John Nagle added the comment:
Suggest adding a user_agent optional parameter, as shown here:
def __init__(self, url='', user_agent=None):
urllib.robotparser.RobotFileParser.__init__(self, url) # init parent
self.user_agent = user_agent # save user agent
def read(self):
"""
Reads the robots.txt URL and feeds it to the parser.
Overrides parent read function.
"""
try:
req = urllib.request.Request( # request with user
agent specified
self.url,
data=None)
if self.user_agent is not None : # if overriding user
agent
req.add_header("User-Agent", self.user_agent)
f = urllib.request.urlopen(req) # open connection
except urllib.error.HTTPError as err:
if err.code in (401, 403):
self.disallow_all = True
elif err.code >= 400 and err.code < 500:
self.allow_all = True
else:
raw = f.read()
self.parse(raw.decode("utf-8").splitlines())
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