ls command implemented

Author: Rashaad-Ebrahim

implement-shell-tools/ls/ls.py

@@ -1,13 +1,25 @@
 import argparse
+import os
 
 parser = argparse.ArgumentParser(
     prog="py-ls",
     description="A Python implementation of the Unix ls command",
 )
 
-parser.add_argument("-1", action="store_true", help="List one file per line")
-parser.add_argument("-a", "--all", action="store_true", help="Include directory entries whose names begin with a dot (.)")
-parser.add_argument("path", nargs="+", help="The file path to process")
+parser.add_argument("-1", dest="_1", action="store_true", help="List one file per line")
+parser.add_argument("-a", "--all", action="store_true", help="Include entries that begin with a dot (.)")
+parser.add_argument("path", nargs="?", default=".", help="Directory to list")
 
 args = parser.parse_args()
 
+files = os.listdir(args.path)
+
+if args.all:
+    files = [".", ".."] + files
+else:
+    files = [file for file in files if not file.startswith(".")]
+
+if args._1:
+    print("\n".join(files))
+else:
+    print("  ".join(files))