Question

how can I retrieve 2 items from a loop at a time?

I have this list

lst = ['url1', 'value1', 'url2', 'value2', ... ]

I want to loop it and for every iteration I want to fetch 2 items.

for x in lst:
    x # here x loops 1 by one.

I am using bellow solution

for i in range(0, len(lst), 2):
    url = lst[i]
    val = lst[i+1]

I wan to know is there anything built in?

Answer 1

>>> lst = ['url1', 'value1', 'url2', 'value2']
>>> i = iter(lst)
>>> zip(i,i)
[('url1', 'value1'), ('url2', 'value2')]

or, probably more useful:

>>> i = iter(lst)
>>> dict(zip(i,i))
{'url1': 'value1', 'url2': 'value2'}