diff options
Diffstat (limited to 'setuptools/wheel.py')
| -rw-r--r-- | setuptools/wheel.py | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/setuptools/wheel.py b/setuptools/wheel.py index aab7ed05..ff29e2fb 100644 --- a/setuptools/wheel.py +++ b/setuptools/wheel.py @@ -2,6 +2,7 @@ import email import itertools +import functools import os import posixpath import re @@ -27,7 +28,13 @@ WHEEL_NAME = re.compile( NAMESPACE_PACKAGE_INIT = \ "__import__('pkg_resources').declare_namespace(__name__)\n" -_supported_tags = None + +@functools.lru_cache(maxsize=None) +def _get_supported_tags(): + # We calculate the supported tags only once, otherwise calling + # this method on thousands of wheels takes seconds instead of + # milliseconds. + return set((t.interpreter, t.abi, t.platform) for t in sys_tags()) def unpack(src_dir, dst_dir): @@ -85,13 +92,7 @@ class Wheel: def is_compatible(self): '''Is the wheel compatible with the current platform?''' - global _supported_tags - if _supported_tags is None: - # We calculate the supported tags only once, otherwise calling - # this method on thousands of wheels takes seconds instead of - # milliseconds. - _supported_tags = set( - (t.interpreter, t.abi, t.platform) for t in sys_tags()) + _supported_tags = _get_supported_tags() return next((True for t in self.tags() if t in _supported_tags), False) def egg_name(self): |