refactor: replace percent formatting with format specifiers

gns3server/compute/docker/docker_vm.py

@@ -277,7 +277,7 @@ class DockerVM(BaseNode):
 
         if not mac_address:
             # use the node UUID to generate a random MAC address
-            self._mac_address = "02:42:%s:%s:%s:00" % (self.id[2:4], self.id[4:6], self.id[6:8])
+            self._mac_address = "02:42:{}:{}:{}:00".format(self.id[2:4], self.id[4:6], self.id[6:8])
         else:
             self._mac_address = mac_address
 

gns3server/compute/qemu/utils/ziputils.py

@@ -52,4 +52,4 @@ def unpack_zip(filename, extract_dir=None):
         for fname, date_time in reversed(dirs):
             os.utime(fname, (date_time, date_time))
     except zipfile.BadZipFile:
-        raise shutil.ReadError("%s is not a zip file" % filename)
+        raise shutil.ReadError("{} is not a zip file".format(filename))

gns3server/db/models/base.py

@@ -59,10 +59,10 @@ class GUID(TypeDecorator):
             return str(value)
         else:
             if not isinstance(value, uuid.UUID):
-                return "%.32x" % uuid.UUID(value).int
+                return "{:032x}".format(uuid.UUID(value).int)
             else:
                 # hexstring
-                return "%.32x" % value.int
+                return "{:032x}".format(value.int)
 
     def process_result_value(self, value, dialect):
         if value is None:

gns3server/utils/__init__.py

@@ -50,7 +50,7 @@ def int_to_macaddress(integer):
     """
     Convert an integer to a mac address
     """
-    return ":".join(textwrap.wrap("%012x" % (integer), width=2))
+    return ":".join(textwrap.wrap("{:012x}".format(integer), width=2))
 
 
 def parse_version(version):

gns3server/utils/asyncio/aiozipstream.py

@@ -183,7 +183,7 @@ class ZipFile(zipfile.ZipFile):
         """
 
         if not isinstance(comment, bytes):
-            raise TypeError("comment: expected bytes, got %s" % type(comment))
+            raise TypeError("comment: expected bytes, got {}".format(type(comment)))
         # check for valid comment length
         if len(comment) >= zipfile.ZIP_MAX_COMMENT:
             if self.debug: