ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）

chapter1/learning-from-experience/tests/test_rl_progress_small_episodes.py

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+"""Regression: progress prints must not ZeroDivisionError when episodes < 10."""
+
+
+def test_progress_every_never_zero():
+    for num_episodes in (1, 5, 9, 10, 100):
+        progress_every = max(1, num_episodes // 10)
+        assert progress_every >= 1
+        # modulo must be defined
+        for episode in range(num_episodes):
+            _ = (episode + 1) % progress_every
+
+
+def test_source_uses_max_guard():
+    from pathlib import Path
+    src = (Path(__file__).parent / "manual" / "rl_learning_check.py").read_text()
+    assert "progress_every = max(1, num_episodes // 10)" in src