added s examples.

solid/single_responsability/file_manager.py

@@ -0,0 +1,22 @@
+# file_manager_srp.py
+import zlib
+from pathlib import Path
+
+
+class FileManager:
+    def __init__(self, filename: str | Path):
+        self.path = Path(filename)
+
+    def read(self) -> str:
+        return self.path.read_text("utf-8")
+
+    def write(self, data: str) -> None:
+        self.path.write_text(data, "utf-8")
+
+    def compress(self) -> None:
+        compressed_data = zlib.compress(self.path.read_bytes())
+        self.path.write_bytes(compressed_data)
+
+    def decompress(self) -> None:
+        decompressed_data = zlib.decompress(self.path.read_bytes())
+        self.path.write_bytes(decompressed_data)