python 字符串截取

下面是split截取获得

>>> str = 'http://manualfile.s3.amazonaws.com/pdf/gti-chis-1-user-9fb-0-7a05a56f0b91.pdf'
>>> print str.split()
['http://manualfile.s3.amazonaws.com/pdf/gti-chis-1-user-9fb-0-7a05a56f0b91.pdf']
>>> print str.split('/')
['http:', '', 'manualfile.s3.amazonaws.com', 'pdf', 'gti-chis-1-user-9fb-0-7a05a56f0b91.pdf']
>>> print str.split('/')[-1]
gti-chis-1-user-9fb-0-7a05a56f0b91.pdf
>>> print str.split('/')[-1].split('.')[0]
gti-chis-1-user-9fb-0-7a05a56f0b91
>>> 

下面是通过切片获得的

name = str[str.rfind("/")+1:str.rfind(".")]