Using urlib in a loop - python-3.x

Question

I am trying to write a simple python script that checks the status code of a specific URL and take necessary actions based on the return code. I am using urllib module to achieve this. The issue with this code is that I have different departments defined within a list (I need to iterate over this list inside the urllib) I can't seem to find a way to substitute/insert elements of list in the for loop.
import getopt, sys
import urllib.request
depts = [ 'support', 'edelivery', 'docs']
for dept in depts:
res = urllib.request.urlopen('https://dept.oracle.com').getcode()
print(res)
I get the below error. Can we actually iterate over a list in urllib module in a loop?
#python3 reg_c_with_all.py
Traceback (most recent call last):
File "/usr/lib64/python3.7/urllib/request.py", line 1350, in do_open
encode_chunked=req.has_header('Transfer-encoding'))
File "/usr/lib64/python3.7/http/client.py", line 1277, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/usr/lib64/python3.7/http/client.py", line 1323, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/usr/lib64/python3.7/http/client.py", line 1272, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/usr/lib64/python3.7/http/client.py", line 1032, in _send_output
self.send(msg)
File "/usr/lib64/python3.7/http/client.py", line 972, in send
self.connect()
File "/usr/lib64/python3.7/http/client.py", line 1439, in connect
super().connect()
File "/usr/lib64/python3.7/http/client.py", line 944, in connect
(self.host,self.port), self.timeout, self.source_address)
File "/usr/lib64/python3.7/socket.py", line 707, in create_connection
for res in getaddrinfo(host, port, 0, SOCK_STREAM):
File "/usr/lib64/python3.7/socket.py", line 752, in getaddrinfo
for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -2] Name or service not known
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "reg_c_with_all.py", line 6, in <module>
res = urllib.request.urlopen('https://dept.oracle.com').getcode()
File "/usr/lib64/python3.7/urllib/request.py", line 222, in urlopen
return opener.open(url, data, timeout)
File "/usr/lib64/python3.7/urllib/request.py", line 525, in open
response = self._open(req, data)
File "/usr/lib64/python3.7/urllib/request.py", line 543, in _open
'_open', req)
File "/usr/lib64/python3.7/urllib/request.py", line 503, in _call_chain
result = func(*args)
File "/usr/lib64/python3.7/urllib/request.py", line 1393, in https_open
context=self._context, check_hostname=self._check_hostname)
File "/usr/lib64/python3.7/urllib/request.py", line 1352, in do_open
raise URLError(err)
urllib.error.URLError: <urlopen error [Errno -2] Name or service not known>
When I run it individually it returns the response code as expected.
>>> urllib.request.urlopen('https://support.oracle.com').getcode()
200
>>> urllib.request.urlopen('https://docs.oracle.com').getcode()
200
>>> urllib.request.urlopen('https://edelivery.oracle.com').getcode()
200
>>>

Answer 1

Your code iterates over the departments but it does not use them to modify the URL. Try using an fstring to insert the value of dept in the URL:
import getopt, sys
import urllib.request
depts = [ 'support', 'edelivery', 'docs']
for dept in depts:
url = f'https://{dept}.oracle.com'
res = urllib.request.urlopen(url).getcode()
print(f'{url} => {res}')
Output:
https://support.oracle.com => 200
https://edelivery.oracle.com => 200
https://docs.oracle.com => 200