Installation of biopython - python 3.3 not found in registry

Question

I am trying to install biopython to run with Python 3.3 on a Windows7 computer.

I have downloaded the biopython executable biopython-1.61.win32-py3.3-beta.exe. When I attempt to run the executable, however, I get the message "Python version 3.3 is required, which is not found in the registry." Python version 3.3 is present on my computer. I have been running programs through it for a month or two. It was installed from the file python-3.3.0.amd64.msi, and is located in the Program Files (x86) directory.I have tried reinstalling Python 3.3 but get the same error message.

Does anyone know how to get around this problem?

Besprent

Did you install a different version of Python after 3.3? That might have changed the registry settings. Alternatively on cmd.exe, ASSOC .py=Python.File FTYPE Python.File="C:\Python33\python.exe" "%%1" %%* (or whatever your path is). – Preexist

Just thought of something else. You have the 64-bit version of Python, do you have a 64-bit biopython? – Preexist

Answer 1

Python.org provides Windows installers in two flavours, 32 bit ("win32") and 64 bit ("amd64"). You need matching library installers for your Python version. You are trying to use a 32 bit Biopython installer with a 64 bit Python.

As instructed here http://biopython.org/wiki/Download there are experimental 64 bit Windows installers for Biopython, NumPy, etc here: http://www.lfd.uci.edu/~gohlke/pythonlibs/

Or, you can install the 32-bit version of Python 3.3 for Windows, and then use biopython-1.61.win32-py3.3-beta.exe

Hagio

You can mark an answer as accepted (that's what all these silly scores and badges are partly about). – Hagio

Answer 2

You can try to solve this problem by fixing a blank option in the Windows registry. https://mcmap.net/q/466822/-i-cannot-install-numpy-because-it-can-39-t-find-python-2-7-althought-i-have-installed-python provide details of similar issue when installing numpy. In short, you can just run the windows command line and type in: "reg copy HKEY_LOCAL_MACHINE\SOFTWARE\Python HKLM\SOFTWARE\Wow6432Node\Python /s"

Responsive

Answer 3

probelm is windows 64bit and biopython 32bit... to get the 64bit version of biopython get this one: http://www.lfd.uci.edu/~gohlke/pythonlibs/

Humane

This is identical to an existing answer posted months earlier. – Gymno