完美，同志，完美！！！！！！！

resources/test/genexpr_vs_yieldfrom.py

@@ -0,0 +1,21 @@
+
+# 模拟两种写法
+def method_A(self, start, end):
+    yield from (f"{track}.get_range(start, end)" for track in self)
+
+def method_B(self, start, end):
+    return (f"{track}.get_range(start, end)" for track in self)
+
+
+
+tracks = ["A", "B"]
+
+gen_a = method_A(tracks, 0, 10)
+print(list(gen_a))
+
+
+
+gen_b = method_B(tracks, 0, 10)
+print(list(gen_b))
+
+# they are the same output