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- import os.path
- import site
- import sys
- def running_under_virtualenv():
- # type: () -> bool
- """
- Return True if we're running inside a virtualenv, False otherwise.
- """
- if hasattr(sys, 'real_prefix'):
- # pypa/virtualenv case
- return True
- elif sys.prefix != getattr(sys, "base_prefix", sys.prefix):
- # PEP 405 venv
- return True
- return False
- def virtualenv_no_global():
- # type: () -> bool
- """
- Return True if in a venv and no system site packages.
- """
- # this mirrors the logic in virtualenv.py for locating the
- # no-global-site-packages.txt file
- site_mod_dir = os.path.dirname(os.path.abspath(site.__file__))
- no_global_file = os.path.join(site_mod_dir, 'no-global-site-packages.txt')
- if running_under_virtualenv() and os.path.isfile(no_global_file):
- return True
- else:
- return False
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