Python: Unable to call function within a seperate function? (undefined name 'getItemClassiness')

Question

For some reason the getClassiness Function does not work as it is not able to call the helper function getItemClassiness. Is there any reason this might be? Thanks!

class Classy(object):
    def __init__(self):
        self.items = []
    
    def addItem(self, item):
        self.items.append(item)
        
    def getItemClassiness(item):
        if item == "tophat":
            return 2
        if item == "bowtie":
            return 4
        if item == "monocle":
            return 5
        return 0
    
    
    def getClassiness(self):
        total = 0
        for item in self.items:
            x = getItemClassiness(item)
            total += x
        return total

# Test cases

me = Classy()

# Should be 0
print(me.getClassiness())


# Should be 2
me.addItem("tophat")
print(me.getClassiness())

me.addItem("bowtie")
me.addItem("jacket")
me.addItem("monocle")
print(me.getClassiness())
# Should be 11


me.addItem("bowtien")
print(me.getClassiness())
# Should be 15

You can use this class to represent how classy someone or something is. "Classy" is interchangable with "fancy". If you add fancy-looking items, you will increase your "classiness". Create a function in "Classy" that takes a string as input and adds it to the "items" list. Another method should calculate the "classiness" value based on the items. The following items have classiness points associated with them: "tophat" = 2 "bowtie" = 4 "monocle" = 5 Everything else has 0 points. Use the test cases below to guide you!

Asked By: SDC123

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Source

Answer 1

In line 21 call for a class method is made without using the self keyword.

 x = self.getItemClassiness(item)

Similarly on line 8 in self keyword is required with as parameter for function definition of getItemClassiness

def getItemClassiness(self, item):

Answered By: Excited Electron

Answer 2

You should declare getItemClassiness as a static method because it doesn’t require a specific instance. Then you can call the function as you would an instance method.

    @staticmethod
    def getItemClassiness(item):
        ...
    
    
    def getClassiness(self):
        ...
        for item in self.items:
            x = self.getItemClassiness(item)

But still it won’t give you 15 for the last test case, because "bowtie" != "bowtien". If you intend to ignore white space at the start or the end of the string, use str.strip().

Answered By: Edward Ji

Answer 3

Here is what I did using Static Method. Got the right output in Test Cases.

class Classy(object):
    def __init__(self):
        self.items = []
        
    def addItem(self, item):
        self.items.append(item)
        
    @staticmethod
    def getItemClassiness(item):
        if item == "tophat":
            return 2
        if item == "bowtie":
            return 4
        if item == "monocle":
            return 5
        return 0
    
    
    def getClassiness(self):
        total = 0
        for item in self.items:
            x = self.getItemClassiness(item)
            total += x
        return total

Answered By: Vic

Answer 4

 class Classy(object):
def __init__(self):
    self.items = []

def addItem(self, string):
    self.items.append(string)
    
def getClassiness(self):
    sum = 0
    for item in self.items:
        if (item == "tophat"):
            sum += 2
        elif (item == "bowtie"):
            sum += 4
        elif (item == "monocle"):
            sum += 5
        else:
            sum += 0
    return sum

Answered By: Bhavya

Python: Unable to call function within a seperate function? (undefined name 'getItemClassiness')

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