#NEWLINE# @ contextmanager #NEWLINE# def _open( path ) : #NEWLINE# #INDENT# 'Mock of the built-in `open()` function. If `path` is `-` then\n    `sys.stdin` is returned.\n    ' #NEWLINE# if ( path == '-' ) : #NEWLINE# #INDENT# ( yield sys . stdin ) #NEWLINE# #UNINDENT# else : #NEWLINE# #INDENT# with open ( path ) as f : #NEWLINE# #INDENT# ( yield f )