联想win10系统 安装64位pygame

Microsoft Windows [版本 10.0.17763.1]
(c) 2018 Microsoft Corporation。保留所有权利。

C:\Users\26719>python
Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 22:22:05) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> exit()

C:\Users\26719>pip install pygame
Collecting pygame
  Downloading https://files.pythonhosted.org/packages/ed/56/b63ab3724acff69f4080e54c4bc5f55d1fbdeeb19b92b70acf45e88a5908/pygame-1.9.6-cp37-cp37m-win_amd64.whl (4.3MB)
    100% |████████████████████████████████| 4.3MB 55kB/s
Installing collected packages: pygame
Successfully installed pygame-1.9.6
You are using pip version 19.0.3, however version 19.2.3 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.

C:\Users\26719>python
Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 22:22:05) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import pygame
pygame 1.9.6
Hello from the pygame community. https://www.pygame.org/contribute.html
>>> scen =  pygame.display.set_mode([200,200])
>>> pygame.display.set_caption('我的窗口')
>>>
C:\Users\26719>python
Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 22:22:05) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> pygame.display.set_caption('我的窗口')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'pygame' is not defined
>>> scen =  pygame.display.set_mode([200,200])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'pygame' is not defined
>>> import pygame
pygame 1.9.6
Hello from the pygame community. https://www.pygame.org/contribute.html
>>> scen =  pygame.display.set_mode([200,200])
>>>
C:\Users\26719>