如果没有可用的位置信息，这个脚本就会失败；如果成功，脚本将生成一个HTML文件，浏览器可以读取该文件来呈现一个地图。

This script can fail if no location information is available; but if it succeeds, an HTML file is generated that a browser can read to render the map.

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尝试读取文件会失败，因为文件不存在。

Attempts to read the file will fail as it does not exist.

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这个数可以匹配项目的预期数量或是少(甚至为零)由于匹配失败，读取错误，或文件结束达到。

This count can match the expected number of items or be less (even zero) due to a matching failure, a reading error, or the reach of the end-of-file.

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