Python Functions Showcase from A to Z

The following functions demonstrate the application of functions selected from Python's built-in libraries from A to Z, including generating random strings, reading file content, filtering numbers from strings, writing JSON data, printing directory contents, and getting system information.

Technology Stack : string, os, random, re, json, sys

Code Type : Function

Code Difficulty : Intermediate

                
                    
import datetime
import json
import os
import random
import re
import string
import sys

def generate_random_string(length=10):
    letters = string.ascii_lowercase
    return ''.join(random.choice(letters) for i in range(length))

def read_file_content(file_path):
    with open(file_path, 'r') as file:
        return file.read()

def filter_numbers_from_string(input_string):
    return re.findall(r'\d+', input_string)

def write_json_data(data, file_path):
    with open(file_path, 'w') as file:
        json.dump(data, file, indent=4)

def print_directory_contents(path='.'):
    for root, dirs, files in os.walk(path):
        level = root[len(path):].count(os.sep)
        indent = ' ' * 4 * level
        print(f"{indent}{os.path.basename(root)}/")
        subindent = ' ' * 4 * (level + 1)
        for f in files:
            print(f"{subindent}{f}")

def get_system_info():
    info = {
        'system': os.name,
        'platform': sys.platform,
        'python_version': sys.version,
        'machine': sys_machine
    }
    return info