Working with Text

1.

   a.'ComputerScience'
   b."Darwin's"
   c.'H2OH2OH2O'
   d.''

2.

   a. "They'll hibernate during the winter."
   b. '"Absolutely not," he said.'
   c. '''"He said, 'Absolutely not,'" recalled Mel.'''
   d. 'hydrogen sulfide'
   e. 'left\\right'

3.

   'A\nB\nC'

4.

>>> len('')
0

5.

   a. print('The rabbbit is ' + str(x) + '.')
   b. print('The rabbbit is', x, 'years old.')
   a. print(y, 'is average.')
   a. print(y, '*', x)
   a. print(str(y) + ' * ' + str(x) + ' is ' + str(y * x) + '.')

6. Doe, John

7.

num = float(input())
print(num)

8.

def repeat(s, n):
    """ (str, int) -> str

    Return s repeated n times; if n is negative, return the empty string.

    >>> repeat('yes', 4)
    'yesyesyesyes'
    >>> repeat('no', 0)
    ''
    >>> repeat('no', -2)
    ''
    >>> repeat('yesnomaybe', 3)
    'yesnomaybeyesnomaybeyesnomaybe'
    """ 

    return s * n

9.

def total_length(s1, s2):
    """ (str, str) -> int

    Return the sum of the lengths of s1 and s2.

    >>> total_length('yes', 'no')
    5
    >>> total_length('yes', '')
    3
    >>> total_length('YES!!!!', 'Noooooo')
    14
    """ 

    return len(s1) + len(s2)