Mastering Troubleshooting Error “Subprocess-Exited-with-Error”
When running a Python script, you might come across an error that reads “subprocess-exited-with-error.” This error is usually associated with package installation or upgrade issues. Luckily, there are several ways to troubleshoot this error.
Here we will cover several options that have been proven to work for many people who encountered this problem. Upgrade pip, setuptools, and wheel
The first thing to try is to upgrade pip, setuptools, and wheel.
These three tools are essential for the correct functioning of virtual environments and package installation. To upgrade them, simply run the following command:
pip install –upgrade pip setuptools wheel
This command upgrades these three tools to their latest versions, which might fix the problem. Downgrade to pip version 21.3.1
If upgrading pip, setuptools, and wheel did not resolve the issue, try downgrading pip to an earlier version.
Specifically, try using pip version 21.3.1 by running the following command:
pip install pip==21.3.1
This version has been known to work well for some people, so give it a try if upgrading did not help.
Use –use-deprecated-legacy option when installing a package
Another option to consider is to use the –use-deprecated-legacy flag when installing a package, as follows:
pip install package-name –use-deprecated-legacy
This option uses an older version of pip that might be more compatible with the package you are trying to install.
Check for supported Python version
Make sure the Python version you are using is supported by the package you are trying to install. Some packages only work with specific versions of Python, so make sure to check their documentation for details.
Check for missing package or misspelling
Double-check that you have correctly spelled the package name and that it is installed. If the package is not installed, install it using pip.
You can also use pip freeze to check which packages are installed and their version numbers. Install Visual C++ build tools on Windows
Windows users might encounter this error due to missing Visual C++ build tools.
To fix this, download and install the latest version of Microsoft’s Visual C++ Build Tools from their website.
Install a module with the –pre option
If none of the above solutions worked, you can try installing the module using the –pre option. This option installs the pre-release version of the module, which might fix compatibility issues.
Simply run the following command:
pip install module-name –pre
This installs the pre-release version of the module, which might have fixed the issue.
Creating and Activating a Virtual Environment
A virtual environment is a self-contained Python environment that allows you to install packages specific to a project. This ensures that each project has its own packages, and any conflicts between packages are avoided.
Here is how to create and activate a virtual environment:
Create a virtual environment:
To create a virtual environment, navigate to your project directory and run the following command:
python -m venv myenv
This command creates a new virtual environment named myenv. You can replace myenv with any name of your choice.
Activate the virtual environment:
After creating a virtual environment, you need to activate it by running the following command:
If you are using Windows OS, you can activate the virtual environment by running the following command:
Install packages in a virtual environment:
After activating your virtual environment, you can easily install packages by running pip install followed by the package name. The packages will be installed in your virtual environment’s version of Python.
In this article, we have covered several methods to troubleshoot the “subprocess-exited-with-error” error in Python. We have also provided an overview of virtual environments and how to create and activate them.
By following the steps outlined above, you will be able to enjoy smooth package installation and avoid conflicts between packages in your projects.
Using Multiple Python Versions
When working on different projects, you may need to use different versions of Python. Luckily, Python offers multiple ways to manage different Python versions on the same machine.
Check Python version
Before installing any packages, it’s essential to ensure that you are using the correct version of Python for your project. To check your current Python version, open a terminal window and run the following command:
This command will display the installed Python version.
Install package with correct pip version
If you need to use a specific Python version for a project, install packages using the corresponding pip version. To do this, you need to know the pip version that corresponds to the Python version you are using.
For example, if you are using Python 3.6, the pip version should be pip3.6.
To install a package using a specific pip version, run the following command:
pip3.6 install package-name
Running pip install in verbose mode
When installing packages, sometimes you encounter errors for reasons that are not immediately apparent. In such cases, you can use the verbose mode option to see more detailed output, which helps you to analyze the problem.
To run pip install in verbose mode, use the -v flag. The -v flag increases the output verbosity level by one for each appearance.
For example, to install a package called mypackage in verbose mode, run the following command:
pip install mypackage -v
This command will display more verbose output. In this output, you will see more information about what pip is doing during installation.
You will know which packages are being downloaded, where they are being installed from, and any errors encountered. Verbose mode is particularly useful for debugging installation issues.
If you encounter an error during installation, try using verbose mode to see more information that might help you resolve the issue.
In this article, we have looked at two essential concepts for Python users: installing packages using a specific pip version and running pip install in verbose mode. We have learned how to check the current Python version and install packages using the corresponding pip version.
We also learned how to use verbose mode to troubleshoot package installation errors. With these skills, you’ll have a better understanding of how to manage and troubleshoot Python installations, ensuring that your projects operate smoothly.
In this article, we explored various ways to troubleshoot errors in Python, including the “subprocess-exited-with-error” error. We discussed the importance of upgrading pip packages, using the correct Python version, checking for missing packages, and installing Visual C++ build tools on Windows.
We also demonstrated how to create and activate virtual environments for different projects. Finally, we explained how to install packages using the correct pip version and how to use verbose mode to troubleshoot installation errors.
With these skills, you can manage and troubleshoot Python installations, ensuring that your projects operate smoothly. Remember to check your Python version, install packages using the correct pip version, and use verbose mode to debug installation errors.