python write沒法寫入文件

嘗試用python寫文件，可是沒法寫入文件，文件內容爲空。原代碼片斷以下，python poem = "This is a poem" dirs = '~/work/python/' #改成dirs = '/Users/joseph/work/python/' filename = 'poem.txt' path = dirs + filename f = open(path, 'w') f

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