Troubleshooting Binance Ethereum Trading Robot Errors Using Python and WebSocket Connection

As a developer of automated trading robots running on a Mac with VS Code, you are not alone in having trouble connecting to the Binance exchange via the WebSocket API. Permission denied errors are common when trying to establish a connection between your code and the Exchange servers. In this article, we will walk you through some troubleshooting and resolution steps.

Understanding the Problem

The error message “PermissionError: [Errno 13] Permission deny” usually indicates that the application cannot obtain permission to connect to the Binance API or WebSocket server. This could be due to several reasons, including:

• Insufficient system permissions on your computer

• Incorrectly configured user account with insufficient privileges

• Binance API key or token is incorrectly configured

Troubleshooting steps

To resolve this issue, follow these steps:

1. Check Binance configuration and permissions

Before connecting to the Exchange API, make sure you have:

• A valid Binance API key (API ID) and access token

• The correct account type (e.g. Binance REST API)

• The correct user role in your account settings

You can find these details on the [Binance Developer Platform] (

2. Check Python environment variables

Make sure the following environment variables are set correctly:

• PATH: Specifies the directory where your Python interpreter is located

• USER: Specifies the login credentials of the current user (not required for this step)

• Binance_API_KEY and Binance_ACCESS_TOKEN: Set these variables with your Binance API key and access token

You can check your environment variables by running:

”bash

python -c “import OS; print(os.environ[‘PATH’])”

3. Check your user account permissions
In VS Code, go to 
Preferences



 (Ctrl+Shift+P or Cmd+Shift+P), select 
Python



, then click the 
Project: [your project name] tab. Look for the Execution' section and make sure your user account has sufficient permissions.

4. Check Python version and interpreter
Make sure you are using the latest Python version (3.9 or later) with the correct interpreter. You can check this by running:
''bash
python -- version

5. Reconfigure Binance API and WebSocket connections

If the previous steps do not resolve the issue, try reconfiguring Binance API and WebSocket connections:

• Binance API: Update the binance.py file with your API key and token.

• Binance WebSocket: Ensure that the correct library (e.g. pybinance or pypi-binance) is installed and configured properly.

6. Test WebSocket Connection

To test WebSocket connection, use a tool like curl:

''bash

curl -X POST \

\

-H 'Content-Type: application/json' \

-d '{"symbol": "BTCUSDT", "type": "limit", "limit": 10}'

Replace with your API key and token

``

If you are still having problems, please feel free to share more information about your code and environment. I will be happy to help you!

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