# Profile: Python basics. This demonstration catches and prints its planned failure.
import sys
import traceback

def hours_from_text(text):
    minutes = int(text)
    return minutes / 60

raw_minutes = "twenty"
try:
    print(hours_from_text(raw_minutes))
except ValueError:
    traceback.print_exc(file=sys.stdout)
    print("The demonstration stopped the invalid conversion; no hours were produced.")