changed ptycho/ to class/methods.

TODO: also change bo/, fix main.py

ptycho/ptycho_base.py

@@ -0,0 +1,34 @@
+from abc import ABC, abstractmethod
+from typing import Any
+
+
+class PtychoEngine(ABC):
+    name = None
+
+    def __init__(self, config):
+        self.config = config
+        self._output = None
+        self._recon_object = None
+        self._recon_probe = None
+        self._metric = None
+
+
+    @abstractmethod
+    def run(self) -> None:
+        pass
+
+    @abstractmethod
+    def output(self) -> Any:
+        pass
+
+    @abstractmethod
+    def recon_object(self) -> Any:
+        pass
+
+    @abstractmethod
+    def recon_probe(self) -> Any:
+        pass
+
+    @abstractmethod
+    def metric(self) -> float:
+        pass