按顺序打印列表元素作为变量

Question

I have a list like so:

>>> mylist=['a', 'b', 'c', 'd', 'e']

I want to print statement in the following format.

>>> q=('%mylist% OR ' * len(mylist))[:].strip().rstrip('OR').strip()

The output of q is:

>>> '%mylist% OR %mylist% OR %mylist% OR %mylist% OR %mylist%'

But I want really do this:

'%a% OR %b% OR %c% OR %d% OR %e%'

How can I have this output?

I mean I want to do something like:

'%mylist[0]% OR %mylist[1]% OR %mylist[2]% OR %mylist[3]% OR %mylist%[4]'

Answer 1

Use list comprehension and join

>>> l = ['a', 'b', 'c', 'd', 'e']
>>> ' OR '.join(['%' + i + '%' for i in l])
'%a% OR %b% OR %c% OR %d% OR %e%'
>>> ' OR '.join('%' + i + '%' for i in l)
'%a% OR %b% OR %c% OR %d% OR %e%'

Answer 2

>>> l = ['a', 'b', 'c', 'd', 'e']
>>> s = ""
>>> import re
>>> for i in l:
        s += ("%"+i+"% OR ")
>>> res = re.sub(r"(.*)OR\s*$", r"\1", s)
>>> print res
%a% OR %b% OR %c% OR %d% OR %e%