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'

4.

>>> len('')
0

6. Doe, John

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