For loop printing memory location of class instead of list

Question

I have some code which seems to print [<__main__.TCar object at 0x0245C1B0>] but I want it to print the actual contents of the list.

class TCa         


        

Answer 1

You have to define either a __str__ method or a __repr__ method for that:

class TCar():
  def __init__(self, Make, Model, EngineSize, Price):
    self.Make = str(Make)
    self.Model = str(Model)
    self.EngineSize = float(EngineSize)
    self.Price = float(Price)

  def __repr__(self):
    return "".format(self.Make, self.Model, self.EngineSize, self.Price)

  def __str__(self):
    return "{0} {1}".format(self.Make, self.Model)

In a nutshell,

__repr__ is used if there's a need to display "raw" content of the object, it's the kind you see when you are displaying the list's contents, so if you have a list of cars, it would look like this:
[, ]

__str__ is used if you try to print the actual object, like print(TeslaCar) with TeslaCar being a TCar instance. It would give you something like "Tesla Model S".