Virtualenv modulenotfounderror no module named pip._vendor.six

by adjusting `PYTHON_PATH’ if needed.)

Python "No Module Named Pip" Error: Understanding, Fixing, and Best Practices

Introduction

Python is a widely used high-level programming language known for its simplicity and versatility. You can update using the following command:

Common Practices with

Installing packages

To install a Python package using , simply run the following command in the terminal:

For example, to install the package:

Installing packages for a specific Python version

If you have multiple Python versions installed on your system, you can specify which Python version to use when installing packages.

I cannot contribute a bug fix at this time.

When I try to run an MLFlow project based on pyenv+virtualenv, I get the following error and the run stops:

I think the error may be related to coming without a module bundled (see https://bnikolic.co.uk/blog/python/pip/2022/02/21/vendored-six.html ). - Python Environment Configuration: Incorrect environment variables or paths can lead to Python not being able to locate the module.

Run the following command:

If you get the "No module named pip" error, it means is either not installed or not properly configured.

Solutions for the Error

Reinstalling on Different Operating Systems

Windows

  1. Download : Go to the official website and download the script.
  2. Run the script: Open the command prompt as an administrator.

    Easy way to do this is:

    Other option is to install the required packages through an alternative mechanism (e.g., ) and ensure that this installation is visible to the version of Python that you are using (e.g.


    Then run the following command:

Linux

  1. For Debian and Ubuntu:
    • Update the package manager:
  1. For Fedora:

macOS

  1. Using Homebrew: If you have Homebrew installed, run the following command:

This will install Python 3 along with .

Updating

Once is installed, it's a good practice to keep it up-to-date.

For example, if the Python installation directory is not added to the system's variable.

Implications of the error

Without a properly functioning , developers cannot install new Python packages. This could be due to interrupted installations or issues with the installer.

ModuleNotFoundError: No module named 'pip._vendor.six'

I'm new to Ubuntu (20.04.2.0 LTS) and trying to get Python3.9.6 and Pip to work with Virtualenv.

I hope some of you experienced Ubuntu users can help me :)

I have no problem using default Python (3.8.10):

These steps work without any problems, but if I do the same steps for Python3.9.6 (from source), it will not work:

Tried to find information about the error but could not find a solution.

If any of you have had the same problem or recognize the problem and would like to help me, I am grateful for all the help I can get.

Best regards, /Mikael

asked Jul 10, 2021 at 19:43

Usagi-Dev

6311 gold badge11 silver badge33 bronze badges

No.

It's best to use virtual environments for each project. By following the solutions and best practices outlined in this blog post, developers can ensure a smooth and efficient Python development experience. For example, if you want to install a package for Python 3.8:

Creating and managing virtual environments

Virtual environments allow you to isolate your Python projects and their dependencies.

This blog post aims to demystify this error, provide solutions, and share best practices related to handling in Python.

Table of Contents

  1. Understanding the "No Module Named Pip" Error
    • What causes the error?
    • Implications of the error
  2. Checking Python Installation and Availability
    • Verifying Python installation
    • Checking version
  3. Solutions for the Error
    • Reinstalling on Different Operating Systems
    • Updating
  4. Common Practices with
    • Installing packages
    • Installing packages for a specific Python version
    • Creating and managing virtual environments
  5. Best Practices with
    • Using requirements files
    • Keeping and packages up-to-date
    • Avoiding global installations
  6. Conclusion
  7. References

Understanding the "No Module Named Pip" Error

What causes the error?

The "No module named pip" error typically occurs when Python cannot find the module.

To install the packages listed in the requirements file on another system, run:

Keeping and packages up-to-date

Regularly update and your installed packages to ensure security and compatibility. You can generate a requirements file using the following command:

This will create a file with a list of all the installed packages and their versions.

This can occur if the installation process was aborted midway or if there were permission issues during installation. Issue is, the I have installed does come bundled with , and I get the error only when running an MLFlow project.

Note that if I run the project with then the project runs OK. Also, I can make a virtualenv myself with from the shell, that works as expected, e.g.

I have a different system running Ubuntu 22.04, and on that I cannot reproduce the problem.

What component(s) does this bug affect?

  • : Artifact stores and artifact logging
  • : Build and test infrastructure for MLflow
  • : MLflow documentation pages
  • : Example code
  • : Model Registry service, APIs, and the fluent client calls for Model Registry
  • : MLmodel format, model serialization/deserialization, flavors
  • : Recipes, Recipe APIs, Recipe configs, Recipe Templates
  • : MLproject format, project running backends
  • : MLflow Model server, model deployment tools, Spark UDFs
  • : MLflow Tracking server backend
  • : Tracking Service, tracking client APIs, autologging

What interface(s) does this bug affect?

What language(s) does this bug affect?

What integration(s) does this bug affect?

How to fix?

Occasionally when manipulating complex Python setups users may encounter the error message:

The reason for this message as follows:

  1. The package uses the package (and a number of other, third party packages)
  2. These packages can be bundled with pip, in which case it is copied into the module
  3. Or the package could be supplied through another mechanism, such as the system-wide package management (e.g., , `dnf’, etc).
  4. The choice between (2) or (3) is made within the source code of itself: if the DEBUNDLED variable is set, pip will try to install the system-wide packages and the module will be empty

The error message above is seen if pip is DEBUNDLED (i.e., 3 is true) and if the required six package is not in fact available trough that other mechanism.

Simplest option is to install a BUNDLED version of .

Navigate to the directory where you downloaded using the command. This restricts the ability to use external libraries and frameworks that can significantly enhance the functionality of Python applications. If it does not, then Python may not be installed correctly, and you need to reinstall it.

Checking version

If Python is installed correctly, you can try to check the version.