feat: implement ls in python with -a && -1 flags

Author: JanefrancessC

implement-shell-tools/ls/ls.py

@@ -0,0 +1,34 @@
+#!/usr/bin/env python3
+
+import argparse
+import os
+import sys
+
+parser = argparse.ArgumentParser(
+    prog='ls',
+    description='CLI tool to list contents of a directory'
+)
+
+parser.add_argument('-1', '--one', action='store_true', help='Force output to be entry per line')
+parser.add_argument('-a','--all', action='store_true', help='Include hidden files')
+parser.add_argument('path', nargs='?', default='.', help='Directories to list')
+
+args = parser.parse_args()
+
+try:
+    entries = os.listdir(args.path)
+    # print(entries)
+    if not args.all:
+        entries = [entry for entry in entries if not entry.startswith('.')]
+    entries.sort(key=str.lower)
+    # print(entries)
+    
+    if args.one:
+        for entry in entries:
+            print(entry)
+
+    else:
+        print(f" ".join(entries))
+
+except FileNotFoundError:
+    print(f"ls: No such file or directory ")