Python codes

[John Addae]

Am coming from python background and new to MetaTrader but very determined to learn .

I have a few questions :

1. Where is the best location to write python codes for trading: is it python script in the Metatrader terminal or inside python IDE like jupyter?

2. when python codes are run inside a python IDE, how do i see the results/ output in the MetaTrader terminal?

Thanks in advance

John.

 

[Teboho Edgar Rakotsoane]

The best Advice to give you is to learn MQL coding Language to save yourself stress and it not so much difficult as all coding languages have similar structure

[Tian Yu Li]

i have leaned python , but i think MQL language is the easiest language i have ever learned, the document is so complete.

so forget python, if you want to make good EAs ,just learn MQL.

[nicholish en]

johnyaddae:

Am coming from python background and new to MetaTrader but very determined to learn .

I have a few questions :

1. Where is the best location to write python codes for trading: is it python script in the Metatrader terminal or inside python IDE like jupyter?

2. when python codes are run inside a python IDE, how do i see the results/ output in the MetaTrader terminal?

Thanks in advance

John.

 

1. An IDE like Pycharm is the best. 

2. You can run your python script from anywhere including a virtualenv. If, however, you use the terminal UI to drop the script on a chart then it will redirect print statements to the Experts tab and log to the experts log file. I prefer to use the automatic logging built into the pymt5adapter package. Here is a hello world... 

import logging
import os
from pathlib import Path

import pymt5adapter as mta

desktop_log_path = Path.home() / 'Desktop/python_mt5.log'
logger = mta.get_logger(path_to_logfile=desktop_log_path, loglevel=logging.DEBUG)
try:
    with mta.connected(raise_on_errors=True, logger=logger):
        rates = mta.copy_rates_from_pos('Invalid Args to raise Exception', 999, 0, 12333)
finally:
    os.startfile(desktop_log_path)

which will result in this log data

2020-08-14 03:50:12,710 INFO    Terminal Initialize Success     {"type": "terminal_connection_state", "state": true}
2020-08-14 03:50:12,710 INFO    Init TerminalInfo       {"type": "init_terminal_info", "terminal_info": {"community_account": false, "community_connection": false, "connected": true, "dlls_allowed": false, "trade_allowed": true, "tradeapi_disabled": false, "email_enabled": false, "ftp_enabled": false, "notifications_enabled": false, "mqid": false, "build": 2560, "maxbars": 100000000, "codepage": 0, "ping_last": 38103, "community_balance": 0.0, "retransmission": 0.0, "company": "MetaQuotes Software Corp.", "name": "MetaTrader 5", "language": "English", "path": "C:\\Users\\User\\Desktop\\MetaTrader\\Terminal1", "data_path": "C:\\Users\\User\\Desktop\\MetaTrader\\Terminal1", "commondata_path": "C:\\Users\\User\\AppData\\Roaming\\MetaQuotes\\Terminal\\Common"}}
2020-08-14 03:50:12,710 INFO    Init AccountInfo        {"type": "init_account_info", "account_info": {"login": 8768768, "trade_mode": 0, "leverage": 100, "limit_orders": 0, "margin_so_mode": 0, "trade_allowed": true, "trade_expert": true, "margin_mode": 0, "currency_digits": 2, "fifo_close": false, "balance": 1002305.13, "credit": 0.0, "profit": 4978.95, "equity": 997326.18, "margin": 3800.0, "margin_free": 993526.18, "margin_level": 26245.425789473687, "margin_so_call": 50.0, "margin_so_so": 30.0, "margin_initial": 0.0, "margin_maintenance": 0.0, "assets": 0.0, "liabilities": 0.0, "commission_blocked": 0.0, "name": "nicholishen", "server": "AMPGlobalUSA-Demo", "currency": "USD", "company": "AMP Global Clearing LLC"}}
2020-08-14 03:50:12,710 WARNING Function Debugging: copy_rates_from_pos {"type": "function_debugging", "latency_ms": 0.15, "last_error": [-2, "Terminal: Invalid params"], "call_signature": {"function": "copy_rates_from_pos", "args": ["Non-existant symbol", 999, 0, 12333], "kwargs": {}}}
2020-08-14 03:50:12,710 CRITICAL        UNCAUGHT EXCEPTION: INVALID_PARAMS: Terminal: Invalid params('Non-existant symbol', 999, 0, 12333){}    {"type": "exception", "last_error": [-2, "Terminal: Invalid params"], "exception": {"type": "MT5Error", "message": "INVALID_PARAMS: Terminal: Invalid params('Non-existant symbol', 999, 0, 12333){}"}}
2020-08-14 03:50:12,710 INFO    Terminal Shutdown       {"type": "terminal_connection_state", "state": false}