Nameerror name df is not defined [SOLVED]

Are you stuck with this Python nameerror name df is not defined error message?

We understand that this error be frustrating, especially if you don’t know how to fix it.

In this article, we will explore the what nameerror: name ‘df’ is not defined error is and why it occurs.

And we’ll guide how you can fix this error.

What is “nameerror name df is not defined”?

The nameerror: name ‘df’ is not defined error message is raised when you try to access the df (DataFrame) variable or object that has not been defined in your code.

This error message indicates that the interpreter could not find the variable or object you are trying to access.

The reason is that the variable or object has not been defined yet, or because it has been defined in a different part of your code.

Why does this error occur?

The nameerror name ‘df’ is not defined error message can occur or several reasons, including:

❌ The variable or object has not been defined yet.

❌ If you are accessing a df variable that doesn’t exist.

❌ Using a df variable before it is declared.

❌ The variable or object was defined in a different part of your code.

❌ The variable or object was misspelled or typed incorrectly.

❌ The variable or object was deleted or removed from your code.

How to fix “nameerror name df is not defined”?

To fix the nameerror: name ‘df’ is not defined, ensure to declare the df or define the variable before accessing it.

Solution 1: Define the variable before accessing it

To fix this error, you need to define the variable or object before you try to use it.

For example:

✅ df = 100
print(df)

Output:

Solution 2: Pass the Variable or Object

If you are trying to use a variable or object from a library or module, you need to import it first. Make sure that you have imported the library or module correctly.

For example:

✅  import pandas as pd
df = pd.DataFrame({'A': [1, 2], 'B': [3, 4], 'C': [5, 6], 'D': [7, 8]})

print(df)

Output:

A B C D
0 1 3 5 7
1 2 4 6 8

When the variable or object is defined in a different part of your code, you can pass it as an argument to the function where you are trying to use it.

Solution 3: Check for typos

Ensure that you have not misspelled the variable name when declaring or accessing it.

Solution 4: Verify the variable scope

If you have declared the df variable inside a function, make sure that you are accessing it within the same function.

Conclusion

The nameerror: name ‘df’ is not defined error message is raised when you try to access the df (DataFrame) variable or object that has not been defined in your code.

To fix the error you have to declare the df or define the variable before accessing it.

This article already provides solutions for this error to help you fix the Python error message.

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

Nameerror name ‘x’ is not defined

Hoping that this article helps you fix the error. Thank you for reading itsourcecoders 😊