Why doesnt this work. (Pygame)

Pgame.py ::
#!/usr/bin/env python
# Pygame Basics
_image_game_backround = "background.jpg"
_image_mouse_pointer = "pointer.png"
_image_game_paddle = "paddle.jpg"
_image_game_char = "char.gif"
##
### Imports
##
import colors
from player import *
import pygame
import sys
import random
from math import *
from pygame.locals import *
from datetime import datetime

##
### Pygame Essentials
##
pygame.init()
screen = pygame.display.set_mode((640,480),0,32)
py_pointer = pygame.image.load(_image_mouse_pointer).convert_alpha()
py_bg = pygame.image.load(_image_game_backround).convert()
py_clock = pygame.time.Clock()
#
#Variables
#

#Futer Character
_player = Player(100)
#Paddle
_paddle_pos_x,_paddle_pos_y = 0,0
_paddle = pygame.image.load(_image_game_paddle).convert()
_current_pos_x,_current_pos_y = 0,0

#Ball(SQuare)
_ball_pos_x,_ball_pos_y = 320,240
_ball_current_x, _ball_current_y = 0,0
_ball = pygame.image.load(_image_mouse_pointer).convert()
_ball_decision_x = 0
_ball_decision_y = 0
#
## Starting Infinite Loop
#

while True:
#Basic Setup
screen.blit(py_bg,(0,0))
py_clock.tick(100)
for event in pygame.event.get():
if event.type == QUIT:
pygame.quit()
sys.exit()
if event.type == KEYDOWN:
if event.key == K_LEFT:
_current_pos_x -=1
elif event.key == K_RIGHT:
_current_pos_x +=1
elif event.key == K_UP:
_current_pos_y -=1
elif event.key == K_DOWN:
_current_pos_y +=1
if event.type == KEYUP:
if event.key == K_LEFT:
_current_pos_x = 0
elif event.key == K_RIGHT:
_current_pos_x = 0
elif event.key == K_UP:
_current_pos_y = 0
elif event.key == K_DOWN:
_current_pos_y = 0
_paddle_pos_x += _current_pos_x
_paddle_pos_y += _current_pos_y
screen.blit(_paddle,(0,_paddle_pos_y))

#ball
_ball_decision_x = random.randint(1, 12)
_ball_decision_y = random.randint(1, 12)
if _ball_decision_x <= 6:
_ball_pos_x += 1
if _ball_pos_x < 1:
_ball_pos_x += 5
elif _ball_decision_x >= 5:
_ball_pos_x -= 1
if _ball_pos_x < 1:
_ball_pos_x += 5
if _ball_decision_y <= 5:
_ball_pos_y += 1
if _ball_pos_y < 1:
_ball_pos_y += 5
elif _ball_decision_y >= 5:
_ball_pos_y -= 1
if _ball_pos_y < 1:
_ball_pos_y += 5
screen.blit(_ball,(_ball_pos_x,_ball_pos_y))
#that was a nice loop wasnt it.
_player.show
pygame.display.update()

player.py

#!/usr/bin/env python
import pygame
screen = pygame.display.set_mode((640,480),0,32)
class Player(pygame.sprite.Sprite):
def __init__(self, _xpos):

# pygame.sprite.Sprite.__init__(self)
self.prevpos = (0, 0, 0, 0)
self.image = pygame.image.load('char.gif').convert_alpha()
self.rect = self.image.get_rect()
self.rect.x = _xpos
self.x,self.y = 0,0
self.mx,self.my = 200,200
screen.blit(self.image,(self.mx,self.my))
pygame.display.update()
def show():
screen.blit(self.image,(self.mx,self.my))


And for good measure colors.py
#!/usr/bin/env python
grey = (84,84,84)
skyblue = (185,211,238)
black = (0,0,0)
blue = (0,0,255)
green = (34,139,34)
yellow = (255,255,0)
brown = (139,69,19)
orange = (255,140,0)
pink = (255,192,203)

I figured it would show my images and have the char at 200,200 on the screen and he would stay and that would be consistent but he doenst show up and ive been stuck here forever.