Mariner Backtesting - AttributeError

Attribute errors in Python are generally raised when you try to access or call an attribute that a particular object type does not possess.

Sample Traceback

 Traceback (most recent call last):
  File "run_simulation.py", line 550, in <module>
    main(sys.argv[1:])
  File "run_simulation.py", line 525, in main
    results = simulator()
  File "/opt/anaconda/lib/python2.7/site-packages/tradesim/engine.py", line 542, in __call__
    return self.simulate()
  File "/opt/anaconda/lib/python2.7/site-packages/tradesim/engine.py", line 661, in simulate
    context_collection.process_event(event, delivery_timestamp)
  File "/opt/anaconda/lib/python2.7/site-packages/tradesim/context.py", line 708, in process_event
    context.process_event(event, delivery_timestamp)
  File "/opt/anaconda/lib/python2.7/site-packages/tradesim/context.py", line 417, in process_event
    self.strategy.on_minute_bar(event, self.market, self.order, self.service, self.account, self.market.bar)
  File "job/strat_any_hack_mid_single_instance.py", line 758, in on_minute_bar
    self.historical_data[symbol]['price'] = list(self.historical_minutes.close)
AttributeError: 'dict' object has no attribute 'close'

Sample Broken Code

 class Triangle(object):
    def __init__(self, angle1, angle2, angle3):
        self.self = self
        self.angle1 = angle1
        self.angle2 = angle2
        self.angle3 = angle3
    number_of_sides = 3

def check_angles(self):
    if self.angle1+self.angle2+self.angle3 == 180:
        return True
    else:
        return False

my_triangle = Triangle(90,30,60)
print my_triangle.number_of_sides
print my_triangle.check_angles()

Sample Fixed Code

 class Triangle(object):
    def __init__(self, angle1, angle2, angle3):
        self.self = self
        self.angle1 = angle1
        self.angle2 = angle2
        self.angle3 = angle3
    number_of_sides = 3

    def check_angles(self):
        if self.angle1+self.angle2+self.angle3 == 180:
            return True
        else:
            return False

my_triangle = Triangle(90,30,60)
print my_triangle.number_of_sides
print my_triangle.check_angles()

Notes

This issue could be as simple as your whitespace being off or when something is not named correctly.