update

engine/tests/fixtures/demo_sort.py

@@ -0,0 +1,27 @@
+"""Demo script for users: contains several detectable anti-patterns.
+
+- membership test against a list inside a loop  -> membership_in_list
+- nested loops                                  -> nested_loops
+- string concatenation with += inside a loop    -> str_concat_loop
+"""
+
+
+def build_report(rows, allow):
+    out = ""
+    for r in rows:
+        if r in allow:            # O(n) membership test on a list
+            out += str(r) + ","   # string += accumulation
+        for other in rows:        # nested loop -> O(n^2)
+            if r == other:
+                pass
+    return out
+
+
+def main():
+    rows = list(range(400))
+    allow = list(range(0, 400, 2))
+    for _ in range(30):
+        build_report(rows, allow)
+
+
+main()

engine/tests/fixtures/nested_calls.py

@@ -0,0 +1,16 @@
+def leaf():
+    s = 0
+    for i in range(20000):
+        s += i
+    return s
+
+
+def mid():
+    return sum(leaf() for _ in range(3))
+
+
+def main():
+    return mid()
+
+
+main()

engine/tests/fixtures/with_imports.py

@@ -0,0 +1,19 @@
+"""scope=all 的测试 fixture —— 故意 import 一些标准库并实际用它们，
+让 cProfile 能归因到非用户脚本里的帧。"""
+import json
+import time
+
+
+def payload():
+    # 强制 json.loads / json.dumps 进 cProfile 栈
+    return json.loads(json.dumps({"a": 1, "b": [1, 2, 3]}))
+
+
+def run():
+    for _ in range(50):
+        payload()
+    # 让 time.sleep / 调度器也进栈 —— 注意 sleep < cProfile tick 的话归不到
+    # 它自己头上，但 time 模块的辅助函数会被经过
+
+
+run()