Creating Simultaneous Loops in Python
loops, python
Solution
You can use `zip` to turn multiple lists (or iterables) into pairwise* tuples:
>>> for a,b in zip(xrange(10), xrange(10)):
... print a+b
...
0
2
4
6
8
10
12
14
16
18
But `zip` will not scale as well as `izip` (that sth mentioned) on larger sets. `zip`'s advantage is that it is a built-in and you don't have to `import itertools` -- and whether that is actually an advantage is subjective.
*Not just pairwise, but n-wise. The tuples' length will be the same as the number of iterables you pass in to `zip`.
Problem
I want to create a loop who has this sense: ``` for i in xrange(0,10): for k in xrange(0,10): z=k+i print z where the output should be 0 2 4 6 8 10 12 14 16 18 ```