diff --git a/bemani/backend/bishi/bishi.py b/bemani/backend/bishi/bishi.py
index 04e3457..3955927 100644
--- a/bemani/backend/bishi/bishi.py
+++ b/bemani/backend/bishi/bishi.py
@@ -162,7 +162,7 @@ class TheStarBishiBashi(
 
                 # Reconstruct table
                 unlock_bits = unlock_bits[::-1]
-                csvs[11] = ''.join(['{:02x}'.format(x) for x in unlock_bits]).encode('ascii')
+                csvs[11] = ''.join([f'{x:02x}' for x in unlock_bits]).encode('ascii')
 
             # This is a valid profile node for this type, lets return only the profile values
             strdata = b','.join(csvs[2:])
diff --git a/bemani/backend/popn/eclale.py b/bemani/backend/popn/eclale.py
index 9f2c53a..ec59cb5 100644
--- a/bemani/backend/popn/eclale.py
+++ b/bemani/backend/popn/eclale.py
@@ -399,7 +399,7 @@ class PopnMusicEclale(PopnMusicBase):
     def format_extid(self, extid: int) -> str:
         data = str(extid)
         crc = abs(binascii.crc32(data.encode('ascii'))) % 10000
-        return '{}{:04d}'.format(data, crc)
+        return f'{data}{crc:04d}'
 
     def format_profile(self, userid: UserID, profile: ValidatedDict) -> Node:
         root = Node.void('player23')
diff --git a/bemani/backend/popn/usaneko.py b/bemani/backend/popn/usaneko.py
index 2f31feb..d52830d 100644
--- a/bemani/backend/popn/usaneko.py
+++ b/bemani/backend/popn/usaneko.py
@@ -681,7 +681,7 @@ class PopnMusicUsaNeko(PopnMusicBase):
     def format_extid(self, extid: int) -> str:
         data = str(extid)
         crc = abs(binascii.crc32(data.encode('ascii'))) % 10000
-        return '{}{:04d}'.format(data, crc)
+        return f'{data}{crc:04d}'
 
     def format_profile(self, userid: UserID, profile: ValidatedDict) -> Node:
         root = Node.void('player24')
diff --git a/bemani/utils/psmap.py b/bemani/utils/psmap.py
index dec7e09..9b27719 100644
--- a/bemani/utils/psmap.py
+++ b/bemani/utils/psmap.py
@@ -19,7 +19,7 @@ def parse_psmap(data: bytes, offset: str, rootname: str) -> Node:
 
             if offset >= start and offset < end:
                 return (offset - start) + section.PointerToRawData
-        raise Exception('Couldn\'t find raw offset for virtual offset 0x{:08x}'.format(offset))
+        raise Exception(f'Couldn\'t find raw offset for virtual offset 0x{offset:08x}')
 
     if base >= pe.OPTIONAL_HEADER.ImageBase:
         # Assume this is virtual
@@ -68,7 +68,7 @@ def parse_psmap(data: bytes, offset: str, rootname: str) -> Node:
             pass
 
         if nodetype == 0x00:
-            raise Exception('Invalid node type 0x{:02x}'.format(nodetype))
+            raise Exception(f'Invalid node type 0x{nodetype:02x}')
         elif nodetype == 0x01:
             # This is a void node, so we should handle by recursing
             node = Node.void(name)
@@ -171,7 +171,7 @@ def parse_psmap(data: bytes, offset: str, rootname: str) -> Node:
             else:
                 node = Node.bool(name, False)
         else:
-            raise Exception('Unimplemented node type 0x{:02x}'.format(nodetype))
+            raise Exception(f'Unimplemented node type 0x{nodetype:02x}')
 
         # Append it
         root.add_child(node)
diff --git a/bemani/utils/read.py b/bemani/utils/read.py
index 0d014a6..1161935 100644
--- a/bemani/utils/read.py
+++ b/bemani/utils/read.py
@@ -404,7 +404,7 @@ class ImportPopn(ImportBase):
 
                 if offset >= start and offset < end:
                     return (offset - start) + section.PointerToRawData
-            raise Exception('Couldn\'t find raw offset for virtual offset 0x{:08x}'.format(offset))
+            raise Exception(f'Couldn\'t find raw offset for virtual offset 0x{offset:08x}')
 
         if self.version == VersionConstants.POPN_MUSIC_TUNE_STREET:
             # Based on K39:J:A:A:2010122200
@@ -2445,7 +2445,7 @@ class ImportSDVX(ImportBase):
 
                 if offset >= start and offset < end:
                     return (offset - start) + section.PointerToRawData
-            raise Exception('Couldn\'t find raw offset for virtual offset 0x{:08x}'.format(offset))
+            raise Exception(f'Couldn\'t find raw offset for virtual offset 0x{offset:08x}')
 
         if self.version == VersionConstants.SDVX_BOOTH:
             offset = 0xFFF28
diff --git a/bemani/utils/struct.py b/bemani/utils/struct.py
index 1a3d372..af5de13 100644
--- a/bemani/utils/struct.py
+++ b/bemani/utils/struct.py
@@ -15,7 +15,7 @@ def parse_struct(data: bytes, startaddr: str, endaddr: str, fmt: str) -> None:
 
             if offset >= start and offset < end:
                 return (offset - start) + section.PointerToRawData
-        raise Exception('Couldn\'t find raw offset for virtual offset 0x{:08x}'.format(offset))
+        raise Exception(f'Couldn\'t find raw offset for virtual offset 0x{offset:08x}')
 
     if start >= pe.OPTIONAL_HEADER.ImageBase:
         # Assume this is virtual