Create file_handler.py

file_handler.py

@@ -0,0 +1,38 @@
+class File:
+    def __init__(self, path):
+        self.path = path
+
+    def exists(self):
+        return os.path.exists(self.path)
+
+    def save(self, data):
+        raise NotImplementedError
+
+    def load(self):
+        raise NotImplementedError
+
+class MsgpackFile(File):
+    def save(self, data):
+        with open(self.path, "wb") as file:
+            packed = msgpack.packb(data, use_bin_type=True)
+            file.write(packed)
+
+    def load(self):
+        with open(self.path, "rb") as file:
+            byte_data = file.read()
+        return msgpack.unpackb(byte_data, raw=False)
+
+class DenseArrayNumpyFile(File):
+    def save(self, data):
+        np.savez_compressed(self.path, *data)
+
+    def load(self):
+        return list(np.load(self.path).values())
+
+class SparseArrayScipyFile(File):
+    def save(self, sparse_matrices):
+        combined_sparse_matrix = vstack(sparse_matrices)
+        save_npz(self.path, combined_sparse_matrix)
+
+    def load(self):
+        return load_npz(self.path)