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Python

Ashley Keeling
Ashley Keeling
11,476 Points
Posted by Ashley Keeling
Ashley Keeling
11,476 Points

how do you make instances in a function ?

does this have to be a class? do you have to split the list up and then add it together ?

instances.py 
def combiner(random):
James Reinhold
James Reinhold
12,361 Points 
def combiner(list):
    num = 0
    str = []
    for item in list: 
        if isinstance(item, int):
           num += item
        elif isinstance(item, float):
            num += item
        else: 
            str.append(item)

    return "{}{}".format("".join(str), num)

1 Answer

Jeff Muday
MOD
Jeff Muday
Treehouse Moderator 28,716 Points
Jeff Muday
Jeff Muday
Treehouse Moderator 28,716 Points

James' code will pass the challenge, but you have to be careful with naming a list "list" and a string "str" because it can cause problems in some python compilers, so I offer a slightly alternate version of James' code. 

def combiner(mylist):
    mystrings = []
    mysum = 0
    for item in mylist:
        if isinstance(item,int) or isinstance(item,float):
            mysum += item
        elif isinstance(item,str):
            mystrings.append(item)
        else:
            raise ValueError # in case an item comes through that is neither number nor string

    return "{}{}".format("".join(mystrings), mysum)