Install numba on your Mac

Overview

English In order to speed up the python code easily, I introduced numba. However, it was not possible to install with pip alone, so record the installation procedure as a memorandum.

Installation

It seems that llvm and ʻenum34are required separately. In particular, llvm seems to need 3.7.x instead of the latest 3.8.x. Taphomebrew / versionsto install. Also, don't forget to set the environment variableLLVM_CONFIG`.

brew tap homebrew/versions
brew install homebrew/versions/llvm37
export LLVM_CONFIG=/usr/local/Cellar/llvm37/3.7.1/bin/llvm-config-3.7

pip install enum34
pip install numba

import

So that it works even in the environment where numba is not installed If it cannot be imported, replace it with a decorator that does nothing.

try:
    from numba import jit
except ImportError:
    def jit(*args, **_kwargs):
        if len(args) > 0 and hasattr(args[0], "__call__"):
            return args[0]
        else:
            def _(func):
                return func
            return _

If you want to use something other than @ jit, define the same thing. Also, in this case, the type specification must be passed as a character string instead of an object.

Other

Is the literature around here?

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