wc.py

import sys
import os

# Flag Detection
show_lines = "-l" in sys.argv
show_words = "-w" in sys.argv
show_chars = "-c" in sys.argv

# If no flags then show all.
show_all = not (show_lines or show_words or show_chars)

# Filter files excluding flags
files = [arg for arg in sys.argv[1:] if not arg.startswith("-")]

# Total counters
total_l, total_w, total_c = 0, 0, 0

for filename in files:
    try:
        with open(filename, 'r') as f:
            lines = f.readlines()
            
            # files calculation
            l_count = len(lines)
            w_count = sum(len(line.split()) for line in lines)
            #  os.path.getsize for bytes, in .js I used const bytes = Buffer.byteLength(content);
            c_count = os.path.getsize(filename)
            
            # Update totals
            total_l += l_count
            total_w += w_count
            total_c += c_count
            
            # Printing Logic
            output = []
            if show_lines or show_all: output.append(f"{l_count:>8}")
            if show_words or show_all: output.append(f"{w_count:>8}")
            if show_chars or show_all: output.append(f"{c_count:>8}")
            
            print(f"{''.join(output)} {filename}")

    except FileNotFoundError:
        print(f"wc: {filename}: No such file or directory")
    except IsADirectoryError:
        print(f"wc: {filename}: Is a directory")
        print(f"{'0':>8} {'0':>8} {'0':>8} {filename}")

# Print Total if there were multiple files
if len(files) > 1:
    output_total = []
    if show_lines or show_all: output_total.append(f"{total_l:>8}")
    if show_words or show_all: output_total.append(f"{total_w:>8}")
    if show_chars or show_all: output_total.append(f"{total_c:>8}")
    print(f"{''.join(output_total)} total")