''' Helper to preload windows dlls to prevent dll not found errors. Once a DLL is preloaded, its namespace is made available to any subsequent DLL. This file originated in the numpy-wheels repo, and is created as part of the scripts that build the wheel. ''' import os import glob if os.name == 'nt': # convention for storing / loading the DLL from # numpy/.libs/, if present try: from ctypes import WinDLL basedir = os.path.dirname(__file__) except: pass else: libs_dir = os.path.abspath(os.path.join(basedir, '.libs')) DLL_filenames = [] if os.path.isdir(libs_dir): for filename in glob.glob(os.path.join(libs_dir, '*openblas*dll')): # NOTE: would it change behavior to load ALL # DLLs at this path vs. the name restriction? WinDLL(os.path.abspath(filename)) DLL_filenames.append(filename) if len(DLL_filenames) > 1: import warnings warnings.warn("loaded more than 1 DLL from .libs:\n%s" % "\n".join(DLL_filenames), stacklevel=1)