diff --git a/sqlite3/Files/README.md b/sqlite3/Files/README.md
index d799c98..8e2df63 100644
--- a/sqlite3/Files/README.md
+++ b/sqlite3/Files/README.md
@@ -1,37 +1,40 @@
 ```python
 import sqlite3, pandas as pd
 
+
 class Files:
-    def __init__(self, db='files.sqlite'):
+
+    def __init__(self, db="files.sqlite"):
         self.conn = sqlite3.connect(db, isolation_level=None)
         self.conn.row_factory = sqlite3.Row
-        self('PRAGMA journal_mode=WAL')
-        self('CREATE TABLE IF NOT EXISTS files (filename TEXT PRIMARY KEY, content BLOB)')
+        self("PRAGMA journal_mode=WAL")
+        self("CREATE TABLE IF NOT EXISTS files (filename TEXT PRIMARY KEY, content BLOB)")
 
     def __call__(self, *args) -> pd.DataFrame:
         return pd.DataFrame(dict(row) for row in self.conn.execute(*args))
 
     def __setitem__(self, filename, content) -> None:
         assert isinstance(filename, str)
-        if isinstance(content, str): content = content.encode()
+        if isinstance(content, str):
+            content = content.encode()
         assert isinstance(content, bytes)
-        self('INSERT OR REPLACE INTO files VALUES (?,?)', (filename, content))
+        self("INSERT OR REPLACE INTO files VALUES (?,?)", (filename, content))
 
     def __getitem__(self, filename) -> bytes:
-        return self('SELECT content FROM files WHERE filename=?', (filename,)).content[0]
+        return self("SELECT content FROM files WHERE filename=?", (filename,)).content[0]
 
     def __delitem__(self, filename) -> None:
-        self('DELETE FROM files WHERE filename=?', (filename,))
+        self("DELETE FROM files WHERE filename=?", (filename,))
 
     def __iter__(self):
-        df = self('SELECT filename FROM files')
+        df = self("SELECT filename FROM files")
         return iter([] if df.empty else df.filename)
 
     def __contains__(self, filename: str) -> bool:
-        return not self('SELECT 1 FROM files WHERE filename=?', (filename,)).empty
+        return not self("SELECT 1 FROM files WHERE filename=?", (filename,)).empty
 
     def __len__(self) -> int:
-        return self('SELECT COUNT(*) FROM files').iloc[0, 0]
+        return self("SELECT COUNT(*) FROM files").iloc[0, 0]
 
 files = Files()
 for filename in files: