Python-mt4

Because MT4 does not have a built-in library for Python, you must use a "bridge" to facilitate communication between the two.

Community-driven projects like mt4pycon or OTMql4Py provide pre-built DLLs and scripts to handle the socket communication for you.

Python sends a command (Symbol, Volume, SL/TP) to the MT4 EA. python-mt4

This is one of the most reliable methods. It uses an asynchronous messaging library to create a real-time data feed and send trade commands from Python to an MT4 Expert Advisor (EA) acting as a server.

MetaTrader 4 & Python: Bridging the Gap for Modern Algorithmic Trading Because MT4 does not have a built-in library

The MT4 EA receives the message and places the order with your broker. ⚖️ Why use Python with MT4? The Definitive Way of Placing Orders to MT4 Using Python

A simpler, though slightly slower, approach where Python writes trade orders into a shared CSV file in a specific MT4 folder. An EA then reads this file every few seconds to execute the trade. This is one of the most reliable methods

Use Python to pull historical candle data or listen to live ticks via a ZeroMQ bridge .