Complete ls.py implementation.

Author: Fithi-Teklom

implement-shell-tools/ls/ls.py

@@ -0,0 +1,42 @@
+import sys
+import os
+
+show_all = "-a" in sys.argv
+one_per_line = "-1" in sys.argv
+
+paths = []
+
+for argument in sys.argv[1:]:
+    if not argument.startswith("-"):
+        paths.append(argument)
+
+if not paths:
+    paths.append(".")
+
+for path in paths:
+    if os.path.isfile(path):
+        if len(paths) == 1 or one_per_line:
+            print(path)
+        else:
+            print(path, end = ("  "))
+    else:
+        if len(paths) > 1:
+            print()
+            print()
+            print(path + ":")
+
+        files = sorted(os.listdir(path))
+
+        if show_all:
+            files = ["."] + [".."] + files
+
+        for file in files:
+            if show_all or not file.startswith("."):
+                if one_per_line:
+                    print(file)
+                else:
+                    print(file, end=("  ")) 
+        if not one_per_line:
+            print()
+
+