Decorator to ensure clean opening and closing of files.
path_arg (int) – Location of the path argument in args. Even if the argument is a named positional argument (with a default value), you must specify its index as a positional argument.
mode (str) – String for opening mode.
_open_file – Function which cleanly executes the io.
- Return type
Decorate functions like this:
@open_file(0,'r') def read_function(pathname): pass @open_file(1,'w') def write_function(G,pathname): pass @open_file(1,'w') def write_function(G, pathname='graph.dot') pass @open_file('path', 'w+') def another_function(arg, **kwargs): path = kwargs['path'] pass