'''
    DS2500
    Spring 2025
    Sample code from lecture - 1/10/25

    In class today, we are writing a function to:
    - take in a dictionary as its only parameter
    - find the max value in the dictionary
    - return the key, value for the max (as a tuple!)
'''

def dct_max(dct):
    '''
        parameters: one dictionary with numeric values
        returns: tuple with two items, key and value
        does: finds the max value in the given dictionary,
                returns the value and its key
    '''
    max_value = float("-inf")
    max_key = ""
    for key, value in dct.items():
        if value > max_value:
            max_value = value
            max_key = key
    return (max_key, max_value)

def sum_lst(lst):
    '''
        parameters: list of strings that could be floats
        returns: a float
        does: converts elements to float, skipping empty strings,
              and sums the values
    '''
    total = 0
    for num in lst:
        if num != "":
            total += float(num)
    return total

def main():
    # Call our dct_max function to make sure it works
    # it should
    dct = {"a" : 1, "b" : 13, "c" : 8}
    key, val = dct_max(dct)
    print(f"The max in our dictionary is {key}, {val}")

    # Call our sum_lst function to make sure it works!
    # it should return 7.7
    lst = ["1.4", "2.8", "", "3.5"]
    total = sum_lst(lst)
    print(f"The sum of our list, once coverted is {total}")

    # One more example from the slides
    # Turn a lst [x, y, z, w] into a key, value
    # pair of a dictionary {x : [y, z, w]}
    dct = {}
    lst = [4, 6, 8, 10, 12]
    dct[lst[0]] = lst[1:]
    print(f"This should print 4 : [6, 8, 10, 12]... {dct}")

if __name__ == "__main__":
    main()