Python 2 -> 3, urllib.urlopen (corrected the case)

[Irv Kalb]

Thank you!

> On Oct 14, 2017, at 12:10 PM, Ben Bacarisse <ben.usenet at bsb.me.uk> wrote:
> 
> Irv Kalb <Irv at furrypants.com> writes:
> 
> Lots of detail snipped.  I hope it won't matter...
> 
>> <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:749)>
>> 
>> Huh???
>> 
>> I've read a bunch of documentation, and it looks like I'm doing
>> everything right, but I cannot get this to work.  Any other
>> suggestions to get this 3 line program to work correctly?
> 
> Just a data point...  It works here:
> 
> $ python3 t.py
> Response is:  b'156.99\n'
> $ cat t.py
> import urllib.request
> fullURLWithParameters = 'http://finance.yahoo.com/d/quotes.csv?s=aapl&f=l1'
> # read all the data
> response = urllib.request.urlopen(fullURLWithParameters).read()
> 
> print('Response is: ', response)
> $ python3 --version
> Python 3.5.2
> 

I have not tried this on anything but my Mac.  I'm running 3.6.1

> Maybe you are missing some crucial certificates?  Presumably Python
> finds them is standard paces, so it would be worth trying other accesses
> of the URL.  

I am just using an absolutely standard install from Python.org

> For example, here:
> 
> $ wget -q -O - 'http://finance.yahoo.com/d/quotes.csv?s=aapl&f=l1' 
> 156.99
> 
> Finally, wget -S shows that the resource has moved.  It is now at
> 
>  Location: http://download.finance.yahoo.com/d/quotes.csv?s=aapl&f=l1
> 
> I don't think this has anything to do with your problem, but it's worth
> noting.
> 
> -- 
> Ben.
> 

That DID fix it.  I changed the URL to add 'download/' and it worked perfectly.

Apparently, Python 3 differs from Python 2 in the way that it is handling a missing/forwarding URL, because the original code in Python 2.7 works perfectly.

Thanks very much for tracking this down!

Irv