feat: implement Python version of myls command

Author: RahwaZeslusHaile

implement-shell-tools/ls/sample-files/myls.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+import argparse
+import os
+
+def list_directory(dir_path, show_all):
+    if not os.path.exists(dir_path):
+        print(f"ls: cannot access '{dir_path}': No such file or directory")
+        return
+
+    if os.path.isfile(dir_path):
+        print(dir_path)
+        return
+
+    try:
+        entries = os.listdir(dir_path)
+    except PermissionError:
+        print(f"ls: cannot access '{dir_path}': Permission denied")
+        return
+
+    if not show_all:
+        entries = [e for e in entries if not e.startswith(".")]
+    else:
+        entries = [".", ".."] + entries
+
+    entries.sort()
+    for e in entries:
+        print(e)
+
+def main():
+    parser = argparse.ArgumentParser(description="Custom implementation of ls")
+    parser.add_argument("-1", action="store_true", help="list one file per line (default)")
+    parser.add_argument("-a", "--all", action="store_true", help="include hidden files")
+    parser.add_argument("dir", nargs="?", default=".", help="directory to list")
+
+    args = parser.parse_args()
+
+    list_directory(args.dir, args.all)
+
+if __name__ == "__main__":
+    main()