![]() If you want to install pyserial globally, then turn off the virtual environment by running the deactivate command before running the pip install command. The solution is to run the pip install command on the environment you want to use. Likewise, any package installed outside of that virtual environment won’t be accessible from the virtual environment. If you run pip install while the virtual environment is active, then the package is installed only for that environment In the picture above, the name of the virtual environment (demoenv) appears, indicating that the virtual environment is currently active. When a virtual environment is active, the name of that environment will be shown inside parentheses as shown below: You can see if a virtual environment is active or not by looking at your prompt in the terminal. If you are installing pyserial inside a virtual environment, then the module won’t be accessible outside of that environment. Python venv package allows you to create a virtual environment where you can install different versions of packages required by your project. Python virtual environment is activeĪnother scenario that could cause this error is you may have pyserial installed in a virtual environment. To solve this error, you need to run the pip install pyserial command again so that serial is installed and accessible by the active Python version. The steps above will cause the error because pyserial is installed in /usr/bin/, and your code is probably executed using Python from /opt/homebrew/ path. Then you run import serial in your code.Install Python using Homebrew, you have Python in /opt/homebrew/.Install pyserial with pip using /usr/bin/ Python version. ![]() Suppose you run the following steps in your project: In the example above, there are two versions of Python installed on /opt/homebrew/bin/python3 and /usr/bin/python3. You can test this by running the which -a python or which -a python3 command from the terminal: If you have multiple versions of Python installed on your system, you need to make sure that you are using the specific version where the pyserial module is available. Let’s see how to fix these errors in practice. The package is not installed in P圜harm.Your IDE uses a different version of Python from the one that has pyserial.You might have pyserial installed in a virtual environment, and you are not activating the virtual environment before running your code.You may have multiple versions of Python installed on your system, and you are using a different version of Python than the one where pyserial is installed.There are several reasons why this error can happen: If you still see the error even after installing the module, it means that the pyserial package can’t be found in your Python environment. Once the module is installed, you should be able to run the code without receiving this error. # if you don't have pip in your PATH: python -m pip install pyserial ![]()
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