add zsh h()

venv/bin/activate_this.py

@@ -0,0 +1,46 @@
+"""Activate virtualenv for current interpreter:
+
+Use exec(open(this_file).read(), {'__file__': this_file}).
+
+This can be used when you must use an existing Python interpreter, not the virtualenv bin/python.
+"""
+import os
+import site
+import sys
+
+try:
+    __file__
+except NameError:
+    raise AssertionError("You must use exec(open(this_file).read(), {'__file__': this_file}))")
+
+# prepend bin to PATH (this file is inside the bin directory)
+bin_dir = os.path.dirname(os.path.abspath(__file__))
+os.environ["PATH"] = os.pathsep.join([bin_dir] + os.environ.get("PATH", "").split(os.pathsep))
+
+base = os.path.dirname(bin_dir)
+
+# virtual env is right above bin directory
+os.environ["VIRTUAL_ENV"] = base
+
+# add the virtual environments site-package to the host python import mechanism
+IS_PYPY = hasattr(sys, "pypy_version_info")
+IS_JYTHON = sys.platform.startswith("java")
+if IS_JYTHON:
+    site_packages = os.path.join(base, "Lib", "site-packages")
+elif IS_PYPY:
+    site_packages = os.path.join(base, "site-packages")
+else:
+    IS_WIN = sys.platform == "win32"
+    if IS_WIN:
+        site_packages = os.path.join(base, "Lib", "site-packages")
+    else:
+        site_packages = os.path.join(base, "lib", "python{}".format(sys.version[:3]), "site-packages")
+
+prev = set(sys.path)
+site.addsitedir(site_packages)
+sys.real_prefix = sys.prefix
+sys.prefix = base
+
+# Move the added items to the front of the path, in place
+new = list(sys.path)
+sys.path[:] = [i for i in new if i not in prev] + [i for i in new if i in prev]