Python同时迭代多个序列的方法

> xpts = [1, 5, 4, 2, 10, 7]
> ypts = [101, 78, 37, 15, 62, 99]
> for x, y in zip(xpts, ypts):
...   print(x,y)
...
1 101
5 78
4 37
2 15
10 62
7 99
>

> a = [1, 2, 3]
> b = ['w', 'x', 'y', 'z']
> for i in zip(a,b):
...   print(i)
...
(1, 'w')
(2, 'x')
(3, 'y')
>

> from itertools import zip_longest
> for i in zip_longest(a,b):
...   print(i)
...
(1, 'w')
(2, 'x')
(3, 'y')
(None, 'z')

> for i in zip_longest(a, b, fillvalue=0):
...   print(i)
...
(1, 'w')
(2, 'x')
(3, 'y')
(0, 'z')
>

headers = ['name', 'shares', 'price']
values = ['ACME', 100, 490.1]

s = dict(zip(headers,values))

for name, val in zip(headers, values):
  print(name, '=', val)

> a = [1, 2, 3]
> b = [10, 11, 12]
> c = ['x','y','z']
> for i in zip(a, b, c):
...   print(i)
...
(1, 10, 'x')
(2, 11, 'y')
(3, 12, 'z')
>

> zip(a, b)
<zip object at 0x1007001b8>
> list(zip(a, b))
[(1, 10), (2, 11), (3, 12)]
>