Implemented data models for post

postly/common/models.py

@@ -0,0 +1,24 @@
+from dataclasses import dataclass
+from pydantic import BaseModel
+from typing import List
+
+
+class StrictPost(BaseModel):
+    content: str
+    timestamp: int
+    topics: List[str]
+
+
+@dataclass
+class Post:
+    content: str
+    timestamp: int
+    topics: List[str]
+
+
+if __name__ == "__main__":
+    # this should be OK, as not strictly typed
+    Post(content=1, timestamp=1, topics=["1"])
+
+    # this should result in a validation error, as pydantic enforces strict typing on runtime
+    StrictPost(content=1, timestamp=1, topics=["1"])