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Solution to error when installing tensorflow in Anaconda: Could not find a version that satisfies the requirement tensorflow

need​

When learning about tensorflow in jupyter notebook, it prompts No module named 'tensorflow', so the tensorflow package needs to be installed.

Report an error​

But when installing, it always prompts: ERROR: Could not find a version that satisfies the requirement tensorflow is shown in the figure below. No matter what version is specified or which mirror source is used, it will not work.

1.png

process​

The following investigations were conducted:

1.Python version, my Python version is 3.7, tensorflow requires 3.6 - 3.9, so it is consistent. (Python environment view: Enter python directly, you can see how many digits are 32bit or 64bit)​

2.pip version, my pip version is 23, which is high enough.​

2.png

final solution​

How to convert 32-bit python in anaconda to 64-bit python? Refer to this article: Coexistence of 64-bit python and 32-bit python under anaconda3

The steps are roughly:

1.Download the 64-bit python package from the python official website and install it​

2.Add environment variables​

3.Create an environment with the same name in anaconda, such as "Python36"​

4.Replace the installed package into anaconda's environment package (the environment location can be viewed using the conda env list command)​

Use the python command to see that it has become 64bit.

3.png

After this, follow the prompts to upgrade pip

python -m pip install --upgrade pip -i https://pypi.douban.com/simple

4.png

Continue to install tensorflow and the installation will be successful.

pip3 install tensorflow==2.0.0 -i https://pypi.tuna.tsinghua.edu.cn/simple