Lesson 4: Getting a large traceback when trying to print(nonce)

[Daruma1800]

Hey Team,

Running into an issue when trying to run deploy.py up to the print(nonce) section video (3:58:46). I believe the code is sound but based on the tracebacks it looks like its calling on different files? Please find my code and error below, apologies definitely a noob here.

Thank you for taking the time to look at this:

PS C:\Users\cvida\OneDrive\Desktop\Exercise Files\demos\web3_py_simplestorage> python deploy.py
INFO: Could not find files for the given pattern(s).
Installing...
<class 'web3._utils.datatypes.Contract'>
Traceback (most recent call last):
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\urllib3\connection.py", line 175, in _new_conn
(self._dns_host, self.port), self.timeout, **extra_kw
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\urllib3\util\connection.py", line 96, in create_connection
raise err
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\urllib3\util\connection.py", line 86, in create_connection
sock.connect(sa)
OSError: [WinError 10049] The requested address is not valid in its context

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\urllib3\connectionpool.py", line 706, in urlopen
chunked=chunked,
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\urllib3\connectionpool.py", line 394, in _make_request
conn.request(method, url, **httplib_request_kw)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\urllib3\connection.py", line 239, in request
super(HTTPConnection, self).request(method, url, body=body, headers=headers)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\http\client.py", line 1229, in request
self._send_request(method, url, body, headers, encode_chunked)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\http\client.py", line 1275, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\http\client.py", line 1224, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\http\client.py", line 1016, in _send_output
self.send(msg)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\http\client.py", line 956, in send
self.connect()
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\urllib3\connection.py", line 205, in connect
conn = self._new_conn()
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\urllib3\connection.py", line 187, in _new_conn
self, "Failed to establish a new connection: %s" % e
urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPConnection object at 0x000001F56D448320>: Failed to establish a new connection: [WinError 10049] The requested address is not valid in its context

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\requests\adapters.py", line 449, in send timeout=timeout
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\urllib3\connectionpool.py", line 756, in urlopen
method, url, error=e, _pool=self, _stacktrace=sys.exc_info()[2]
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\urllib3\util\retry.py", line 574, in increment
raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='0.0.0.0', port=7545): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x000001F56D448320>: Failed to establish a new connection: [WinError 10049] The requested address is not valid in its context'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "deploy.py", line 51, in
nonce = w3.eth.getTransactionCount(my_address)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\web3\module.py", line 60, in caller
null_result_formatters)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\web3\manager.py", line 197, in request_blocking
response = self._make_request(method, params)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\web3\manager.py", line 150, in _make_request
return request_func(method, params)
File "cytoolz/functoolz.pyx", line 250, in cytoolz.functoolz.curry.call
return self.func(*args, **kwargs)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\web3\middleware\formatting.py", line 76, in apply_formatters
response = make_request(method, params)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\web3\middleware\gas_price_strategy.py",
line 90, in middleware
return make_request(method, params)
File "cytoolz/functoolz.pyx", line 250, in cytoolz.functoolz.curry.call
return self.func(*args, **kwargs)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\web3\middleware\formatting.py", line 74, in apply_formatters
response = make_request(method, formatted_params)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\web3\middleware\attrdict.py", line 33, in middleware
response = make_request(method, params)
File "cytoolz/functoolz.pyx", line 250, in cytoolz.functoolz.curry.call
return self.func(*args, **kwargs)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\web3\middleware\formatting.py", line 74, in apply_formatters
response = make_request(method, formatted_params)
File "cytoolz/functoolz.pyx", line 250, in cytoolz.functoolz.curry.call
return self.func(*args, **kwargs)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\web3\middleware\formatting.py", line 76, in apply_formatters
response = make_request(method, params)
File "cytoolz/functoolz.pyx", line 250, in cytoolz.functoolz.curry.call
return self.func(*args, **kwargs)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\web3\middleware\formatting.py", line 74, in apply_formatters
response = make_request(method, formatted_params)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\web3\middleware\buffered_gas_estimate.py", line 40, in middleware
return make_request(method, params)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\web3\middleware\exception_retry_request.py", line 105, in middleware
return make_request(method, params)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\web3\providers\rpc.py", line 91, in make_request
**self.get_request_kwargs()
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\web3_utils\request.py", line 48, in make_post_request
response = session.post(endpoint_uri, data=data, *args, **kwargs) # type: ignore
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\requests\sessions.py", line 590, in post return self.request('POST', url, data=data, json=json, **kwargs)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\requests\sessions.py", line 542, in request
resp = self.send(prep, **send_kwargs)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\requests\sessions.py", line 655, in send r = adapter.send(request, **kwargs)
File "C:\Users\cvida\AppData\Local\Programs\Python\Python37\lib\site-packages\requests\adapters.py", line 516, in send raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='0.0.0.0', port=7545): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x000001F56D448320>: Failed to establish a new
connection: [WinError 10049] The requested address is not valid in its context'))

[cromewar]

Hello @Daruma1800, well there is actually two problems here:

1. Change the chainId on ganache ui to 1337 which is the default one for ganache.
2. Second you have the well known cytools error which is related to windows users, you can install visual studio community and it's python development tools or try with WSL (windows subsystem for linux).

[Daruma1800]

Hey @cromewar Thank you for the above I was able to install web3 properly after installing the above. Also confirming I changed the chainId to 1337, however should I also change the RPC server?

[cromewar]

Depends if you are just using windows you don't have to, if you want to use WSL you should choose the one for it. Btw I'm glad is solved now.