Processing Command Line parameters in Python

Use getopt. getopt ()
To analyze command line parameters
Number.
Getopt is a module used to analyze command line parameters.

Functions in the module:
Getopt (ARGs, options [, long_options]) ARGs is generally SYS. argv [1:]. Options is a string consisting of option letters (starting with "-"). If an option letter carries a parameter, the letter must contain. Long_options is an optional parameter. It is a string list used to indicate a long parameter (starting with "--"). If a long parameter has a parameter
Enter "=" after the letter ". The function has two returned results:
The first one is (option,
Value. Option is an option letter with "-" or a long parameter with "--" (for example, -- HL can match -- Help ). For example
If option has a parameter, it is given in value; otherwise, value is null.

The second is the parameter not matched by the function. Example in the python document:
Import getopt, sys
Def
Main ():
Try:
Opts, argS = getopt. getopt (SYS. argv [1:],
"Ho: V", ["help", "output ="])
Counter t getopt. getopterror:

# Print help information and exit:
Usage ()

SYS. Exit (2)
Output = none
Verbose = false
For O,
In opts:
If O = "-V ":
Verbose = true

If O in ("-h", "-- Help "):
Usage ()

SYS. Exit ()
If O in ("-o", "-- output "):
Output =
A
#...
If _ name _ = "_ main __":
Main ()
If the program is called in this way
: Python program name. py-h-o ABC -- out def Ghi
The result returned by the getopt. getopt () function is roughly as follows:
.
(Option, value) in list is:
[('-H', ''), ('-O', 'abc'), ('-- output ',
'Def ')]
In ARGs:
['Ghi']