure to check if the return value is not None before accessing its attributes.
result = dictionary()
if result is not None:
keys = result.keys()
- Solution 3: Use try-except statements
You can also use try-except statements to manage the ‘NoneType’ object has no attribute ‘keys’ error.
This solution is very useful if you can’t avoid None values in your code.
keys = my_dictionary.keys()
keys = None
In conclusion, the ‘NoneType’ object has no attribute ‘keys’ error is a common error that is possible you encounter when you are running a Python code.
It should occur for different reasons, like variable assignment mistakes, incorrect parameter passing, or return values of functions.
Through following the above solutions, you can solve this error and ensure that your Python code runs smoothly.