class_docstr: A no slippage model.
code: def calculatePrice(self, order, price, quantity, bar, volumeUsed):
      return price
  
file_path: pyalgotrade/pyalgotrade/broker/slippage.py
imports: import abc
  import six
label_desc: Use image node_id 1 for calling the NoSlippage obj's underlying member method code with example usage: obj.calculatePrice(order, price, quantity, bar, volumeUsed) and returns: price