17.12.2019

'''Module provides basic functionality of fibonacci'''

def fibonacci(n):
    '''Return nth fibonacci number.

    Extended desc

    >>> fibonacci(0)
    0
    >>> fibonacci(1)
    1
    >>> fibonacci(2)
    1
    >>> fibonacci(7)
    13
    >>> fibonacci(3)
    2
    '''

    a, b = 0, 1
    for i in range(n):
        a, b = b, a + b
    return a
    pass

if __name__ == '__main__':
    import doctest
    doctest.testmod()

def fibonacci2(n):
    '''Return list of first fibonacci number.

    Ext desc'''
    pass

----------------------------------------------------

'''Module provides basic functionality of fibonacci'''

def fibonacci(n):
    '''Return nth fibonacci number.

    Extended desc

    Examples
    --------
    >>> fibonacci(0)
    0
    >>> fibonacci(1)
    1
    >>> fibonacci(2)
    1
    >>> fibonacci(7)
    13
    >>> fibonacci(3)
    2
    '''

    a, b = 0, 1
    for i in range(n):
        a, b = b, a + b
    return a
    pass

def print_fibonacci(n):
    '''Print list of first fibonacci number.

    Extended description

    Examples
    --------
    >>> print_fibonacci(2)
    0
    1
    >>> print_fibonacci(4)
    0
    1
    1
    2
    >>> print_fibonacci(6)
    0
    1
    1
    2
    3
    5
    >>> print_fibonacci(20)
    0
    1
    ...
    4181'''

    a, b = 0, 1
    for i in range(n):
        print(a)
        a, b = b, a + b

def fibonacci_list(n):
    '''Print list of first fibonacci number.

    Extended description

    Examples
    --------
    >>> fibonacci_list(2)
    [0, 1]
    >>> fibonacci_list(4)
    [0, 1, 1, 2]
    >>> fibonacci_list(6)
    [0, 1, 1, 2, 3, 5]
    >>> fibonacci_list(20)
    [0, 1, ..., 4181]'''

    a, b = 0, 1
    b = []
    for i in range(n):
        b.append(a)
        a, b = b, a + b

    return b

if __name__ == '__main__':
    import doctest
    #doctest.testmod()
    doctest.testmod(optionflags=doctest.ELLIPSIS)