|
# specify a default value for one or more arguments.
# This creates a function that can be called with fewer arguments than it is defined
# to allow. For example:
def ask_ok(prompt, retries=4, complaint='Yes or no, please!'):
while True:
ok = raw_input(prompt)
if ok in ('y', 'ye', 'yes'): return True
if ok in ('n', 'no', 'nop', 'nope'): return False
retries = retries - 1
if retries < 0: raise IOError, 'refusenik user'
print complaint
#This function can be called either like this:
ask_ok('Do you really want to quit?')
# or like this:
ask_ok('OK to overwrite the file?', 2)
|
