I have a couple of lists which vary in length, and I would like to compare each of their items with an integer, and if any one of the items is above said integer, it breaks
You can use the built-in function any like this:
for list in listoflists:
if any(x < 70 for x in list):
continue
The any function does short-circuit evaluation, so it will return True as soon as an integer in the list is found that meets the condition.
Also, you should not use the variable list, since it is a built-in function.