?? fig27_15.py
字號:
# Fig. 27.15: fig27_15.py
# A simple program that illustrates exceptions.
def getNumber():
while 1: # creates infinite loop
try:
theNumber = float( raw_input( "Enter a number: " ) )
return theNumber
except ValueError:
print "Value entered was not a number."
def divideNumbersString( x, y ):
try:
result = x / y
except ZeroDivisionError:
return "Cannot divide by zero!"
else:
return "The result of division is: %f" % result
number1 = getNumber()
number2 = getNumber()
print divideNumbersString( number1, number2 )
##########################################################################
# (C) Copyright 2001 by Deitel & Associates, Inc. and Prentice Hall. #
# All Rights Reserved. #
# #
# DISCLAIMER: The authors and publisher of this book have used their #
# best efforts in preparing the book. These efforts include the #
# development, research, and testing of the theories and programs #
# to determine their effectiveness. The authors and publisher make #
# no warranty of any kind, expressed or implied, with regard to these #
# programs or to the documentation contained in these books. The authors #
# and publisher shall not be liable in any event for incidental or #
# consequential damages in connection with, or arising out of, the #
# furnishing, performance, or use of these programs. #
##########################################################################
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