Windows向け virtualenvwrapperもどき

workon.bat

@echo off

set BK_WORKON_HOME=%WORKON_HOME%
set BK_HOMEDIR=%HOMEDIR%

set WORKON_HOME=C:\DEVELOP\py_envs
set HOMEDIR=C:\DEVELOP\bin
for /F "usebackq" %%I IN (`python %HOMEDIR%\workon.py %*`) DO call %%I

set WORKON_HOME=%BK_WORKON_HOME%
set HOMEDIR=%BK_HOMEDIR%

workon.py

import glob, os, sys

def main():
    WORKON_HOME=os.environ.get('WORKON_HOME')
    pattern = WORKON_HOME + r'\*' if len(sys.argv) == 1 \
                                  else r'%s\%s*' % (WORKON_HOME, sys.argv[1])
    folders = list(glob.glob(pattern))
    if len(folders) == 0:
        return
    if len(folders) == 1:
        print os.path.join(folders[0], r'scripts\activate.bat')
        return

    for i, folder in enumerate(folders):
        sys.stderr.write("%2d -- %s\n" % (i + 1, os.path.basename(folder)))

    sys.stderr.write("No.>")
    try:
        no = int(sys.stdin.readline().rstrip('\n'))
        print os.path.join(folders[no - 1], r'scripts\activate.bat')
    except ValueError:
        pass

if __name__ == "__main__":
    main()