fix: include day count in long training log durations (#210)

---------

Co-authored-by: ClemensSchwarke <clemens.schwarke@gmail.com>

Author: masahiro-kubota

CONTRIBUTORS.md

@@ -36,6 +36,7 @@ Please keep the lists sorted alphabetically.
 * Lorenzo Terenzi
 * Marko Bjelonic
 * Markus Portugall
+* Masahiro Kubota
 * Matthijs van der Boon
 * Özhan Özen
 * Pascal Roth

rsl_rl/utils/logger.py

@@ -6,11 +6,11 @@
 
 from __future__ import annotations
 
+import datetime
 import git
 import os
 import pathlib
 import statistics
-import time
 import torch
 import warnings
 from collections import deque
@@ -274,8 +274,8 @@ def log(
             log_string += (
                 f"""{"-" * width}\n"""
                 f"""{"Iteration time:":>{pad}} {iteration_time:.2f}s\n"""
-                f"""{"Time elapsed:":>{pad}} {time.strftime("%H:%M:%S", time.gmtime(self.tot_time))}\n"""
-                f"""{"ETA:":>{pad}} {time.strftime("%H:%M:%S", time.gmtime(eta))}\n"""
+                f"""{"Time elapsed:":>{pad}} {datetime.timedelta(seconds=int(self.tot_time))}\n"""
+                f"""{"ETA:":>{pad}} {datetime.timedelta(seconds=int(eta))}\n"""
             )
             print(log_string)