pypm install（package）发出警告：找不到requiremen的此类包

Question

当我尝试pypm install twistedpypm install morbidpypm install orbited时，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/

有人知道为什么这些包裹都不被识别吗？我是不是做了什么明显的错误？在