NameError: Name 'sys' is not defined ( Solved )

Are you getting the NameError: name ‘sys’ is not defined error? If yes then this post is for you. In this post, you will learn the cause of this error and how to solve it quickly.

What is the sys module?

The sys module allows you to interact with the python and operating system. To do so it provided you access to many systems parameters and functions. Most of the functions are used for Runtime Environment, Standard Streams, Exit Function etc. I am not going in detail for each of the functions.

In the next section you will know why this error occurs and how to solve it.

Why NameError: name ‘sys’ is not defined Error occurs?

The main or root cause for getting this nameerror is that you are using the sys function without importing it in your python file. Without importing the Python interpreter throws an exceptions.

You will get the error when you run the below lines of code.

print(sys.version)

Output

Solve name ‘sys’ is not defined Error

You can easily solve name ‘sys’ is not defined Error. You are getting the errorr as you have not import the sys module. Therefor before using the sys.version you have to import sys using the import statement.

Now you will not get the error when you run the below lines of code.

import sys
print(sys.version)

If you are still getting the error then make sure the sys module is installed or not. Also, reinstall python and verify the environment variables for Python and its packages.

Conclusion

The sys module allows you to interact with Python with the operating system. You can get the NameError: name ‘sys’ is not defined error when you will use the sys functions without importing it. The above is the solutions for this error.

I hope you have liked this tutorial. If you have any queries then you can contact us for more help.