B ZW@sPdZddlmZddlmZGdddeZer:ddZnddZd d d Zd S)z$ Handle file opening for read/write )_is_string_like)PY3c@s0eZdZdZddZddZddZdd Zd S) EmptyContextManagerzw This class is needed to allow file-like object to be used as context manager, but without getting closed. cCs ||_dS)N)_obj)selfobjr9lib/python3.7/site-packages/statsmodels/iolib/openfile.py__init__ szEmptyContextManager.__init__cCs|jS)z)When entering, return the embedded object)r)rrrr __enter__szEmptyContextManager.__enter__cGsdS)zDon't hide anythingFr)rargsrrr __exit__szEmptyContextManager.__exit__cCs t|j|S)N)getattrr)rnamerrr __getattr__szEmptyContextManager.__getattr__N)__name__ __module__ __qualname____doc__r r r rrrrr rs rcCs4|dr"ddl}|j|||dSt|||dSdS)Nz.gzr)encoding)endswithgzipopen)fnamemoderrrrr _opens rcCs,|drddl}|||St||SdS)Nz.gzr)rrr)rrrrrrr r"s  rNcCsbt|rt|||Sy(d|kr$|jd|ks4d|kr:|jWntk rXtdYnXt|S)a7 Light wrapper to handle strings and let files (anything else) pass through. It also handle '.gz' files. Parameters ========== fname: string or file-like object File to open / forward mode: string Argument passed to the 'open' or 'gzip.open' function encoding: string For Python 3 only, specify the encoding of the file Returns ======= A file-like object that is always a context-manager. If the `fname` was already a file-like object, the returned context manager *will not close the file*. rwaz,fname must be a string or a file-like object)rrreadwriteAttributeError ValueErrorr)rrrrrr get_file_obj)s  r#)rN) rZnumpy.lib._iotoolsrZstatsmodels.compat.pythonrobjectrrr#rrrr s