Python syntax three

1. From Os.path Import exists

Import another very useful command exists. This command takes the file name string as an argument and returns True if the file exists, otherwise it will return False

Print "Does the output file exist? %r "% exists (To_file)

2. Use Def to create a new function

def print_two (*args):

Arg1, arg2 = args

Print "Arg1:%r, arg2:%r"% (arg1, arg2)

End the function definition with a colon, and then use the indentation of four spaces as part of the function's contents

Direct use: Print_two ("Zed", "Shaw")

3.

Python syntax three