Random String Generator

Generate a random string of specified length containing both uppercase and lowercase letters.

Technology Stack : random, string

Code Type : Function

Code Difficulty : Intermediate

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

def generate_random_string(length=10):
    if not isinstance(length, int) or length <= 0:
        raise ValueError("Length must be a positive integer.")
    letters = string.ascii_letters
    return ''.join(random.choice(letters) for i in range(length))

def get_size_format(size_bytes):
    if size_bytes == 0:
        return "0B"
    size_name = ("B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB")
    i = int(math.floor(math.log(size_bytes, 1024)))
    p = math.pow(1024, i)
    s = round(size_bytes / p, 2)
    return f"{s} {size_name[i]}"

def find_all_files(directory):
    for root, dirs, files in os.walk(directory):
        for name in files:
            yield os.path.join(root, name)

def print_system_info():
    info = {
        'platform': sys.platform,
        'python_version': sys.version,
        'os_name': os.name,
        'cpu_info': os.cpu_info(),
        'memory_info': os.mem_info()
    }
    print(json.dumps(info, indent=4))

def parse_date(date_str):
    try:
        return datetime.datetime.strptime(date_str, '%Y-%m-%d %H:%M:%S')
    except ValueError:
        return None

def remove_special_characters(text):
    return re.sub(r'[^a-zA-Z0-9\s]', '', text)