摘自tensorflow网站 https://www.tensorflow.org/install/install_windows

Installing with native pip If the following version of Python is not installed on your machine, install it now: Python 3.5.x from python.org TensorFlow only supports version 3.5.x of Python on Windows. Note that Python 3.5.x comes with the pip3 package manager, which is the program you'll use to install TensorFlow. To install TensorFlow, start a terminal. Then issue the appropriate pip3 install command in that terminal. To install the CPU-only version of TensorFlow, enter the following command:

C:\> pip3 install --upgrade tensorflow
To install the GPU version of TensorFlow, enter the following command:

C:\> pip3 install --upgrade tensorflow-gpu

从今天开始，如果还有人想知道， Python >= 3.9也会导致同样的问题 卸载python 3.9，然后安装3.8，应该会解决这个问题

如果你最近遇到了这个问题(比如，在2018年Python 3.7发布之后)，这很可能是由于tensorflow方面缺乏Python 3.7支持造成的。如果您不介意，可以尝试使用Python 3.6。你可以从https://github.com/tensorflow/tensorflow/issues/20444上找到一些技巧，但使用它们的风险由你自己承担。我使用了harpone建议的方法——首先下载Python 3.6的tensorflow wheel，然后手动重命名它……

cp tensorflow-1.11.0-cp36-cp36m-linux_x86_64.whl tensorflow-1.11.0-cp37-cp37m-linux_x86_64.whl
pip install tensorflow-1.11.0-cp37-cp37m-linux_x86_64.whl

好消息是，已经有了3.7支持的pull请求。希望能尽快发布。

摘自tensorflow网站 https://www.tensorflow.org/install/install_windows

Installing with native pip If the following version of Python is not installed on your machine, install it now: Python 3.5.x from python.org TensorFlow only supports version 3.5.x of Python on Windows. Note that Python 3.5.x comes with the pip3 package manager, which is the program you'll use to install TensorFlow. To install TensorFlow, start a terminal. Then issue the appropriate pip3 install command in that terminal. To install the CPU-only version of TensorFlow, enter the following command:

C:\> pip3 install --upgrade tensorflow
To install the GPU version of TensorFlow, enter the following command:

C:\> pip3 install --upgrade tensorflow-gpu

如果你试图在windows机器上安装它，你需要有64位版本的python 3.5。这是真正安装它的唯一方法。来自网站:

TensorFlow仅支持Windows上的64位Python 3.5。我们已经用以下Python发行版测试了pip包: Anaconda的Python 3.5 Python 3.5来自python.org。

你可以从这里下载合适的python版本(确保你选择了一个写着“Windows x86-64”的版本)

现在，您应该能够使用pip install tensorflow或python -m pip install tensorflow进行安装(如果同时安装了python2和python3，请确保您使用的是从python3安装的正确pip)

请记住安装Anaconda 3-5.2.0作为最新版本，即3-5.3.0，包含Tensorflow不支持的python 3.7版本。

你可以试试这个

pip install --upgrade tensorflow