code: def _pip_cmd(self, name=None, prefix=None):
          
          if (name and prefix) or not (name or prefix):
              raise TypeError("conda pip: exactly one of 'name' ""or 'prefix' "
                              "required.")
  
          if name and self.environment_exists(name=name):
              prefix = self.get_prefix_envname(name)
  
          if sys.platform == 'win32':
              python = join(prefix, 'python.exe')  # FIXME:
              pip = join(prefix, 'pip.exe')        # FIXME:
          else:
              python = join(prefix, 'bin/python')
              pip = join(prefix, 'bin/pip')
  
          cmd_list = [python, pip]
  
          return cmd_list
docs: Get pip location based on environment `name` or `prefix`.