You are using pip version 10.0.1, however version 18.1 is available.問題解決

在GitHub中下載了Python源碼，直接運行pip install -Ur requirements.txt，系統如下提示： You are using pip version 10.0.1, however version 18.1 is available. You should consider upgrading via the ‘python -m pip install --upg

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