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How Python identifies Virtual Environments
Python identifies virtual environments through a straightforward mechanism. When using an installer like pip, it recognizes the virtual environment context and installs packages accordingly rather than affecting the global installation. The identification process involves checking the presence of a specific configuration file, 'pi-vemv.cfg', located one directory above the binary path. If this file exists, the environment is confirmed as virtual; if it doesn't, it indicates a non-virtual environment. This simplicity in the mechanism underscores the efficiency of Python's handling of virtual environments.