A.pipinstallDjango>=1.8 B.pipinstall-rrequirements.txt C.pip-egit+http://git.example.com/MyProject#egg=MyProject D.pipinstall./SomePackage-1.0.4.tar.gz
A.__with__ B.__enter__ C.__open__ D.__exit__
A.list("123") B.map(unicode,range(1,3)) C.[("1"),("2"),("3")] D.[("1",),("2",),("3",)]