滑动序列

"""
#复习
lst1 = [1,5]
lst2 = [2,6]
lst3 = [3,7]
lst4 = [4,8]
it = zip(lst1,lst2,lst3,lst4)
print(list(it))

# [(1, 2), (3, 4), (5, 6), (7, 8)]
# n = 2
lst1 = [1 , 3 , 5 , 7 ,9]   listvar[0::2] # 0 2 4 6 8 
lst2 = [2 , 4 , 6 , 8 ]     listvar[1::2]
it = zip(lst1,lst2)
print(list(it))

#listvar = [[1,2,3],[4,5,6],[7,8,9]]
n=3
lst1 = [1,4,7]  listvar[0::3] # 0 3 6 
lst2 = [2,5,8]  listvar[1::3]
lst3 = [3,6,9]  listvar[2::3]
it = zip(lst1,lst2,lst3)

#listvar = [[1,2,3,4],[5,6,7,8]]
lst1 = [1,5,9]    listvar[0::4] # 0 4 8
lst2 = [2,6]      listvar[1::4] 2 6
lst3 = [3,7]      listvar[2::4]
lst4 = [4,8]	  listvar[3::4]
it = zip(lst1,lst2,lst3,lst4)

range(4)
"""
# n = 2
# lst1 = [1 , 3 , 5 , 7 ,9]   #listvar[0::2] # 0 2 4 6 8 
# lst2 = [2 , 4 , 6 , 8 ]     #listvar[1::2]
# it = zip(lst1,lst2)
# print(list(it))
# zip(listvar[0::2],listvar[1::2])


listvar = [1,2,3,4,5,6,7,8,9]
n = 2
res = [listvar[i::n] for i in range(n)]
print(res)

n = 3
res = [listvar[i::n] for i in range(n)]
print(res)

n = 4
res = [listvar[i::n] for i in range(n)]
print(res)

# 把大列表当中的每一个小列表一个一个的拿出来当成zip的参数进行赋值
# 过程化版本
n = 5
it = zip(*[listvar[i::n] for i in range(n)])
print(list(it))

# 普通版本
def func(listvar,n):
	return zip(*[listvar[i::n] for i in range(n)])
res = func(listvar,2)
print(list(res))

# 优化版本
func = lambda listvar,n : zip(  *[  listvar[i::n] for i in range(n)  ]   )
it = func(listvar,3)
print(list(it))
‘‘‘
# 复习 * 和 ** 的魔术用法(是函数的调用处使用)
def func(a,b,c):
	print(a,b,c)
# 把列表当中的每一个元素,一个一个拿出来作为func的参数进行赋值;
listvar = [1,2,3]
func(*listvar)

def func(a=1,b=2,c=3):
	print(a,b,c)
dic = {‘a‘:10,"b":12,"c":13}
func(**dic) # a=10,b=12,c=13
‘‘‘