Add todo tracker.

[misc] / plomlib.py

diff --git a/plomlib.py b/plomlib.py
index 6a13f05f4b20b148be7b8464a60f268ad9464626..739b00f774430cb62d41eb574168eda64cb8c948 100644 (file)
--- a/plomlib.py
+++ b/plomlib.py
@@ -27,6 +27,9 @@ class PlomDB:
     def backup(self):
         import shutil
         from datetime import datetime, timedelta
+        if not os.path.exists(self.db_file):
+            return
+
         # collect modification times of numbered .bak files
         bak_prefix = f'{self.db_file}.bak.'
         backup_dates = []
@@ -98,6 +101,12 @@ class PlomHandler(BaseHTTPRequestHandler):
     def redirect(self, url='/'):
         self.send_code_and_headers(302, [('Location', url)])
 
+    def try_do(self, do_method):
+        try:
+            do_method() 
+        except PlomException as e:
+            self.fail_400(e)
+
 
 
 def run_server(port, handler_class):