import abc as aa #导入模块
from aifc import _read_long as fd
from datetime import *
import json
import unittest
print("Hello World!")#打印Hello World！
i=5 #直接使用变量 无需声明
s="hello"
print(str(i)+"."+s) #函数str将其他类型转成字符串
print(s.title()+" "+s.lower()+" "+s.upper())
print(" hello"+" "+" hello".lstrip()) #lstrip函数删除左边空格 类似还有rstrip strip
print(3/2) #python3里 3/2等于1.5
players=['kobe', 'james', 'harden'] #列表
print(players)
print(players[1]) #类似于数组，包括索引从0开始
players[2]='westbrook'
print(players)
players.append('harden') #在列表末尾添加
print(players)
players.insert(2,'simons') #在列表中插入
print(players)
del players[3] #删除
print(players)
p=players.pop() #类似栈的弹出
q=players.pop()
print(p+" "+q)
d=players.pop(1) #指定位置弹出
print(d)
players.remove('kobe') #删除
print(players)
cars=['bmw', 'audi', 'toyota', 'subaru']
cars.sort() #排序
print(cars)
cars.sort(reverse=True)
print(cars)
print(sorted(cars)) #临时排序
print(cars)
cars.reverse() #倒叙
print(cars)
print(len(cars)) #列表长度
for car in cars: #for循环
print(car)
for a in range(5): #生成0-4的数字
print(a)
numbers=list(range(4)) #函数list将range产生的数字转化为列表
print(numbers)
print(numbers[1:3]) #列表的切片
print(numbers[2:])
copynum=numbers[:] #复制列表要使用切片
print(copynum)
dimensions=(200, 50) #元组 无法直接给元组的元素赋值
print(dimensions[0])
dimensions=(200, 100) #要改变元组元素 要重新定义整个元组
print(dimensions)
print('bmw' in cars) #是否包含在列表中
print('audi' not in cars)
people_0={'sex':'man', 'name':'kobe'} #字典
print(people_0['sex'])
people_1={} #创建空字典
people_1['height']=167 #添加键值对
people_1['weight']=58
print(people_1)
people_1['height']=226
print(people_1)
del people_1['height'] #删除键值对
print(people_1)
for k,v in people_0.items(): #循环遍历
print(k+" "+v)
for k in people_1.keys():
print(k)
man_1={'money':12, "house":2}
man_2={'money':22, "house":4}
man_3={'money':18, "house":0}
men=[man_1, man_2, man_3] #字典列表
for m in men:
print(m['money'],m['house'])
print(m.items())
print(m)
cars={ #字典中存储列表
'type':'bus',
'rate':50,
'people':['kobe','james','simos']
}
for car in cars.items():
print(car)
for p in cars['people']:
print(p)
nba={ #字典中嵌套字典
'thunder':{
'pg':'westbrook',
'sg':'roberson',
'sf':'geoger',
'pf':'antony',
'c':'adams',
},
'76ers':{
'pg':'simons',
'sg':'redick',
'sf':'covington',
'pf':'saric',
'c':'embid',
},
}
n=0
while n<=10:
print(n)
n+=1
n=0
while n<10:
print(n)
n+=2
if n==4:
continue
if n==6:
break
for a in nba.items(): #嵌套字典的遍历
for b in a:
print(b)
#msg=input('please input a message: ') #字符串的输入
#print(msg)
#num=input('please input a number: ') #数字的输入
#num=int(num)
#print(num)
def hello(): #定义和调用函数
print("hello world")
hello()
def pri(msg):
print(msg)
pri('Hello')
def test(a,b):
print(a,b)
test(b='hh',a='aa') #关键字实参
def te(a,b='abc'): #参数默认值
return(a,b)
print(a,b)
te('gg')
te('gg','kk')
def rr(a): #函数无需声明返回值
return a+5
cc=rr(5)
print(cc)
def list(m): #传入列表
for mm in m:
print(mm)
list(men)
list(men[:]) #禁止函数对列表的修改 即传入切片
def abc(*a): #可传入任意数量实参
for k in a:
print(k)
abc(1,2,5,8)
class dog(): #类
"""文档注释"""
def __init__(self,name,sex): #相当于构造器 注意前后是两个下划线
self.name=name #self相当于java的this
self.sex=sex
def fun(self):
print("I an funny")
mydog=dog('kevin','woman')
print(mydog.name+" "+mydog.sex)
mydog.fun()
class bigdog(dog):
def __init__(self,name,sex,age):
super().__init__(name,sex) #调用父类构造器
self.age=age
def fun(self): #重写父类方法
print("I am happy")
mybigdog=bigdog('kevin','woman',28)
print(mybigdog.age)
mybigdog.fun()
with open('abc.txt')as afile: #打开文件
contents=afile.read()
print(contents.strip())
with open('abc.txt')as afile:
for line in afile:
print(line.strip())
with open('abc.txt')as afile:
s=""
for line in afile:
s+=line.strip()
print(s)
with open('pi.txt')as pifile: #写入文件
content=pifile.read().strip()
print(content[:100])
with open('gg.txt','w')as myfile:
myfile.write("I love you")
with open('gg.txt','a')as myfile:
myfile.write("\nhaha")
try: #异常处理
print(5/0)
except ZeroDivisionError:
print('no you can not do this')
else:
pass
with open('test.json','w')as mytest: #存储数据
json.dump("哈哈哈",mytest)
with open('test.json')as mytest:
str=json.load(mytest)
print(str)
class testme(unittest.TestCase):
def test_fu(self):
sss=te("kk")
self.assertEqual(sss,'kkabc')
unittest.main()
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