2020-08-13 12:00:20 +02:00
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---
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id: 5ea9997bbec2e9bc47e94db4
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2021-07-15 13:04:11 +05:30
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title: 开发一个端口扫描器
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2020-08-13 12:00:20 +02:00
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challengeType: 11
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videoId: z_qkqZS7KZ4
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2021-10-03 12:24:27 -07:00
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bilibiliIds:
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aid: 208077317
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bvid: BV1Uh411p7HS
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cid: 409036706
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2021-01-13 03:31:00 +01:00
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dashedName: developing-a-port-scanner
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2020-08-13 12:00:20 +02:00
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---
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2020-12-16 00:37:30 -07:00
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# --question--
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2020-08-13 12:00:20 +02:00
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2020-12-16 00:37:30 -07:00
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## --text--
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2020-08-13 12:00:20 +02:00
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2021-07-15 13:04:11 +05:30
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`.connect()` 和 `.connect_ex()` 方法的主要区别是什么？
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2020-08-13 12:00:20 +02:00
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2020-12-16 00:37:30 -07:00
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## --answers--
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2020-08-13 12:00:20 +02:00
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2021-07-15 13:04:11 +05:30
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这两种方法之间没有区别。
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2020-08-13 12:00:20 +02:00
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2020-12-16 00:37:30 -07:00
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---
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2021-07-15 13:04:11 +05:30
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如果有错误或没有找到主机，`.connect()` 返回一个错误代码，而 `.connect_ex()` 则引发一个异常。
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2020-12-16 00:37:30 -07:00
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---
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2021-07-15 13:04:11 +05:30
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如果有错误或没有找到主机，`.connect()` 会引发一个异常，而 `.connect_ex()` 会返回一个错误代码。
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2020-12-16 00:37:30 -07:00
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## --video-solution--
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3
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