Interactive brokers get_last_price always returning yestreday's closing price (v 3.7.3)

[logicwar]

Cannot get real last price from Interactive brokers, but instead yesterday's closing price

i.e:
2024-09-16 19:35:09,335: root: WARNING: Last price for AAPL not found. Using yesterday's closing price of 222.5 instead. reqId = 10004
2024-09-16 19:35:09,458: root: WARNING: Last price for BAC not found. Using yesterday's closing price of 38.65 instead. reqId = 10006
2024-09-16 19:35:09,461: root: WARNING: Last price for AXP not found. Using yesterday's closing price of 259.0 instead. reqId = 10007
2024-09-16 19:35:09,464: root: WARNING: Last price for KO not found. Using yesterday's closing price of 71.41 instead. reqId = 10008
2024-09-16 19:35:09,467: root: WARNING: Last price for CVX not found. Using yesterday's closing price of 140.61 instead. reqId = 10009

[logicwar]

I believe I have identified the source of the issue (at least, it seems to work for me). However, as I am uncertain about the original logic behind the implementation, I am providing only an explanation of the changes I made without submitting an actual code modification.

In the file interactive_brokers.py, within the tickPrice() method, the price is consistently overwritten by yesterday's closing price because tickType == 9 always follows tickType == 4.

The root cause appears to be that self.tick is never initialized, remaining None, which causes the price already set by tickType == 4 to be overwritten.

I propose changing the check self.tick is None to self.price is None to resolve this, as illustrated below:

        # If the last price is not available, then use yesterday's closing price
        # This can happen if the market is closed
        if tickType == 9 and self.price is None and self.should_use_last_close: # Replaced self.tick with self.price
            self.price = price
            self.tick_type_used = tickType

[logicwar]

@grzesir any chance to review this and integrate it in the base code if applicable ?