Nameerror: name 'a' is not defined [SOLVED]

In this article, we will show you how to fix Python’s nameerror: name ‘a’ is not defined error message.

This error is easy to fix however, if you’re new to this definitely, it is quite hard for you to solve it.

Fortunately, this article will help you solve the nameerror name a is not defined in simple yet effective solutions.

What is “nameerror name a is not defined”?

The error message nameerror: name ‘a’ is not defined when we are trying to use a variable or function named “a,” but “a” is not yet defined or declared.

This error occurs when the Python interpreter encounters a reference to a variable or function that doesn’t exist in the current scope.

For example:

sample = a + b
print(sample)

As you can see in this code, we’re trying to add the value of the variable “a” to the variable “b” and assign the result to sample. However, since we haven’t defined the variable a, the Python interpreter raises a Name Error indicating that the name ‘a’ is not defined error.

Why does this error occur?

This error message occurs due to some reason, such as:

❌Forget to define the variable

❌Misspelled the variable or function Names

❌Typo in Function Arguments

❌Trying to use a variable before it has been assigned a value.

How to fix the “nameerror: name ‘a’ is not defined”?

To fix this error, you need to make sure that the variable “a” is defined before it is used in the code.

Solution 1: Define the variable

Here, we define the variable “a” and assign it the value of 10 before using it in the print statement. It ensures that “a” is defined.

For example:

✅a = 10
b = 20
sample = a + b
print(sample)

Output:

Solution 2: Use a default value

Alternatively, you can use a default value for a variable if it is not defined. In this example, we assign the value None to the variable a before using it in the print statement.

✅a = None
print(a)

Output:

None

Solution 3: Check for typos

Usually, this error can occur due to a simple spelling mistake. Ensure that you are using the correct spelling.

Conclusion

The error message nameerror: name ‘a’ is not defined when we are trying to use a variable or function named “a,” but “a” is not yet defined or declared.

This article discusses what this error is all about and already provides solutions to help you fix this error.

You could also check out other “nameerror” articles that may help you in the future if you encounter them.

Nameerror: name ‘train_test_split’ is not defined

We are hoping that this article helps you fix the error. Thank you for reading itsourcecoders 😊

Nameerror: name ‘a’ is not defined