Error in Heroku: Binance Trade Bot Upload Issue with Python-Binance

As a developer of automated trading bots using the Binance API, it is frustrating when you encounter issues when trying to deploy your code to different platforms. In this article, we will address the error you are experiencing and provide solutions to fix it.

The Error:

The issue is caused by an incorrect regex pattern used in your Python Binance client code. Specifically, the line regex._regex_core.error: bad escape \d at position 7 indicates that there is a problem with one of the characters in the regular expression used for error handling.

Background information:

• Heroku is a cloud platform that provides a managed environment for deploying applications.

• Python-Binance is an API client library that allows you to interact with the Binance exchange API through Python code.

• The exception regex._regex_core.error usually indicates that there is a problem with using invalid characters in your regular expression.

Solution:

Step 1: Check and fix the regex pattern

In your Python Binance client code, make sure you correctly escape any special characters within a regex pattern. Here are some suggestions to improve the regex pattern:

import re





Suppose this is your function to create a Binance API client object:
def create_binance_client():

... (the rest of the code remains the same)
error_regex = r"Invalid input: .+\\d$"
return re.compile(error_regex)
client = create_binance_client()

Step 2: Test your code

After making these changes, test your code to make sure it works as expected. You can do this by doing the following:

• Create a new file (e.g. “test.py”) and add the following code:

“python”

import pytest

from binance.client import Client

from datetime import datetime

client = create_binance_client()

Define some sample data

data = [“Hello world!”, “This is invalid input”, “123”]

for item in data:

Try running the Binance API request with this item as an argument.

Try:

client.get_account_balance(symbol=”BTCUSDT”)

print(f”Error: {item} was successful.”)

except re.error as e:

print(f”Error: {e}. Skipping error message for now.”)

Run tests

if __name__ == “__main__”:

pytest.main()

Save the file (e.g. test.py) and run it with Python:

bash

python -m pytest test_test.py

“`

This should output an empty console, which means your code runs successfully.

Step 3: Upload your code to Heroku

After you’ve tested your code, you can upload it to Heroku. Here is a step-by-step guide:

• Log in to your Heroku account and navigate to the dashboard.

• Click the “New Version” or “Deploy to Heroku” button.

• Select the Python environment from your project settings (it should be set up to use the “Python” interpreter).

• Create a new version with the desired name, description, and any additional information.

• Upload your code by clicking the “Upload” button.

Conclusion:

In this article, we showed you how to identify and fix an error in Heroku caused by incorrect regex patterns when using Python-Binance. By following these steps, you should be able to resolve the issue and successfully deploy your Binance trading bot to Heroku. If you encounter any further issues or need additional support, don’t hesitate to ask for help.

Additional Resources:

• Heroku API Documentation

• Python Binance API Documentation

Following these steps and tips will help you fix the error in your code and successfully deploy your Binance trading bot on Heroku.

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