Python sys Module

The sys module in Python provides a variety of functions and variables for interacting with the Python runtime environment and system-specific parameters. Here are some additional methods and functionality of the sys module along with examples:

1. Command-Line Arguments:

sys.argv: A list of command-line arguments passed to the script, where sys.argv[0] is the script's name.

import sys

if len(sys.argv) > 1:
    print("Arguments:", sys.argv[1:])
else:
    print("No command-line arguments provided.")

2. Exit the Program:

sys.exit([status]): Terminate the program with an optional exit status code.

import sys

if condition:
    sys.exit(1)  # Exit with a non-zero status code

3. Standard Input/Output Streams:

sys.stdin: Standard input stream.

sys.stdout: Standard output stream.

sys.stderr: Standard error stream.

import sys

user_input = input("Enter something: ")
sys.stdout.write(f"You entered: {user_input}\n")
sys.stderr.write("This is an error message.\n")

4. Python Version Information:

sys.version: A string containing the Python version.

sys.version_info: A named tuple containing detailed version information.

import sys

print("Python Version:", sys.version)
print("Python Version Info:", sys.version_info)

5. Path to Python Interpreter:

sys.executable: Path to the Python interpreter executable.

import sys

print("Python Interpreter Path:", sys.executable)

6. Recursion Limit:

sys.setrecursionlimit(limit): Set the maximum recursion depth.

import sys

sys.setrecursionlimit(10000)  # Increase recursion limit

7. Module Importing:

sys.modules: A dictionary containing loaded modules.

sys.path: A list of directories to search for modules.

import sys

if 'my_module' not in sys.modules:
    import my_module

8. Memory Management:

sys.getsizeof(object[, default]): Return the memory size of an object.

import sys

my_list = [1, 2, 3, 4, 5]
print("Memory size of my_list:", sys.getsizeof(my_list))

These are some additional methods and functionality provided by the sys module for interacting with the Python runtime environment and system-specific parameters. The module is particularly useful for tasks involving command-line arguments, exit codes, and Python version information.