Python for Absolute Beginners Transcripts
Chapter: Using external Python packages
Lecture: 09-concept-external-packages-workflow
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Let's take just a moment and review
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how we're using our external libraries or external packages.
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We have a requirements.txt where in our program
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we express this program is going to need
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these external packages
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or it's going to crash or not run or it just won't function.
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So we put that in the requirements.txt somewhere
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and then before we install the packages
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you want to make sure you have
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an isolated virtual environment.
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So you do that one of two ways
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depending on the operating system you're on.
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A macOS and Linux you have this Python3 -m venv
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that's the module, the command
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and then venv is the directory
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you can change that to be whatever you want.
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Then you have to say . foldername/bin/activate.
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On a Windows very similar
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but it's no dot, and then venv\scripts\activate.
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Once either of those are done
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your prompt should change to have this little venv
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or maybe in the future the folder name at the top there.
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And then you just pip install the requirements
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by saying -r and then the requirements file.
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It doesn't have to be requirements.txt
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but it probably should
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because that's what the tools look for.
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Then you can just start using your library
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and import colorama, work with its elements
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like this four class or four enumeration.
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Here we want to say hi, with color.
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Make that green? Easy now.
