text: Title: Use another augmented assignment statement
  Body: ### Is there an existing issue for this?
  
  - [X] I have searched the existing issues
  
  ### Is your feature request related to a problem? Please describe.
  
  :eyes: Some source code analysis tools can help to find opportunities for improving software components.
  :thought_balloon: I propose to [increase the usage of augmented assignment statements](https://docs.python.org/3/reference/simple_stmts.html#augmented-assignment-statements "Augmented assignment statements") accordingly.
  
  ### Describe the solution you'd like.
  
  ```diff
  diff --git a/examples/martingale.py b/examples/martingale.py
  index dcbcf7a..f4ffcfa 100644
  --- a/examples/martingale.py
  +++ b/examples/martingale.py
  @@ -176,7 +176,7 @@ class MartingaleTrader(object):
                       target_value = total_buying_power - self.last_price
                   target_qty = int(target_value / self.last_price)
                   if self.streak_increasing:
  -                    target_qty = target_qty * -1
  +                    target_qty *= -1
                   self.send_order(target_qty)
           # Update our account balance
           self.equity = float(self.api.get_account().equity)
  ```
  
  ### Describe an alternate solution.
  
  _No response_
  
  ### Anything else? (Additional Context)
  
  _No response_