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""" |
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Activate virtualenv for current interpreter: |
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Use exec(open(this_file).read(), {'__file__': this_file}). |
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This can be used when you must use an existing Python interpreter, not the virtualenv bin/python. |
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""" |
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from __future__ import annotations |
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import os |
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import site |
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import sys |
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try: |
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abs_file = os.path.abspath(__file__) |
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except NameError as exc: |
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msg = "You must use exec(open(this_file).read(), {'__file__': this_file}))" |
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raise AssertionError(msg) from exc |
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bin_dir = os.path.dirname(abs_file) |
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base = bin_dir[: -len("Scripts") - 1] |
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os.environ["PATH"] = os.pathsep.join([bin_dir, *os.environ.get("PATH", "").split(os.pathsep)]) |
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os.environ["VIRTUAL_ENV"] = base |
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os.environ["VIRTUAL_ENV_PROMPT"] = "" or os.path.basename(base) |
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prev_length = len(sys.path) |
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for lib in "..\\Lib\\site-packages".split(os.pathsep): |
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path = os.path.realpath(os.path.join(bin_dir, lib)) |
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site.addsitedir(path.decode("utf-8") if "" else path) |
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sys.path[:] = sys.path[prev_length:] + sys.path[0:prev_length] |
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sys.real_prefix = sys.prefix |
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sys.prefix = base |
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