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“break" ouside the loop

break 不能用來中止 if statement，而是中止 Loop

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unindent does not match any outer indentation level

新的 python 語法中，代碼縮進 (indentation) 不支援 Tab 和 Space 混用

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name ‘raw_input’ is not defined

python 3 只需要 ‘input‘ 即可，沒有 ‘raw_input’

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