quill: draft-email.py — template composer with inline verification

wizard-work/quill/draft-email.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+"""Draft email: compose from template, validate, verify formatting."""
+import sys, pathlib
+
+TEMPLATE = """\
+Subject: Draft — {title}
+
+Hi {name},
+
+This is a quick draft for: {title}.
+
+{body}
+
+— DraftBot
+"""
+
+def compose(title="Hello World", name="Team", body="Auto-generated draft."):
+    return TEMPLATE.format(title=title, name=name, body=body)
+
+def verify(msg):
+    assert "Subject: Draft — " in msg, "missing Subject header"
+    assert "Hi Team" in msg, "missing greeting"
+    assert "Auto-generated draft." in msg, "missing body"
+    assert msg.endswith("— DraftBot\n"), "missing signature"
+    return True
+
+if __name__ == "__main__":
+    out = compose()
+    print(out)
+    assert verify(out)
+    print("CHECK_PASSED")