code: def find_fann():
      '''Find doublefann library'''
      # FANN possible libs directories (as $LD_LIBRARY_PATH), also includes
      # pkgsrc framework support.
      if sys.platform == "win32":
          dirs = sys.path
          for ver in dirs:
              if os.path.isdir(ver):
                  if find_x(ver):
                      return True
          raise Exception("Couldn't find FANN source libs!")
      else:
          dirs = ['/lib', '/usr/lib', '/usr/lib64', '/usr/local/lib', '/usr/pkg/lib']
          for path in dirs:
              if os.path.isdir(path):
                  if find_x(path):
                      return True
          raise Exception("Couldn't find FANN source libs!"f find_fann():
      '''Find doublefann library'''
      # FANN possible libs directories (as $LD_LIBRARY_PATH), also includes
      # pkgsrc framework support.
      if sys.platform == "win32":
          dirs = sys.path
          for ver in dirs:
              if os.path.isdir(ver):
                  if find_x(ver):
                      return True
          raise Exception("Couldn't find FANN source libs!")
      else:
          dirs = ['/lib', '/usr/lib', '/usr/lib64', '/usr/local/lib', '/usr/pkg/lib']
          for path in dirs:
              if os.path.isdir(path):
                  if find_x(path):
                      return True
          raise Exception("Couldn't find FANN source libs!")
docs: Find doublefann library