# 1. Have you ever felt debugging involved a bit of luck? The following program has a bug. Try to identify the bug and fix it.

def has_lucky_number(nums):
    """Return whether the given list of numbers is lucky. A lucky list contains
    at least one number divisible by 7.
    """
    for num in nums:
        if num % 7 == 0:
            return True
        else:
            return False

# 2.
# a. Look at the Python expression below. What do you think we'll get when we run it? When you've made your prediction, uncomment the code and run the cell to see if you were right.
#[1, 2, 3, 4] > 2

# b. If you have used R or certain Python libraries like numpy or pandas, you might have expected that when we ran the above code, Python would compare each element of the list to 2 (i.e. do an element-wise comparison) and give us a list of booleans like [False, False, True, True].
#Implement a function that reproduces this behaviour, returning a list of booleans corresponding to whether the corresponding element is greater than n.
def elementwise_greater_than(L, thresh):
    """Return a list with the same length as L, where the value at index i is
    True if L[i] is greater than thresh, and False otherwise.

    >>> elementwise_greater_than([1, 2, 3, 4], 2)
    [False, False, True, True]
    """
    pass

# 3. Complete the body of the function below according to its docstring
def menu_is_boring(meals):
    """Given a list of meals served over some period of time, return True if the
    same meal has ever been served two days in a row, and False otherwise.
    """
    pass