当我尝试时，pypm install twisted pypm install morbid pypm install orbited我得到
warning: no such package found for requirement "twisted"; try PyPM Index:
http://code.activestate.com/pypm/search:twisted/
warning: no such package found for requirement "morbid"; try PyPM Index:
http://code.activestate.com/pypm/search:morbid/
warning: no such package found for requirement "orbited"; try PyPM Index:
http://code.activestate.com/pypm/search:orbited/
有谁知道为什么这些包都没有被识别？我在做一些明显错误的事情吗？