Why do you have to put [] inside the parentheses of "\n".join([]) ??

Question

class SpecialString:
def __init__(self, cont):
self.cont = cont

def __truediv__(self, other):
line = "=" * len(other.cont)
return "\n".join([self.cont, line, other.cont])

spam = SpecialString("spam")
hello = SpecialString("Hello world!")
print(spam / hello)

Answer 1

If you looked up the doc, you'd find that the argument of the join-method needs to be an iterable, for example a list

Answer 2

Thanks Lisa ❤️❤️❤️