Chapter 7 Exercise Set 1: Doctest Exercises¶

In each of the following exercises, write Python code to make the doctests pass.

class Student:
    """
      >>> student = Student('Gizelle', 'Day', 11)
      >>> student.fname
      'Gizelle'
      >>> student.lname
      'Day'
      >>> student.grade
      11
    """

class Polynomial:
    """
      >>> p1 = Polynomial()
      >>> print(p1)
      '0'
      >>> p2 = Polynomial([3, 1, 5])
      >>> print(p2)
      '3x^2 + x + 5'
      >>> p3 = Polynomial([2, 3, 1, 5])
      >>> print(p3)
      '2x^3 + 3x^2 + x + 5'
      >>> p4 = Polynomial([2, 0, 3, 7, 2])
      >>> print(p4)
      '2x^4 + 3x^2 + 7x + 2'
    """

class Fraction:
    """
      >>> f1 = Fraction()
      >>> print(f1)
      0/1
    """

class Fraction:
    """
      >>> f1 = Fraction()
      >>> print(f1)
      0
      >>> f2 = Fraction(5)
      >>> print(f2)
      5
    """

class Fraction:
    """
      >>> f1 = Fraction()
      >>> print(f1)
      0
      >>> f2 = Fraction(5)
      >>> print(f2)
      5
      >>> f3 = Fraction(4, 5)
      >>> print(f3)
      4/5
      >>> f4 = Fraction(0, 5)
      >>> print(f4)
      0
      >>> f5 = Fraction(7, 5)
      >>> print(f5)
      7/5
    """

class Fraction:
    """
      >>> f1 = Fraction()
      >>> print(f1)
      0
      >>> f2 = Fraction(5)
      >>> print(f2)
      5
      >>> f3 = Fraction(4, 5)
      >>> print(f3)
      4/5
      >>> f4 = Fraction(0, 5)
      >>> print(f4)
      0
      >>> f5 = Fraction(7, 5)
      >>> print(f5)
      7/5
      >>> f6 = Fraction(12, 16)
      >>> print(f6)
      3/4
      >>> f7 = Fraction(60, 84)
      >>> print(f7)
      5/7
    """