Modulenotfounderror: no module named ‘numpy.testing.nosetester’

This error, modulenotfounderror: no module named ‘numpy.testing.nosetester’, happens because of version incompatibility. If you are having a hard time figuring out how you are going to fix this, don’t worry!

In this article, we are going to show you the possible yet effective solutions that will resolve the error that’s giving you a headache. Continue to read on to learn how to fix this error: no module named numpy.testing.nosetester.”

What is modulenotfounderror: no module named ‘numpy.testing.nosetester’?

ModuleNotFoundError: No module named 'numpy.testing.nosetester'

This error modulenotfounderror: no module named ‘numpy.testing.nosetester’ happen because of version incompatibility among numpy and scipy. numpy.

For this reason in the latest version of numpy, the numpy.testing.nosetester is being deprecated.

What are the causes of modulenotfounderror: no module named ‘numpy.testing.nosetester’?

  • 1. Missing or outdated numpy installation
  • If the “numpy  module is missing in the Python environment. Definitely, Python interpreter is unable to find the required module which results in an error.
  • 2.Incorrect import statement
  • If the import statement is incorrect “numpy.testing.nosetester” module unable to be found. Ensure that you’re using the correct syntax, for example: import numpy.testing.nosetester.
  • You should make sure that you are importing the correct spelling of the module.
  • 3.Incompatible version
  • If you are using a different version of Python and the module you want to import is in a different version, an error will arise. The reason is that it is not compatible with the version of the numpy  module you are using.
  • 4. Virtual environment issue
  • When you install the module or the package globally and not in your virtual environment. Certainly, in this error modulenotfounderror: no module named ‘numpy.testing.nosetester occurs.

How to fix modulenotfounderror: no module named ‘numpy.testing.nosetester’?

Time needed: 2 minutes.

Here are the effective solutions to fix the modulenotfounderror: no module named ‘numpy.testing.nosetester’ error.

  1. Upgrading or reinstalling NumPy

    This error can be fixed by upgrading the numpy library using the following command:

     pip install –upgrade numpy

  2. Install numpy

    If you don’t have numpy installed, you can install it using this command:

    pip install numpy

  3. Upgrade modules

    When you are using numpy with scipy and scikit-learn libraries, you need to upgrade each library to resolve this error. You may use the following commands:

    pip install -U numpy
    pip install -U pandas
    pip install -U scipy

  4. Check the import statement

    Double-check the import statement, ensure that you are using the correct import statement to access the “numpy.testing.nosetester” module.

Additional possible solutions for modulenotfounderror: no module named ‘numpy.testing.nosetester’

1. Upgrading scipy to a higher version.

For example:

  • pip install numpy==1.24
  • pip install scipy==1.2.0
  • pip install scikit-learn = 1.2.2

2. If you are using Linux, you may use this command:

  • sudo pip3 uninstall numpy

Upgrading into a higher version

For example:

  • sudo pip3 install numpy==1.24
  • sudo pip3 install scipy==1.2.0
  • sudo pip3 install scikit-learn==1.2.2

Note: By upgrading the above libraries to the latest version, you can be able tof ix this error.


The modulenotfounderror: no module named ‘numpy.testing.nosetester’ can be resolved by upgrading the required module. By executing the effective solutions that this article already provides, you will resolve the error that you are facing.

We also have solutions if you encounter an error like “modulenotfounderror: no module named ‘pyspark.pandas”. You can also visit our website for additional information.

Thank you very much for reading until the end of this article. Just in case you have more questions or inquiries, feel free to comment.

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