
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Transcribed Image Text:Imagine that you want to define a class for fractional numbers, e.g., 4. Fill in the three blanks in the following code to make
it a correct definition of a Fraction class.
class Fraction:
def _init_(self, numerator, denominator):
self.n = numerator
= denominator
def
str_(self):
(str(self.n) + "/" + str(self.d))
def getnum(self):
return(self.n)
def setnum(self, numerator):
self.n = numerator
def getden(self):
return(self.d)
def setden(self, denominator):
= denominator
O self.d, return, self
O self.d, return, self.d
O return, print, self.n
O self.d, print, self.n
O n.getnum(self), return, d.getd(self)
MacBook Pro
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Transcribed Image Text:If your program defines an object-class and you want objects of the class to display their attributes, what method must you
define in the class?
O display(self)
O print(self)
O _str_(self)
O str(self)
_init_(str)
Question 22
Fill in the blanks so the following code doesn't crash if a user enters an invalid value for temperature.
again = True
while again:
MacBook Pro
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