VisEvol: Visual Analytics to Support Hyperparameter Search through Evolutionary Optimization
https://doi.org/10.1111/cgf.14300
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47 lines
1.5 KiB
47 lines
1.5 KiB
5 years ago
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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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import os
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import site
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import sys
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try:
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__file__
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except NameError:
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raise AssertionError("You must use exec(open(this_file).read(), {'__file__': this_file}))")
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# prepend bin to PATH (this file is inside the bin directory)
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bin_dir = os.path.dirname(os.path.abspath(__file__))
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os.environ["PATH"] = os.pathsep.join([bin_dir] + os.environ.get("PATH", "").split(os.pathsep))
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base = os.path.dirname(bin_dir)
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# virtual env is right above bin directory
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os.environ["VIRTUAL_ENV"] = base
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# add the virtual environments site-package to the host python import mechanism
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IS_PYPY = hasattr(sys, "pypy_version_info")
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IS_JYTHON = sys.platform.startswith("java")
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if IS_JYTHON:
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site_packages = os.path.join(base, "Lib", "site-packages")
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elif IS_PYPY:
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site_packages = os.path.join(base, "site-packages")
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else:
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IS_WIN = sys.platform == "win32"
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if IS_WIN:
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site_packages = os.path.join(base, "Lib", "site-packages")
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else:
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site_packages = os.path.join(base, "lib", "python{}".format(sys.version[:3]), "site-packages")
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prev = set(sys.path)
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site.addsitedir(site_packages)
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sys.real_prefix = sys.prefix
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sys.prefix = base
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# Move the added items to the front of the path, in place
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new = list(sys.path)
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sys.path[:] = [i for i in new if i not in prev] + [i for i in new if i in prev]
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