Troubleshooting Ethereum Trading Bot Errors on Binance Using Python and WebSocket Connection

As a developer of automated trading bots running on a Mac with VS Code, you are not alone in having trouble connecting to the Binance exchange via the WebSockets 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 a few steps to troubleshoot and resolve the issue.

Understanding the Problem

The error message “PermissionError: [Errno 13] Permission denied” usually means that your application cannot obtain permission to connect to the Binance API or WebSocket server. This can be caused by several reasons, including:

• Insufficient system permissions on your computer

• Incorrectly configured user account with insufficient privileges

• Incorrectly set Binance API key or token

Troubleshooting steps

To resolve this issue, follow these steps:

۱٫ Check your Binance settings and permissions

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

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

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

• The correct user role in the account settings

You can find this information on the [Binance Developer Platform] (

۲٫ Check your 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 current user’s login credentials (not required for this step)

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

You can check your environment variables by running:

python -c "import OS; print(os.environ['PATH'])"

۳٫ 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 `Launch’ section and make sure your user account has sufficient permissions.

۴٫ Check Python and interpreter version

Make sure you are using the latest Python version (3.9 or later) with the correct interpreter. You can check this by running:

python -- version

۵٫ 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: Make sure you have installed the correct library (e.g. pybinance or pypi-binance) and configured it correctly.

۶٫ Test WebSocket Connection

To test WebSocket connection, use a tool like curl:

curl -X POST \
-H "Content-Type: application/json" \
-d '{"symbol": "BTCUSDT", "type": "limit", "limit": 10}'

Replace with 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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