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EDIT :: activate_this.py

""" Activate virtualenv for current interpreter: import runpy runpy.run_path(this_file) This can be used when you must use an existing Python interpreter, not the virtualenv bin/python. """ # noqa: D415 from __future__ import annotations import os import site import sys try: abs_file = os.path.abspath(__file__) except NameError as exc: msg = "You must use import runpy; runpy.run_path(this_file)" raise AssertionError(msg) from exc bin_dir = os.path.dirname(abs_file) base = bin_dir[: -len(__BIN_NAME__) - 1] # strip away the bin part from the __file__, plus the path separator # prepend bin to PATH (this file is inside the bin directory) os.environ["PATH"] = os.pathsep.join([bin_dir, *os.environ.get("PATH", "").split(os.pathsep)]) os.environ["VIRTUAL_ENV"] = base # virtual env is right above bin directory os.environ["VIRTUAL_ENV_PROMPT"] = __VIRTUAL_PROMPT__ or os.path.basename(base) # add the virtual environments libraries to the host python import mechanism prev_length = len(sys.path) for lib in __LIB_FOLDERS__.split(os.pathsep): path = os.path.realpath(os.path.join(bin_dir, lib)) site.addsitedir(path.decode("utf-8") if __DECODE_PATH__ else path) sys.path[:] = sys.path[prev_length:] + sys.path[0:prev_length] sys.real_prefix = sys.prefix sys.prefix = base

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