initial creation

py3interm/EXAMPLES/file_access.py

@@ -0,0 +1,14 @@
+#!/usr/bin/env python
+
+import sys
+import os
+
+if len(sys.argv) < 2:
+    start_dir = "."
+else:
+    start_dir = sys.argv[1]
+
+for base_name in os.listdir(start_dir):  # <1>
+    file_name = os.path.join(start_dir, base_name)
+    if os.access(file_name, os.W_OK):  # <2>
+        print(file_name, "is writable")