Python provides a getopt module that helps you parse command-line options and arguments.
$ python test.py arg1 arg2 arg3
The Python sys module provides access to any command-line arguments via the sys.argv. This serves two purpose:
- sys.argv is the list of command-line arguments.
- len(sys.argv) is the number of command-line arguments.
Here sys.argv[0] is the program ie. script name.
Example:
Consider the following script test.py:
#!/usr/bin/python import sys print 'Number of arguments:', len(sys.argv), 'arguments.' print 'Argument List:', str(sys.argv)
Now run above script as follows:
$ python test.py arg1 arg2 arg3
This will produce following result:
Number of arguments: 4 arguments. Argument List: ['test.py', 'arg1', 'arg2', 'arg3']
NOTE: As mentioned above, first argument is always script name and it is also being counted in number of arguments.
Courtesy : http://www.tutorialspoint.com/python/python_command_line_arguments.htm
Additional notes from VJ : –
If there are arguments that are provided along with the python file, then within the python file this argument can be accessed like this : –
sys.argv[1] -> for 2nd argument sys.argv[2] -> for 3rd argument Note: sys.argv[0] is the python script name as mentioned above
Regards,
VJ