mwclient - MediaWiki API client

# Initialize Site object
import mwclient
site = mwclient.Site('commons.wikimedia.org')
site.login(username, password)

# Edit page
page = site.Pages['Commons:Sandbox']
text = page.text()
print 'Text in sandbox:', text.encode('utf-8')
page.save(text + u'\nExtra data', summary = 'Test edit')

# Printing imageusage
image = site.Images['Example.jpg']
print 'Image', image.name.encode('utf-8'), 'usage:'
for page in image.imageusage():
        print 'Used:', page.name.encode('utf-8'), '; namespace', page.namespace
        print 'Image info:', image.imageinfo

# Uploading a file
site.upload(open('file.jpg'), 'destination.jpg', 'Image description')

# Listing all categories (don't do this in reality)
for category in site.allcategories():
        print category