Import "solcx" could not be resolved, Import "web3" could not be resolved

[praxis-dev]

Hi!

I've decided to to migrate the workflow to WSL2 as described in this article.

After completion of all steps and my project files moved to WSL home path I'm getting these errors from VSCode:

Import "solcx" could not be resolved
Import "web3" could not be resolved

solc x is already installed

praxis@Praxis:~/demos/web3_py_simple_storage$ pip install py-solc-x
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: py-solc-x in /home/praxis/.local/lib/python3.8/site-packages (1.1.1)
Requirement already satisfied: requests<3,>=2.19.0 in /home/praxis/.local/lib/python3.8/site-packages (from py-solc-x) (2.27.1)
Requirement already satisfied: semantic-version<3,>=2.8.1 in /home/praxis/.local/lib/python3.8/site-packages (from py-solc-x) (2.8.5)
Requirement already satisfied: urllib3<1.27,>=1.21.1 in /home/praxis/.local/lib/python3.8/site-packages (from requests<3,>=2.19.0->py-solc-x) (1.26.9)
Requirement already satisfied: idna<4,>=2.5 in /home/praxis/.local/lib/python3.8/site-packages (from requests<3,>=2.19.0->py-solc-x) (3.3)
Requirement already satisfied: certifi>=2017.4.17 in /home/praxis/.local/lib/python3.8/site-packages (from requests<3,>=2.19.0->py-solc-x) (2021.10.8)
Requirement already satisfied: charset-normalizer~=2.0.0 in /home/praxis/.local/lib/python3.8/site-packages (from requests<3,>=2.19.0->py-solc-x) (2.0.12)

web3 is installed too

praxis@Praxis:~/demos/web3_py_simple_storage$ npm ls web3
praxis@ /home/praxis
└── web3@1.7.3

when I try to launch the code I get the following message:

praxis@Praxis:~/demos/web3_py_simple_storage$ python3 deploy.py
Traceback (most recent call last):
  File "/home/praxis/.local/lib/python3.8/site-packages/urllib3/connection.py", line 174, in _new_conn
    conn = connection.create_connection(
  File "/home/praxis/.local/lib/python3.8/site-packages/urllib3/util/connection.py", line 95, in create_connection
    raise err
  File "/home/praxis/.local/lib/python3.8/site-packages/urllib3/util/connection.py", line 85, in create_connection
    sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/praxis/.local/lib/python3.8/site-packages/urllib3/connectionpool.py", line 703, in urlopen
    httplib_response = self._make_request(
  File "/home/praxis/.local/lib/python3.8/site-packages/urllib3/connectionpool.py", line 398, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/home/praxis/.local/lib/python3.8/site-packages/urllib3/connection.py", line 239, in request
    super(HTTPConnection, self).request(method, url, body=body, headers=headers)
  File "/usr/lib/python3.8/http/client.py", line 1256, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/usr/lib/python3.8/http/client.py", line 1302, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/usr/lib/python3.8/http/client.py", line 1251, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/lib/python3.8/http/client.py", line 1011, in _send_output
    self.send(msg)
  File "/usr/lib/python3.8/http/client.py", line 951, in send
    self.connect()
  File "/home/praxis/.local/lib/python3.8/site-packages/urllib3/connection.py", line 205, in connect
    conn = self._new_conn()
  File "/home/praxis/.local/lib/python3.8/site-packages/urllib3/connection.py", line 186, in _new_conn
    raise NewConnectionError(
urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPConnection object at 0x7fabf443ae50>: Failed to establish a new connection: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/praxis/.local/lib/python3.8/site-packages/requests/adapters.py", line 440, in send
    resp = conn.urlopen(
  File "/home/praxis/.local/lib/python3.8/site-packages/urllib3/connectionpool.py", line 785, in urlopen
    retries = retries.increment(
  File "/home/praxis/.local/lib/python3.8/site-packages/urllib3/util/retry.py", line 592, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='127.0.0.1', port=7545): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7fabf443ae50>: Failed to establish a new connection: [Errno 111] Connection refused'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "deploy.py", line 43, in <module>
    nonce = w3.eth.getTransactionCount(my_address)
  File "/home/praxis/.local/lib/python3.8/site-packages/web3/module.py", line 57, in caller
    result = w3.manager.request_blocking(method_str,
  File "/home/praxis/.local/lib/python3.8/site-packages/web3/manager.py", line 197, in request_blocking
    response = self._make_request(method, params)
  File "/home/praxis/.local/lib/python3.8/site-packages/web3/manager.py", line 150, in _make_request
    return request_func(method, params)
  File "/home/praxis/.local/lib/python3.8/site-packages/web3/middleware/formatting.py", line 94, in middleware
    response = make_request(method, params)
  File "/home/praxis/.local/lib/python3.8/site-packages/web3/middleware/gas_price_strategy.py", line 90, in middleware
    return make_request(method, params)
  File "/home/praxis/.local/lib/python3.8/site-packages/web3/middleware/formatting.py", line 94, in middleware
    response = make_request(method, params)
  File "/home/praxis/.local/lib/python3.8/site-packages/web3/middleware/attrdict.py", line 33, in middleware
    response = make_request(method, params)
  File "/home/praxis/.local/lib/python3.8/site-packages/web3/middleware/formatting.py", line 94, in middleware
    response = make_request(method, params)
  File "/home/praxis/.local/lib/python3.8/site-packages/web3/middleware/formatting.py", line 94, in middleware
    response = make_request(method, params)
  File "/home/praxis/.local/lib/python3.8/site-packages/web3/middleware/formatting.py", line 94, in middleware
    response = make_request(method, params)
  File "/home/praxis/.local/lib/python3.8/site-packages/web3/middleware/buffered_gas_estimate.py", line 40, in middleware
    return make_request(method, params)
  File "/home/praxis/.local/lib/python3.8/site-packages/web3/middleware/exception_retry_request.py", line 105, in middleware
    return make_request(method, params)
  File "/home/praxis/.local/lib/python3.8/site-packages/web3/providers/rpc.py", line 88, in make_request
    raw_response = make_post_request(
  File "/home/praxis/.local/lib/python3.8/site-packages/web3/_utils/request.py", line 102, in make_post_request
    response = session.post(endpoint_uri, data=data, *args, **kwargs)  # type: ignore
  File "/home/praxis/.local/lib/python3.8/site-packages/requests/sessions.py", line 577, in post
    return self.request('POST', url, data=data, json=json, **kwargs)
  File "/home/praxis/.local/lib/python3.8/site-packages/requests/sessions.py", line 529, in request
    resp = self.send(prep, **send_kwargs)
  File "/home/praxis/.local/lib/python3.8/site-packages/requests/sessions.py", line 645, in send
    r = adapter.send(request, **kwargs)
  File "/home/praxis/.local/lib/python3.8/site-packages/requests/adapters.py", line 519, in send
    raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='127.0.0.1', port=7545): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7fabf443ae50>: Failed to establish a new connection: [Errno 111] Connection refused'))

Here is how it looks in the interface
And here is my project directory - all in the right folder.

Any suggestions?

[praxis-dev]

Right now attempt to run the deploy.py returns this message, telling that tkinter is missing, but it has been installed too.

/bin/python3.10 /home/praxis/demos/web3_py_simple_storage/deploy.py
praxis@Praxis:~/demos/web3_py_simple_storage$ /bin/python3.10 /home/praxis/demos/web3_py_simple_storage/deploy.py
Traceback (most recent call last):
  File "/home/praxis/demos/web3_py_simple_storage/deploy.py", line 1, in <module>
    from turtle import clear
  File "/usr/lib/python3.10/turtle.py", line 107, in <module>
    import tkinter as TK
ModuleNotFoundError: No module named 'tkinter'
praxis@Praxis:~/demos/web3_py_simple_storage$ sudo apt-get install python3-tk
[sudo] password for praxis: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
python3-tk is already the newest version (3.8.10-0ubuntu1~20.04).
The following packages were automatically installed and are no longer required:
  libpython3.9-minimal libpython3.9-stdlib python3.9-minimal
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 8 not upgraded.
praxis@Praxis:~/demos/web3_py_simple_storage$ /bin/python3.10 /home/praxis/demos/web3_py_simple_storage/deploy.py
Traceback (most recent call last):
  File "/home/praxis/demos/web3_py_simple_storage/deploy.py", line 1, in <module>
    from turtle import clear
  File "/usr/lib/python3.10/turtle.py", line 107, in <module>
    import tkinter as TK
ModuleNotFoundError: No module named 'tkinter'
praxis@Praxis:~/demos/web3_py_simple_storage$ 

[cromewar]

The Tkinter is a library for user interfaces, so please be sure you didn't add that import accidentally.

First of all, please delete the build folder on your project and try again, if that does no work then:

As I mention on the guide, please is important for you to use a python virtualenv

1. refer to the guide and install it
2. create a new one with virtualenv nameOfTheEnv (the name can be anything you like).
3. activate the env source nameOfTheEnv/bin/activate.
4. install the dependencies there again -> Web3, solcx and that stuff.
5. Try running your code using that env, remember that if you are going to use the visual studio terminal your should have opened vscode from the WSL terminal with code . and also activate the env with the same command in step 3.

[praxis-dev]

thanks, @cromewar !

1. Created new vitrualenv named PVenv
2. Activated it
3. Installed Web3, Solcx, Ganache and Truffel
4. Ran the code, results:

Import "solcx" could not be resolved - solved
Import "web3" could not be resolved - solved
No module named 'tkinter' - solved