Locate the writer for a format and class.
State: Stable as of 0.4.0.
- Parameters:
format_name (str) – The name of the format to lookup.
cls (type or None) – The class which the writer will expect an instance of. If cls is
None, the writer will expect a generator.
Default is None.
- Returns:
The writer associated with format_name and cls
- Return type:
function or None