Phil wrote: > My apatite having been whetted I'm now stymied because of a Ubuntu > dependency problem during the installation of urllib3. This is listed as > a bug. Has anyone overcome this problem? > > Perhaps there's another library that I can use to download data from a > web page?
You mean you are using Python 3? The replacement for urllib2 in Python 3 is urllib.request and a few others. There is a tool called 2to3 that can help you with the transition. The original Python 2 code: $ cat parse.py import urllib2 import json url = "http://*********/goldencasket"; s = urllib2.urlopen(url).read() s = s.partition("latestResults_productResults")[2].lstrip(" =") s = s.partition(";")[0] data = json.loads(s) lotto = data["GoldLottoSaturday"] print lotto["drawDayDateNumber"] print map(int, lotto["primaryNumbers"]) print map(int, lotto["secondaryNumbers"]) $ python parse.py Sat 18/May/13, Draw 3321 [14, 31, 16, 25, 6, 3] [9, 35] Now let's apply 2to3 (I'm using the version that comes with python3.3). The -w option tells the script to overwrite the original source: $ 2to3-3.3 parse.py -w [noisy output omitted] The script now looks like this: $ cat parse.py import urllib.request, urllib.error, urllib.parse import json url = "http://*********/goldencasket"; s = urllib.request.urlopen(url).read() s = s.partition("latestResults_productResults")[2].lstrip(" =") s = s.partition(";")[0] data = json.loads(s) lotto = data["GoldLottoSaturday"] print(lotto["drawDayDateNumber"]) print(list(map(int, lotto["primaryNumbers"]))) print(list(map(int, lotto["secondaryNumbers"]))) $ python3.3 parse.py Traceback (most recent call last): File "parse.py", line 7, in <module> s = s.partition("latestResults_productResults")[2].lstrip(" =") TypeError: expected bytes, bytearray or buffer compatible object After manually changing the line s = urllib.request.urlopen(url).read() to s = urllib.request.urlopen(url).read().decode() $ python3.3 parse.py Sat 18/May/13, Draw 3321 [14, 31, 16, 25, 6, 3] [9, 35] $ _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
