1 files changed, 8 insertions, 4 deletions
diff --git a/src/prompt_toolkit/history.py b/src/prompt_toolkit/history.py
index 553918e..2d497a0 100644
--- a/src/prompt_toolkit/history.py
+++ b/src/prompt_toolkit/history.py
@@ -7,6 +7,7 @@ NOTE: There is no `DynamicHistory`:
       loading can be done asynchronously and making the history swappable would
       probably break this.
 """
+
 from __future__ import annotations
 
 import datetime
@@ -14,7 +15,7 @@ import os
 import threading
 from abc import ABCMeta, abstractmethod
 from asyncio import get_running_loop
-from typing import AsyncGenerator, Iterable, Sequence
+from typing import AsyncGenerator, Iterable, Sequence, Union
 
 __all__ = [
     "History",
@@ -254,12 +255,15 @@ class DummyHistory(History):
         pass
 
 
+_StrOrBytesPath = Union[str, bytes, "os.PathLike[str]", "os.PathLike[bytes]"]
+
+
 class FileHistory(History):
     """
     :class:`.History` class that stores all strings in a file.
     """
 
-    def __init__(self, filename: str) -> None:
+    def __init__(self, filename: _StrOrBytesPath) -> None:
         self.filename = filename
         super().__init__()
 
@@ -297,6 +301,6 @@ class FileHistory(History):
             def write(t: str) -> None:
                 f.write(t.encode("utf-8"))
 
-            write("\n# %s\n" % datetime.datetime.now())
+            write(f"\n# {datetime.datetime.now()}\n")
             for line in string.split("\n"):
-                write("+%s\n" % line)
+                write(f"+{line}\n")