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Splitting and joining a path/URL

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Treating local files

Splitting:

import os

file = '/home/jabba/python/filepath/hello.py'

(dirName, fileName) = os.path.split(file)
print dirName    # /home/jabba/python/filepath
print fileName   # hello.py

(fileBaseName, fileExt) = os.path.splitext(fileName)
print fileBaseName   # hello
print fileExt        # .py

Joining:

import os

print os.path.join('/trash/movies', 'film.avi')    # (no trailing slash)   /trash/movies/film.avi
print os.path.join('/trash/movies/', 'film.avi')   # (with trailing slash) /trash/movies/film.avi

Notice that you don't have to bother about the trailing slash.

Treating URLs

Splitting:

import os
from urlparse import urlparse

url = 'http://japancsaj.com/pic/rju_ri/rju_ri_9.jpg'
fileName = os.path.split(urlparse(url)[2])[1]
print fileName   # rju_ri_9.jpg

See also http://docs.python.org/library/urlparse.html#urlparse.urlparse .

Joining:

import urlparse

base='http://example.com/'
file='img.jpg'
print urlparse.urljoin(base, file)   # http://example.com/img.jpg

Don't bother about the trailing slash.