“for loop” with two variables? [duplicate]

Answer 1

"Python 3."

Add 2 vars with for loop using zip and range; Returning a list.

Note: Will only run till smallest range ends.

>>>a=[g+h for g,h in zip(range(10), range(10))]
>>>a
>>>[0, 2, 4, 6, 8, 10, 12, 14, 16, 18]

Answer 2

I think you are looking for nested loops.

Example (based on your edit):

t1=[1,2,'Hello',(1,2),999,1.23]
t2=[1,'Hello',(1,2),999]

t3=[]

for it1, e1 in enumerate(t1):
    for it2, e2 in enumerate(t2):
        if e1==e2:
            t3.append((it1,it2,e1))

# t3=[(0, 0, 1), (2, 1, 'Hello'), (3, 2, (1, 2)), (4, 3, 999)]

Which can be reduced to a single comprehension:

[(it1,it2,e1) for it1, e1 in enumerate(t1) for it2, e2 in enumerate(t2) if e1==e2] 

But to find the common elements, you can just do:

print set(t1) & set(t2)
# set([(1, 2), 1, 'Hello', 999])

If your list contains non-hashable objects (like other lists, dicts) use a frozen set:

from collections import Iterable
s1=set(frozenset(e1) if isinstance(e1,Iterable) else e1 for e1 in t1)
s2=set(frozenset(e2) if isinstance(e2,Iterable) else e2 for e2 in t2)
print s1 & s2