Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: kujirahand

TkEasyGUI/dialogs.py

@@ -727,6 +727,8 @@ def popup_get_file(
     - `file_types` is a list of tuples (description, file extension) or a list of file extensions. For example: [("Text Files", "*.txt"), ("All Files", "*.*")] or ["*.txt", "*.py"].
 
     ```py
+    import TkEasyGUI as eg
+
     # select a file to open
     file_path = eg.popup_get_file("Select a file to open:", "Open File")
     print(file_path)