On Oct 13, 2017, at 3:27 PM, Irv Kalb <i...@furrypants.com> wrot
If I take the same program and just modify the print statement to add
parentheses, then try to run it in Python 3.6 (on a Mac):
...
import urllib
# set the Yahoo finance url, set stock name, ask for last price
fullURLWithParameters = 'http://finance.yahoo.com/d/quotes.csv?s=aapl&f=l1'
# read all the data
response = urllib.urlopen(fullURLWithParameters).read()
print('Response is: ', response)
I get the following:
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'
Thanks for the responses, but I still can't get it to work correctly. With
MRAB's suggestion, I've modified the code to be:
from urllib import request
# set the Yahoo finance url, set stock name, ask for last price
fullURLWithParameters = 'http://finance.yahoo.com/d/quotes.csv?s=aapl&f=l1'
# read all the data
response = request.urlopen(fullURLWithParameters).read()
print('Response is: ', response)
But when I run that (Mac Python 3.6.1), I get:
Traceback (most recent call last):
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py",
line 1318, in do_open
encode_chunked=req.has_header('Transfer-encoding'))
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py",
line 1239, in request
self._send_request(method, url, body, headers, encode_chunked)
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py",
line 1285, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py",
line 1234, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py",
line 1026, in _send_output
self.send(msg)
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py",
line 964, in send
self.connect()
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py",
line 1400, in connect
server_hostname=server_hostname)
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py", line
401, in wrap_socket
_context=self, _session=session)
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py", line
808, in __init__
self.do_handshake()
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py", line
1061, in do_handshake
self._sslobj.do_handshake()
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py", line
683, in do_handshake
self._sslobj.do_handshake()
ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed
(_ssl.c:749)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/Python3 Intro Class/Module 9 - Dictionaries & Internet (not finished)/Module 9
Files/StockQuoteYahooAPIMinimal.py", line 9, in <module>
response = request.urlopen(fullURLWithParameters).read()
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py",
line 223, in urlopen
return opener.open(url, data, timeout)
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py",
line 532, in open
response = meth(req, response)
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py",
line 642, in http_response
'http', request, response, code, msg, hdrs)
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py",
line 564, in error
result = self._call_chain(*args)
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py",
line 504, in _call_chain
result = func(*args)
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py",
line 756, in http_error_302
return self.parent.open(new, timeout=req.timeout)
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py",
line 526, in open
response = self._open(req, data)
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py",
line 544, in _open
'_open', req)
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py",
line 504, in _call_chain
result = func(*args)
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py",
line 1361, in https_open
context=self._context, check_hostname=self._check_hostname)
File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py",
line 1320, in do_open
raise URLError(err)
urllib.error.URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate
verify failed (_ssl.c:749)>
Using Stefan's suggestion from 2to3:
import urllib.request, urllib.parse, urllib.error
# set the Yahoo finance url, set stock name, ask for last price
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)
I get the exact same traceback as above.
Also, if I add a try/except around the call:
# read all the data
try:
response = urllib.request.urlopen(fullURLWithParameters).read()
except urllib.error.URLError as e:
print(e)
I get the same bottom line error from the traceback above:
<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?
