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本文地址：http://blog.csdn.net/caroline_wendy/article/details/77089599
TensorFlow是常用的機器學習庫之一。
使用阿里雲的源安裝TensorFlow時
pip install --upgrade tensorflow -i http://mirrors.aliyun.com/pypi/simple提示錯誤：
Downloading/unpacking tensorflow
http://mirrors.aliyun.com/pypi/simple/tensorflow/ uses an insecure transport scheme (http). Consider using https if mirrors.aliyun.com has it available
Could not find any downloads that satisfy the requirement tensorflow
Cleaning up...
No distributions at all found for tensorflow
Storing debug log for failure in /home/classify/.pip/pip.log原因，pip版本較低，更新pip版本，即可。
pip install --upgrade pip再次安裝 tensorflow，提示
Collecting tensorflow
The repository located at mirrors.aliyun.com is not a trusted or secure host and is being ignored. If this repository is available via HTTPS it is recommended to use HTTPS instead, otherwise you may silence this warning and allow it anyways with '--trusted-host mirrors.aliyun.com'.
Could not find a version that satisfies the requirement tensorflow (from versions: )
No matching distribution found for tensorflow信任源，再次安裝，即可
pip install --upgrade tensorflow -i http://mirrors.aliyun.com/pypi/simple --trusted-host mirrors.aliyun.com