Traceback (most recent call last):


 "/Users/paul/Desktop/Github_repos/qiskit-terra/test/python/circuit/test_extensions_standard.py", line 985, in test_ch_reg_bit

instruction_set = self.circuit.ch(self.qr, self.qr2[1])


 "/Users/paul/miniconda3/lib/python3.7/site-packages/qiskit_aqua-0.5.6-py3.7.egg/qiskit/aqua/circuits/gates/controlled_hadamard_gate.py", line 42, in ch

raise AquaError('A qubit is expected for the control.')
qiskit.aqua.aqua_error.AquaError: 'A qubit is expected for the control.'

1698/32256Traceback (most recent call last):


 "/export/home/jli/PycharmProjects/practical/data_process/base_on_distance_rate.py", line 47, in <module>

item_first = wikipedia.page(item[0])


 "/export/home/jli/.local/lib/python2.7/site-packages/wikipedia/wikipedia.py", line 276, in page

return WikipediaPage(title, redirect=redirect, preload=preload)


 "/export/home/jli/.local/lib/python2.7/site-packages/wikipedia/wikipedia.py", line 299, in __init__

self.__load(redirect=redirect, preload=preload)


 "/export/home/jli/.local/lib/python2.7/site-packages/wikipedia/wikipedia.py", line 336, in __load

request = _wiki_request(query_params)


 "/export/home/jli/.local/lib/python2.7/site-packages/wikipedia/wikipedia.py", line 737, in _wiki_request

r = requests.get(API_URL, params=params, headers=headers)


 "/usr/lib/python2.7/dist-packages/requests/api.py", line 67, in get

return request('get', url, params=params, **kwargs)


 "/usr/lib/python2.7/dist-packages/requests/api.py", line 53, in request

return session.request(method=method, url=url, **kwargs)


 "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 468, in request

resp = self.send(prep, **send_kwargs)


 "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 597, in send

history = [resp for resp in gen] if allow_redirects else []


 "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 195, in resolve_redirects

**adapter_kwargs


 "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 576, in send

r = adapter.send(request, **kwargs)


 "/usr/lib/python2.7/dist-packages/requests/adapters.py", line 437, in send

raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='en.wikipedia.org', port=443): Max retries exceeded with url: /w/api.php?inprop=url&redirects=&format=json&ppprop=disambiguation&prop=info%7Cpageprops&titles=Andrea+del+Sarto&action=query (Caused by NewConnectionError('<requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f3666d97350>: Failed to establish a new connection: [Errno 101] Network is unreachable',))
