def getmeth(value):
oldenv = os.environ.get('PYPYJITOPT')
os.environ['PYPYJITOPT'] = value
meth = Method.__new__(Method) # evil hack not to call __init__
meth.setoptions()
if oldenv:
os.environ['PYPYJITOPT'] = oldenv
else:
del os.environ['PYPYJITOPT']
return meth
