class Color(object):
    def __init__(self, r, g, b):
        self.r = r
        self.g = g
        self.b = b


class Line(object):
    def __init__(self, name, api_code, bg_color, fg_color):
        self.name = name
        self.api_code = api_code
        self.bg_color = bg_color
        self.fg_color = fg_color

        self.stations = set()

    def __repr__(self):
        return self.name
    __unicode__ = __repr__


class Station(object):
    def __init__(self, name, api_code):
        self.name = name
        self.api_code = api_code

        self.connections = {}

    def __repr__(self):
        return self.name
    __unicode__ = __repr__

    @property
    def lines(self):
        return self.connections.keys()

class Map(object):
    pass

class Color(object):
    def __init__(self, r, g, b):
        self.r = r
        self.g = g
        self.b = b

    def __repr__(self):
        return '%s,%s,%s' % (self.r, self.g, self.b)
    __unicode__ = __repr__


class Line(object):
    def __init__(self, name, api_code, bg_color, fg_color):
        self.name = name
        self.api_code = api_code
        self.bg_color = bg_color
        self.fg_color = fg_color

        self.stations = set()

    def __repr__(self):
        return self.name
    __unicode__ = __repr__


class Station(object):
    def __init__(self, name, api_code):
        self.name = name
        self.api_code = api_code

        self.connections = {}

    def __repr__(self):
        return self.name
    __unicode__ = __repr__

    @property
    def lines(self):
        return self.connections.keys()

class Map(object):
    pass

Add string representation for colors
Add string representation for colors

  class Color(object):
      def __init__(self, r, g, b):
          self.r = r
          self.g = g
          self.b = b
+ 
+     def __repr__(self):
+         return '%s,%s,%s' % (self.r, self.g, self.b)
+     __unicode__ = __repr__
  
  
  class Line(object):
      def __init__(self, name, api_code, bg_color, fg_color):
          self.name = name
          self.api_code = api_code
          self.bg_color = bg_color
          self.fg_color = fg_color
  
          self.stations = set()
  
      def __repr__(self):
          return self.name
      __unicode__ = __repr__
  
  
  class Station(object):
      def __init__(self, name, api_code):
          self.name = name
          self.api_code = api_code
  
          self.connections = {}
  
      def __repr__(self):
          return self.name
      __unicode__ = __repr__
  
      @property
      def lines(self):
          return self.connections.keys()
  
  class Map(object):
      pass
  
Add string representation for colors
## Code Before:
class Color(object):
    def __init__(self, r, g, b):
        self.r = r
        self.g = g
        self.b = b


class Line(object):
    def __init__(self, name, api_code, bg_color, fg_color):
        self.name = name
        self.api_code = api_code
        self.bg_color = bg_color
        self.fg_color = fg_color

        self.stations = set()

    def __repr__(self):
        return self.name
    __unicode__ = __repr__


class Station(object):
    def __init__(self, name, api_code):
        self.name = name
        self.api_code = api_code

        self.connections = {}

    def __repr__(self):
        return self.name
    __unicode__ = __repr__

    @property
    def lines(self):
        return self.connections.keys()

class Map(object):
    pass

## Instruction:
Add string representation for colors
## Code After:
class Color(object):
    def __init__(self, r, g, b):
        self.r = r
        self.g = g
        self.b = b

    def __repr__(self):
        return '%s,%s,%s' % (self.r, self.g, self.b)
    __unicode__ = __repr__


class Line(object):
    def __init__(self, name, api_code, bg_color, fg_color):
        self.name = name
        self.api_code = api_code
        self.bg_color = bg_color
        self.fg_color = fg_color

        self.stations = set()

    def __repr__(self):
        return self.name
    __unicode__ = __repr__


class Station(object):
    def __init__(self, name, api_code):
        self.name = name
        self.api_code = api_code

        self.connections = {}

    def __repr__(self):
        return self.name
    __unicode__ = __repr__

    @property
    def lines(self):
        return self.connections.keys()

class Map(object):
    pass
