implement ls-1 command

Author: zohrehKazemianpour

implement-shell-tools/ls/ls.py

@@ -0,0 +1,20 @@
+import os
+import argparse
+
+# Setup argument parser
+parser = argparse.ArgumentParser(
+    prog="ls",
+    description="Lists contents of a directory"
+)
+
+parser.add_argument("-1", dest="one_column", action="store_true", help="List one file per line")
+parser.add_argument("path", nargs='?', default=".", help="Directory to list (default: current directory)")
+
+args = parser.parse_args()
+
+# List directory contents
+files = os.listdir(args.path)
+
+# Print each file
+for file in files:
+    print(file)