Default Argument Values: a simple demo，argumentvalues,# specify a
Default Argument Values: a simple demo，argumentvalues,# specify a
# 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) - Python functions are 'typeless'，python
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