X-Git-Url: https://plomlompom.com/repos/day?a=blobdiff_plain;f=plomtask%2Fmisc.py;h=ab39df098059e416c7627b5fcefecae2668d7c06;hb=bdc1f2e1962b745d72c6a94f5071c24455c54b18;hp=5759c0d8b6bcc5915f84b2e94a533eefa70954e7;hpb=7adcf651f0053f0dc5d719457a016a0d5b12253b;p=plomtask

diff --git a/plomtask/misc.py b/plomtask/misc.py
index 5759c0d..ab39df0 100644
--- a/plomtask/misc.py
+++ b/plomtask/misc.py
@@ -2,8 +2,11 @@
 from datetime import datetime
 from typing import Any
 from sqlite3 import Row
+from time import sleep
 from plomtask.db import DatabaseConnection
 
+TIMESTAMP_FMT = '%Y-%m-%d %H:%M:%S.%f'
+
 
 class VersionedAttribute:
     """Attributes whose values are recorded as a timestamped history."""
@@ -28,10 +31,19 @@ class VersionedAttribute:
         return self.history[self._newest_timestamp]
 
     def set(self, value: str | float) -> None:
-        """Add to self.history if and only if not same value as newest one."""
+        """Add to self.history if and only if not same value as newest one.
+
+        Note that we wait one micro-second, as timestamp comparison to check
+        most recent elements only goes up to that precision.
+
+        Also note that we don't check against .newest because that may make us
+        compare value against .default even if not set. We want to be able to
+        explicitly set .default as the first element.
+        """
+        sleep(0.00001)
         if 0 == len(self.history) \
                 or value != self.history[self._newest_timestamp]:
-            self.history[datetime.now().strftime('%Y-%m-%d %H:%M:%S')] = value
+            self.history[datetime.now().strftime(TIMESTAMP_FMT)] = value
 
     def history_from_row(self, row: Row) -> None:
         """Extend self.history from expected table row format."""