数据结构132+22

print('列表的方法')
list1 = [1,2,3,4,5,6,7,8]
print(list1)

list1.append(9)
print('append:',list1)

list1.insert(0,11)
print('insert：',list1)

list1.remove(7)
print('remove:',list1)

'排序相关'
list1.reverse()
print('reverse:',list1)

list1.sort()
print('sort:',list1)

list1.pop()
print('pop:',list1)

list1.pop()
print('pop1:',list1)

list1.pop()
print('pop2:',list1)

print('列表推导式')

vec = [2,4,6]

vec1 = [3*x for x in vec]
print('vec1:',vec1)

vec2 = [[x,x**2] for x in vec]
print('vec2:',vec2)

freshfruit = ['banana','loganberry','passion fruit']
weapon = [weapon.strip() for weapon in  freshfruit]
print('strip():',weapon)

vec3 = [x*3 for x in vec if x>3]
print('for与if：',vec3)

vec01 = [1,2,3]
vec02 = [4,5,6]
vec1201= [x*y for x in vec01 for y in vec02]
print('循环1',vec1201)

'这个句子怎么写呢'
# vec1202 = [vec01(i)*vec02(i) for i  in vec01(len(i))]
vec1202 = [vec01[i]*vec02[i] for i in range(len(vec01))]
print('vec1202:',vec1202)

'这个怎么写呢'
matrix = [[1,2,3,4,5],[6,7,8,9,10],[11,12,13,14,15]]
# matrix1 = [[range(i) for i in matrix] for i in range(5)]
matrix1 = [[row[i] for row in matrix] for i in range(4)]
print('matrix1:',matrix1)

a = [1,2,3,4,5,6,7,8]

del a[0]
print('del a[0]：',a)

t = 12345,54321,'hello'
print('t[0]:',t[0])
print('t:',t)
u = t,(1,2,3,4,5)
print('u:',u)

print('集合')

a = {'qwertyuiop'}
b = {'qwertyhjmrtyujk'}
print(type(a))
print(a)
'比较上下这两个创建的集合的区别'
c = set('qwertyuiop')
print(type(c))
print(c)


basket = {'apple','orange','apple','pear','orange','banana'}
# print(basket(0))#集合是无法通过下标索引来取值的
print('basket:',basket)

if 'orange' in basket:
    print(True)
else:
    print(False)


'集合的操作'
a = set('qwertyuiop')
b = set('qwertyhjmrtyujk')
print(a)
print(a-b)
print(a|b)
print(a&b)
print(a^b)


print('字典')
tel = {'jo1':111,'jo2':222,'jo3':333}

print(tel)
print(type(tel))

tel ['jo4']=444#字典是可变的，所以可直接这样赋值
print(tel)

# print(list(tel.keys()))
print(list(tel.keys()))

print(sorted(tel.keys()))


'字典的构造及推导'
dict1=([('sape', 4139), ('guido', 4127), ('jack', 4098)])
print(dict1,type(dict1))#<class 'list'

dict01=dict([('sape', 4139), ('guido', 4127), ('jack', 4098)])
print(dict1,type(dict01))#class 'dict',加上前面的关键字dic才是字典类型

dict2=[('sape', 4139), ('guido', 4127), ('jack', 4098)]
print(dict2,type(dict2))#<class 'list'>

dict3=('sape', 4139), ('guido', 4127), ('jack', 4098)
print(dict3,type(dict3))#<class 'tuple'>

'使用enumerate'
for i,v in enumerate(['tic','tac','toe']):
    print(i,v)

'使用zip()遍历多个序列'
questions = ['name','age','favorite color']
answers = ['Lily','25','green']
for q,a in zip(questions,answers):
    # print('what is your name{0}? It is{1}'.format(questions,answers))
    print('what is your {0}? It is {1}'.format(q, a))

'使用reversed()反向遍历'
for i in reversed(range(1,10,2)):
    print(i)
'使用sorted()进行顺序遍历'
basket = ['apple','orange','apple','pear','orange','banana']
print(type(basket))
for i in sorted(basket):
    print(i)
'set和list很像，因为set不是字典那种有key 、value的这种映射关系；但是，set里面的元素是无序的(因此不能通过索引取值)，而且不重复，这是和list不一样的地方。'
for i in sorted(set(basket)):
    print(i)