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[pygame] Rect() not imported



Hello everybody! :)

I'm reading some code from pygame's web and I found something that I
don't really understand. I'll really apreciate your help ;)

###########
import sys, os
import random

import pygame
from pygame.locals import *

class Player(pygame.sprite.Sprite):

    def __init__(self):

        pygame.sprite.Sprite.__init__(self, self.containers)
        self.image = pygame.Surface((16, 64))
        self.image.fill((255, 255, 255), (2, 0, 12, 64))
        self.image.fill((255, 255, 255), (0, 2, 16, 60))
        self.rect = self.image.get_rect(midleft = (16, 240))
        self._rect = pygame.Rect(self.rect) #######HERE IS THE
PROBLEM************

    def update(self):
        self._rect = Rect(self.rect)

        key = pygame.key.get_pressed()
        if key[K_UP]:
            self.rect.move_ip(0, -5)
        if key[K_DOWN]:
            self.rect.move_ip(0, 5)

        if self.rect.bottom > 480:
            self.rect.bottom = 480
        if self.rect.top < 0:
            self.rect.top = 0


This is all the imports and a class from the game PyPong.pyw. It works
perfectly for me, but I don't _understand_ how the function Rect works
if here, the module pygame is imported with import pygame, not import
* from pygame.

I used python help and I only found help about:
pygame.Rect()
But I still don't understand why does it works. Cloud anyone explain it to me?

Thanks a lot.