From 74943b4c741e885914bdf1d59c62401fe24ec8eb Mon Sep 17 00:00:00 2001
From: Mark Paronyan <markparonian@gmail.com>
Date: Wed, 30 Sep 2026 20:45:47 +0300
Subject: [PATCH] refactor: convert remaining percent formatting in log
 messages

---
 gns3server/logger.py                     | 4 ++--
 gns3server/main.py                       | 4 ++--
 gns3server/utils/__init__.py             | 2 +-
 gns3server/utils/asyncio/aiozipstream.py | 2 +-
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/gns3server/logger.py b/gns3server/logger.py
index e2f184bca..30d99bf39 100644
--- a/gns3server/logger.py
+++ b/gns3server/logger.py
@@ -125,8 +125,8 @@ class CompressedRotatingFileHandler(RotatingFileHandler):
             self.stream.close()
         if self.backupCount > 0:
             for i in range(self.backupCount - 1, 0, -1):
-                sfn = "%s.%d.gz" % (self.baseFilename, i)
-                dfn = "%s.%d.gz" % (self.baseFilename, i + 1)
+                sfn = f"{self.baseFilename}.{i}.gz"
+                dfn = f"{self.baseFilename}.{i + 1}.gz"
                 if os.path.exists(sfn):
                     if os.path.exists(dfn):
                         os.remove(dfn)
diff --git a/gns3server/main.py b/gns3server/main.py
index 150987d41..29a2073cf 100644
--- a/gns3server/main.py
+++ b/gns3server/main.py
@@ -45,7 +45,7 @@ def daemonize():
             # Exit first parent
             sys.exit(0)
     except OSError as e:
-        print("First fork failed: %d (%s)\n" % (e.errno, e.strerror), file=sys.stderr)
+        print(f"First fork failed: {e.errno} ({e.strerror})\n", file=sys.stderr)
         sys.exit(1)
 
     # Decouple from parent environment
@@ -59,7 +59,7 @@ def daemonize():
             # Exit from second parent
             sys.exit(0)
     except OSError as e:
-        print("Second fork failed: %d (%s)\n" % (e.errno, e.strerror), file=sys.stderr)
+        print(f"Second fork failed: {e.errno} ({e.strerror})\n", file=sys.stderr)
         sys.exit(1)
 
 
diff --git a/gns3server/utils/__init__.py b/gns3server/utils/__init__.py
index 2b57ec8ae..386095757 100644
--- a/gns3server/utils/__init__.py
+++ b/gns3server/utils/__init__.py
@@ -72,7 +72,7 @@ def parse_version(version):
             info = int(info)
             # We pad with zero to compare only on string
             # This avoid issue when comparing version with different length
-            version.append("%06d" % (info,))
+            version.append(f"{info:06d}")
         except ValueError:
             # Force to a version with three number
             if len(version) == 1:
diff --git a/gns3server/utils/asyncio/aiozipstream.py b/gns3server/utils/asyncio/aiozipstream.py
index 2ea16f83a..b9a9d42c9 100644
--- a/gns3server/utils/asyncio/aiozipstream.py
+++ b/gns3server/utils/asyncio/aiozipstream.py
@@ -187,7 +187,7 @@ class ZipFile(zipfile.ZipFile):
         # check for valid comment length
         if len(comment) >= zipfile.ZIP_MAX_COMMENT:
             if self.debug:
-                print("Archive comment is too long; truncating to %d bytes" % zipfile.ZIP_MAX_COMMENT)
+                print(f"Archive comment is too long; truncating to {zipfile.ZIP_MAX_COMMENT} bytes")
             comment = comment[: zipfile.ZIP_MAX_COMMENT]
         self._comment = comment
         self._didModify = True