On 14/10/17 00:27, Irv Kalb wrote: > One of the colleges where I teach has just moved from Python 2 to Python 3. > I am in the process of converting my beginning Python class from Python 2 to > Python 3. Everything has gone smoothly, until I just tried to convert some > code that imports and uses urllib.urlOpen to fetch data through an API. I am > using an API that I found here: http://www.jarloo.com/yahoo_finance/ > <http://www.jarloo.com/yahoo_finance/> >
Hi Irv, That's great! It's always nice to hear about more people moving with the times :-) > [...] > > Traceback (most recent call last): > File " .... s/StockQuoteYahooAPIMinimal.py", line 9, in <module> > response = urllib.urlopen(fullURLWithParameters).read() > AttributeError: module 'urllib' has no attribute 'urlopen' > > > I've looked at the Python 3.6 documentation for urllib, and I see that > certain calls have been changed and others have been eliminated. But my eyes > glaze over trying to figure out what to use instead. > > My question is: Is there a simple (hopefully one or two line) replacement for > my call to url lib.urlopen(<URL>).read() Python 3 changed a number of things, including some rearrangement of the standard library. The "What's new in Python 3.x" documents are always worth reading, but I think you'll find "What's new in Python 3.0" particularly useful. <https://docs.python.org/3/whatsnew/3.0.html> The library changes are specified in PEP 3108 (this is linked from the "What's new" document) <https://www.python.org/dev/peps/pep-3108/> Python 3 has the urllib.request.urlopen function <https://docs.python.org/3/library/urllib.request.html#urllib.request.urlopen> - this is descended from Python 2's urllib2.urlopen, and should be exactly what you need. > > I know that there are other modules out there that handle requests (like the > Requests module), but this is a strictly controlled university environment. > I cannot download any external packages (other then pygame, which I got > special permission for) onto the computers in the school. Therefore, I'm > looking for something in the Python 3.6 Standard Library. It's nice that Python comes with batteries included, isn't it? Cheers, Thomas PS: Pay attention to the fact that Python is case sensitive, and the function called urlopen (like in your code) and not urlOpen (like in your subject line) -- https://mail.python.org/mailman/listinfo/python-list
