HowTo retrieve URL content using Python

With the following code you can fetch any content from web using http or ftp:

def fetchContent(self, url):
try:
fetchResult = urlfetch.fetch(url)
except:
return 'Exception: Not an URL'
if fetchResult.status_code == 200:
encTypeRaw = fetchResult.headers['content-type']
encStartIdx = encTypeRaw.find('=')
encType = encTypeRaw[encStartIdx + 1:]
fetchResultContent = fetchResult.content
return fetchResultContent.decode(encType)
return 'Warning: URL could not be retrieved successfully'