Python从文件中读取指定的行

若是想根据给出的行号， 从文本文件中读取一行数据，  Python标准库linecache模块很是适合这个任务:python 测试文件内容 ：测试 This is line 1. This is line 2. This is line 3. This is line 4. This is line 5. This is line 6. This is line 7. This is line 8

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