σ šίΘ[c@`s,dZddlmZmZmZmZddlmZddlZddl Z dddd d gZ d „Z e j d dkr”dd l mZn d„Zd„ZyddlmZWn0ek rμddlmZed„ƒZnXe j ddkre j d dkrd„Zn d„ZdS(u Simple utility functions and bug fixes for compatibility with all supported versions of Python. This module should generally not be used directly, as everything in `__all__` will be imported into `astropy.utils.compat` and can be accessed from there. Includes the following fixes: * The `contextlib.suppress` context manager, which is only available in Python 3.4 or greater. i(tabsolute_importtdivisiontprint_functiontunicode_literalsi(tsixNuinvalidate_cachesuoverride__dir__usuppressupossible_filenameunamedtuple_asdictcC`sMt|tjƒrtSt|tjƒrItjdkoGtjd dk StS(u‚ Determine if the ``filename`` argument is an allowable type for a filename. In Python 3.3 use of non-unicode filenames on system calls such as `os.stat` and others that accept a filename argument was deprecated (and may be removed outright in the future). Therefore this returns `True` in all cases except for `bytes` strings in Windows on Python >= 3.3. uwin32ii(ii( t isinstanceRt text_typetTruet binary_typetsystplatformt version_infotFalse(tfilename((s8lib/python2.7/site-packages/astropy/utils/compat/misc.pytpossible_filenames i(tinvalidate_cachescC`sdS(N(tNone(((s8lib/python2.7/site-packages/astropy/utils/compat/misc.pyt5sc`sVtjd dkr4tjˆƒ‡fd†ƒ}ntjˆƒ‡fd†ƒ}|S(uΔ When overriding a __dir__ method on an object, you often want to include the "standard" members on the object as well. This decorator takes care of that automatically, and all the wrapped function needs to do is return a list of the "special" members that wouldn't be found by the normal Python means. Example ------- @override__dir__ def __dir__(self): return ['special_method1', 'special_method2'] iic`sltƒ}x*|jjƒD]}|jt|ƒƒqW|jtj|jƒƒ|jˆ|ƒƒt|ƒS(N( tsett __class__tmrotupdatetdirRtiterkeyst__dict__tsorted(tselftmemberstcls(tf(s8lib/python2.7/site-packages/astropy/utils/compat/misc.pytoverride__dir__wrapperJs  c`s2ttj|ƒƒ}|jˆ|ƒƒt|ƒS(N(Rtobjectt__dir__RR(RR(R(s8lib/python2.7/site-packages/astropy/utils/compat/misc.pyRUs(ii(R R t functoolstwraps(RR((Rs8lib/python2.7/site-packages/astropy/utils/compat/misc.pytoverride__dir__8s! (tsuppress(tcontextmanagercg`s!y dVWn|k rnXdS(u2A context manager for ignoring exceptions. Equivalent to:: try: except exceptions: pass Example:: >>> import os >>> with suppress(OSError): ... os.remove('file-that-does-not-exist') N((t exceptions((s8lib/python2.7/site-packages/astropy/utils/compat/misc.pyR$cs  ic`s‡fd†ˆjDƒS(u  The same as ``namedtuple._adict()``, but fixed to work even when namedtuple is a subclass of another namedtuple Parameters ---------- namedtuple : collections.namedtuple The named tuple to get the dict of c`s"i|]}tˆ|ƒ|“qS((tgetattr(t.0tfi(t namedtuple(s8lib/python2.7/site-packages/astropy/utils/compat/misc.pys Šs (t_fields(R*((R*s8lib/python2.7/site-packages/astropy/utils/compat/misc.pytnamedtuple_asdict€s cC`s |jƒS(uΈ The same as ``namedtuple._adict()``. Parameters ---------- namedtuple : collections.namedtuple The named tuple to get the dict of (t_asdict(R*((s8lib/python2.7/site-packages/astropy/utils/compat/misc.pyR,Œs (ii(iii(t__doc__t __future__RRRRtexternRR!R t__all__RR t importlibRR#t contextlibR$t ImportErrorR%R,(((s8lib/python2.7/site-packages/astropy/utils/compat/misc.pyt s&"       & &