Examining the List for the Maximum

(Menu)   A   B   C   D   E   F   G   H   I

The normal code is put in a try() block.
maxFloat() is set to the first number in the list.
All the other items are inspected. Any higher value replaces maxFloat().
myFloats = [4.5, 2.6, 3.8, 3.5, 1.0, 5.7]
try:
    maxFloat = myFloats[0]
    for item in myFloats:
        if item > maxFloat:
            maxFloat = item
    print("Maximum is", maxFloat)
except:
    print("Maximum is undefined.")
       
5.7
If the search for a maximum fails for any reason()
  an exception is raised and reported but the program doesn't crash.