Question

I’m trying to split a string returned from the Python implementation of Interactive Broker’s API, but I keep getting a:

AttributeError: 'TickPrice' object has no attribute 'split'

def my_price_handler(msg):
    fields=msg.split()
    print fields[0]

Checked the API code and (1) msg is a string and (2) ‘split’ is not redefined elsewhere. Msg string looks like this <Tick Price tickerId=1, field=1, price=74.0, canAutoExecute=1> and can be printed to console directly. Same error message when using syntax:

def my_price_handler(msg):
    fields=string.split(msg)
    print fields[0]

I have imported string at the top of the program.

Is this a variable scope issue?

Answer 1

Clearly, msg is not a string when it enters my_price_handler; it’s a TickPrice. Put

print(type(msg))

before the split call to convince yourself of this fact.

(The fact that msg can be printed does not mean it’s a string, if that’s what you thought.)