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Python

Error: Couldn't find Student

class Student: name = "Your Name"

def __init__(self,  **kwargs):

    for key, value in kwargs.items():
        setattr(self, key, value)

def praise(self):
    return "You inspire me, {}".format(self.name)

def reassurance(self):
    return "Chin up, {}. You'll get it next time!".format(self.name)

def feedback(self, grade):
    if grade > 50:
        return self.praise()
    return self.reassurance()

new_student = Student(name = "Happy", course = "Computer Science")

The above code giving an error

Where as if I re-write the code as following it isn't giving any error. Could you please explain the difference. Please help.

class Student: name = "Your Name"

def __init__(self, name, **kwargs):
    self.name = name
    for key, value in kwargs.items():
        setattr(self, key, value)

def praise(self):
    return "You inspire me, {}".format(self.name)

def reassurance(self):
    return "Chin up, {}. You'll get it next time!".format(self.name)

def feedback(self, grade):
    if grade > 50:
        return self.praise()
    return self.reassurance()

new_student = Student(name = "Happy", course = "Computer Science")

1 Answer

Steven Parker
Steven Parker
243,173 Points

Both are valid class definitions, and the obvious difference is that the first code will create a new object instance without any parameters, but the second one will only work when the name is specified.

You didn't say what the circumstances were where you saw the error. I would expect the second one to be more likely to produce an error if an attempt was made to create an instance without passing parameters.