code: def requirements(self, requires):
          '''
          Sets the requirements for the package.
  
          It will take either a valid path to a requirements file or
          a list of requirements.
          '''
          if requires:
              if isinstance(requires, basestring) and \
                 os.path.isfile(os.path.abspath(requires)):
                  self._requirements_file = os.path.abspath(requires)
              else:
                  if isinstance(self._requirements, basestring):
                      requires = requires.split()
                  self._requirements_file = None
                  self._requirements = requires
          else:
              # If the default requirements file is found use that
              if os.path.isfile(self._requirements_file):
                  return
              self._requirements, self._requirements_file = None, Nonf requirements(self, requires):
          '''
          Sets the requirements for the package.
  
          It will take either a valid path to a requirements file or
          a list of requirements.
          '''
          if requires:
              if isinstance(requires, basestring) and \
                 os.path.isfile(os.path.abspath(requires)):
                  self._requirements_file = os.path.abspath(requires)
              else:
                  if isinstance(self._requirements, basestring):
                      requires = requires.split()
                  self._requirements_file = None
                  self._requirements = requires
          else:
              # If the default requirements file is found use that
              if os.path.isfile(self._requirements_file):
                  return
              self._requirements, self._requirements_file = None, None
docs: Sets the requirements for the package.
  
          It will take either a valid path to a requirements file or
          a list of requirements.