Apply formatting to num seconds

tenacity/before_sleep.py

@@ -32,6 +32,7 @@ def before_sleep_log(
     logger: "logging.Logger",
     log_level: int,
     exc_info: bool = False,
+    sec_format: str = "%0.3f",
 ) -> typing.Callable[["RetryCallState"], None]:
     """Before call strategy that logs to some logger the attempt."""
 
@@ -65,7 +66,7 @@ def log_it(retry_state: "RetryCallState") -> None:
         logger.log(
             log_level,
             f"Retrying {fn_name} "
-            f"in {retry_state.next_action.sleep} seconds as it {verb} {value}.",
+            f"in {sec_format % retry_state.next_action.sleep} seconds as it {verb} {value}.",
             exc_info=local_exc_info,
         )
 

tests/test_tenacity.py

@@ -1375,7 +1375,7 @@ def _before_sleep_log_raises(self, get_call_fn):
             logger.removeHandler(handler)
 
         etalon_re = (
-            r"^Retrying .* in 0\.01 seconds as it raised "
+            r"^Retrying .* in 0\.010 seconds as it raised "
             r"(IO|OS)Error: Hi there, I'm an IOError\.$"
         )
         self.assertEqual(len(handler.records), 2)
@@ -1407,7 +1407,7 @@ def test_before_sleep_log_raises_with_exc_info(self):
             logger.removeHandler(handler)
 
         etalon_re = re.compile(
-            r"^Retrying .* in 0\.01 seconds as it raised "
+            r"^Retrying .* in 0\.010 seconds as it raised "
             r"(IO|OS)Error: Hi there, I'm an IOError\.{0}"
             r"Traceback \(most recent call last\):{0}"
             r".*$".format("\n"),
@@ -1440,7 +1440,7 @@ def test_before_sleep_log_returns(self, exc_info=False):
         finally:
             logger.removeHandler(handler)
 
-        etalon_re = r"^Retrying .* in 0\.01 seconds as it returned None\.$"
+        etalon_re = r"^Retrying .* in 0\.010 seconds as it returned None\.$"
         self.assertEqual(len(handler.records), 2)
         fmt = logging.Formatter().format
         self.assertRegex(fmt(handler.records[0]), etalon_re)