安裝selenium

5、驗證是否安裝pip,在cmd中輸入pip，出現下圖表示安裝pip成功 6、安裝selenium，在cmd中輸入pip install -U selenium 出現報錯「You are using pip version 19.0.3, however version 20.0.2 is available. You should consider upgrading via the 'pyth

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