Python学习笔记（十三）Python标准库

Python标准库是一组模块，安装的Python都包含它。

使用模块collections中的OrderedDict类，创建字典并记录其中的键值对的添加顺序。

from collections import OrderedDict

favorite_languages = OrderedDict()

favorite_languages['jen'] = 'python'
favorite_languages['sarah'] = 'c'
favorite_languages['edward'] = 'ruby'

for name, language in favorite_languages.items():
print(name.title() + "'s favorite language is " + language.title())

Reuslt：
  Jen's favorite language is Python
  Sarah's favorite language is C
  Edward's favorite language is Ruby

课后练习：掷筛子得到随机数
from random import randint

class Die(object):
"""docstring for Die"""
def __init__(self, sides = 6):
self.sides = sides

def rool_die(self):
num = randint(1 , self.sides)
print("your dice num is " + str(num))

dice = Die()
dice.rool_die()

Result：
 your dice num is 6