Restructure

none/expression.py

@@ -0,0 +1,18 @@
+import random
+from typing import Union, Sequence, Callable
+
+from aiocqhttp import message
+from aiocqhttp.message import Message
+
+
+def render(expr: Union[str, Sequence[str], Callable], *, escape_args=True,
+           **kwargs) -> Message:
+    if isinstance(expr, Callable):
+        expr = expr()
+    elif isinstance(expr, Sequence):
+        expr = random.choice(expr)
+    if escape_args:
+        for k, v in kwargs.items():
+            if isinstance(v, str):
+                kwargs[k] = message.escape(v)
+    return expr.format(**kwargs)