Recuperare parametri da command line (command line arguments)

Updated at: 22/11/2013

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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.