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Configuring Python
After you’ve installed Python, you may want to configure some system settings that impact the way Python runs your code. (If you are just getting started with the language, you can probably skip this section completely; there is usually no need to specify any system settings for basic programs.)
Generally speaking, parts of the Python interpreter’s behavior can be configured with environment variable settings and command-line options. In this section, we’ll take a brief look at both, but be sure to see other documentation sources for more details on the topics we introduce here.