Merge pull request #7953 from SomberNight/202208_logging_stderr_timestamps

logging: add a relative timestamp to stderr console logs

electrum/logging.py

@@ -36,17 +36,21 @@ file_formatter = LogFormatterForFiles(fmt="%(asctime)22s | %(levelname)8s | %(na
 
 class LogFormatterForConsole(logging.Formatter):
 
+    def formatTime(self, record, datefmt=None):
+        t = record.relativeCreated / 1000
+        return f"{t:6.2f}"
+
     def format(self, record):
+        record = copy.copy(record)  # avoid mutating arg
         record = _shorten_name_of_logrecord(record)
+        if shortcut := getattr(record, 'custom_shortcut', None):
+            record.name = f"{shortcut}/{record.name}"
         text = super().format(record)
-        shortcut = getattr(record, 'custom_shortcut', None)
-        if shortcut:
-            text = text[:1] + f"/{shortcut}" + text[1:]
         return text
 
 
 # try to make console log lines short... no timestamp, short levelname, no "electrum."
-console_formatter = LogFormatterForConsole(fmt="%(levelname).1s | %(name)s | %(message)s")
+console_formatter = LogFormatterForConsole(fmt="%(asctime)s | %(levelname).1s | %(name)s | %(message)s")
 
 
 def _shorten_name_of_logrecord(record: logging.LogRecord) -> logging.LogRecord: