43 lines
1.5 KiB
Markdown
43 lines
1.5 KiB
Markdown
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## Exercise 5a: Virtual Environments
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#### Goal
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Create a virtual environment + install a package + see that that package was installed only in environment
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#### Tasks
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We will use `venv` as our environment manager - while commands might differ, the principles apply to all other package managers as well.
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1. Check which Python you are currently using, and which packages are installed. Also check which folders are in the folder you are installing the environment into.
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3. Create and activate a new environment.
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4. Check again which Python you are using and which packages are installed - are they different?
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5. Install a specific version of a package using pip e.g. pandas=1.5.3
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6. See that dependencies are also installed (more packages than only pandas appear)
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7. Deactivate and delete the environment
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8. Check the packages that are installed when no environment is active again (as step 1). Have they changed?
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#### Commands in case you get stuck (not in correct order):
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```bash
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% investigate Python and packages
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> which python
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> pip freeze
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> pip install <package-name>
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> pip install <package-name>==0.0.1
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% create an environment option 1 (create folder called venv_folder for files related to virtual environment, feel free to change the name)
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> cd <path-to-project_folder>
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> mkdir venv_folder
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> python3 -m venv venv_folder
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> source venv_folder/bin/activate
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% create an environment option 2
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> python3 -m venv <path-to-folder-for-venv>
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> source <path-to-folder-for-venv>/bin/activate
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% deactivate and delete a venv environment
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> deactivate
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> rm -rf venv_folder
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```
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