MetaTrader 5 Python User Group - как использовать Python в Метатрейдере - страница 64

[nicholish en]

ckeiderling :

Hi All,

I hope you don't mind an English man here. Looking for some guidance after spending lots of time searching the web without success.

I am using the MetaTrader5 Python library after some inspiration from Maxiums articles. I have noticed a problem with memory handling. 

When I make a Dataframe using mt5 lib the resultant dataframe works as expected. I have done this within a function that collects the ticks and then performs various analysis before outputting the manipulated df. 

However, if I rerun the function that creates the DataFrame I have noticed that the memory just keeping accumulating from the previous instance. 

I get the same problem using mt5.copy_ticks_range () and mt5.copy_rates_range (). I have to reset the kernel in order to clear out the memory. 

I get the same problem even after removing all code except the line creating the dataframe. For instance:

def vel (symbol, lookback, lookforward, start_date, end_date, quantile_size): 

    ticks = pd.DataFrame (mt5.copy_ticks_range (symbol, datetime (start_date.year, start_date.month, start_date.day), datetime (end_date.year, end_date.month, end_date.day), mt5.COPY_TICKS_ALL), columns = [ 'time', 'bid', 'ask', 'last', 'volume', 'time_msc', 'flags', 'volume_real'])

If I run this several times the memory usage goes up 27MiB each time:

Line # Mem usage Increment Line Contents =========================================== ======= 126.3 MiB 126.3 MiB def vel (symbol, lookback, lookforward, start_date, end_date, quantile_size): 153.3 MiB 26.9 MiB ticks = pd.DataFrame (mt5.copy_ticks_range (symbol, datetime (start_date.year, start_date .month, start_date.day), ...

   Line # Mem usage Increment Line Contents

If you want help debugging then you'll have to give a full MVCE. This snippet is not enough. 

[Maxim Dmitrievsky]

ckeiderling:

Hi All,

I hope you don't mind an English man here.  Looking for some guidance after spending lots of time searching the web without success.

I am using the MetaTrader5 Python library after some inspiration from Maxiums articles. I have noticed a problem with memory handling. 

When I make a Dataframe using mt5 lib the resultant dataframe works as expected. I have done this within a function that collects the ticks and then performs various analysis before outputting the manipulated df. 

However, if I rerun the function that creates the DataFrame I have noticed that the memory just keeping accumulating from the previous instance. 

I get the same problem using mt5.copy_ticks_range () and mt5.copy_rates_range (). I have to reset the kernel in order to clear out the memory. 

I get the same problem even after removing all code except the line creating the dataframe. For instance:

def vel (symbol, lookback, lookforward, start_date, end_date, quantile_size): 

    ticks = pd.DataFrame (mt5.copy_ticks_range (symbol, datetime (start_date.year, start_date.month, start_date.day), datetime (end_date.year, end_date.month, end_date.day), mt5.COPY_TICKS_ALL), columns = [ 'time', 'bid', 'ask', 'last', 'volume', 'time_msc', 'flags', 'volume_real'])

If I run this several times the memory usage goes up 27MiB each time:

Line # Mem usage Increment Line Contents ================================================== 126.3 MiB 126.3 MiB def vel (symbol, lookback, lookforward, start_date, end_date, quantile_size): 153.3 MiB 26.9 MiB ticks = pd.DataFrame (mt5.copy_ticks_range (symbol, datetime (start_date.year, start_date.month, start_date.day), ...

   Line # Mem usage Increment Line Contents

maybe you try to use https://docs.python.org/3/library/gc.html

https://stackabuse.com/basics-of-memory-management-in-python/

[IvanDorofeev]

Всем привет.
Начала появляться такая ошибка при попытка выставить ордер через MetaTrader5.Buy() / Sell():

 order_open = mt5.Buy(symbol, volume)

  File "C:\Python3.7.4\lib\site-packages\MetaTrader5\__init__.py", line 313, in Buy

    if r.retcode != TRADE_RETCODE_REQUOTE and r.retcode != TRADE_RETCODE_PRICE_OFF:

AttributeError: 'NoneType' object has no attribute 'retcode'

Можете подсказать как исправить?

[nicholish en]

AxxelTrader:

Hello everyone.
Such an error began to appear when trying to place an order through  MetaTrader5.Buy () / Sell () :

 order_open = mt5.Buy(symbol, volume)

  File "C:\Python3.7.4\lib\site-packages\MetaTrader5\__init__.py", line 313, in Buy

    if r.retcode != TRADE_RETCODE_REQUOTE and r.retcode != TRADE_RETCODE_PRICE_OFF:

AttributeError: 'NoneType' object has no attribute 'retcode'

Can you tell me how to fix it?

r = mt5.Buy(...)
if r is None:
    print(mt5.last_error())
else:
    if r.retcode ...

[MetaQuotes]

Каким билдом терминала вы пользуетесь?

Обновлялись на бета-версии?

[IvanDorofeev]

MetaQuotes:

Каким билдом терминала вы пользуетесь?

Обновлялись на бета-версии?

Обновился до последней - MetaTrader5 package version:  5.0.31

Такая ошибка возникает как при использовании функций mt5.Buy(), mt5.Sell(), так и при mt5.order_send(requests).

Также пишет что нет атрибута "retcode".

[Renat Fatkhullin]

AxxelTrader:

Обновился до последней - MetaTrader5 package version:  5.0.31

Такая ошибка возникает как при использовании функций mt5.Buy(), mt5.Sell(), так и при mt5.order_send(requests).

Также пишет что нет атрибута "retcode".

Вопрос был про версию терминала.

[IvanDorofeev]

Renat Fatkhullin:

Вопрос был про версию терминала.

МТ5 version: 5.00 build 2361 08 mar 2020

[Renat Fatkhullin]

AxxelTrader:

МТ5 version: 5.00 build 2361 08 mar 2020

Upgrade to the beta version, please.

New functions available in beta versions only.

[IvanDorofeev]

Renat Fatkhullin:

Upgrade to the beta version, please.

New functions available in beta versions only.

Обновил до версии 2432.
Но ошибка всё равно остаётся..
Уже перепробовал на разных брокерах даже..