ch2_python_intro.md 中逻辑运算符示例有错


print("a and b =",a and b)
print("a or b =",a and b)
print("not b =",not a)
图上第二个和第三个都写错了，下面对应的结果也不对

Open ch2_python_intro.md and inspect the logical-operator example shown in the issue. Correct the second and third expressions and their displayed results according to Python's operator behavior, then review the rendered Markdown to confirm the example is consistent.

Written by the indexing model from the issue text.