Can't install h5py

Question

I am trying to h5py on Windows10 64bit, Python 3.8.5, Pip 20.2.4.

Used this command

pip install h5py

But this throws an error

ERROR: Could not build wheels for h5py which use PEP 517 and cannot be installed directly

Looks like it's quite known issue for pep 517 and other packages, so i try to check all of the solutions like

pip install --no-use-pep517 h5py
pip install --no-binary h5py

But nothing works. How can I install h5py?

Solution 1

Found a solution - I was trying to install on Python3.8.5 32bit. Switching to 64bit just solved the issue.

I saw that the latest version doesn't support win 32, check this: github.com/h5py/h5py/issues/1753

Solution 2

Installing versioned-hdf5 will solve this issue.

pip install versioned-hdf5

Now do pip install h5py

Solution 3

I'm not sure if you're getting any other kind of dependencies errors besides this. In my case, I had additional details about the missing dependency libhdf5.so. It stated: "error: libhdf5.so cannot open shared object file: No such file or directory".

I checked the h5py documentation to make sure I had the right versions of pip and setuptools, https://pip.pypa.io/en/stable/reference/pip/.

pip install --upgrade pip setuptools wheel

I installed the libhdf5.so library by running below code and that solved it for me:

sudo apt-get install libhdf5-dev

I've come across similar PEP 517 errors caused by missing dependencies:

1. ERROR: Could not build wheels for glpk which use PEP 517 and cannot be installed directly
2. ERROR: Could not build wheels for scipy which use PEP 517 and cannot be installed directly

Comments

[christian]

I had no problem with using 64bit, so just switched to it. I saw that latest version doesn't support win 32, check this : github.com/h5py/h5py/issues/1753 @AlirezaEsrari

[wovano]

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