已知Python字典words = {"Chinese":"中文", "English":"英语", "French":"法语", "Korean":"韩语"}，执行del words["French"]后调用print(len(words))，输出的结果是？
words = {"Chinese":"中文", "English":"英语", "French":"法语", "Korean":"韩语"}
del words["French"]
print(len(words))
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