A named argument passes a value by associating it with a parameter name, using the name=value form. Python treats these arguments separately from positional arguments, making calls clearer and functions more flexible. section 7.0 section 7.3
Use named arguments when a function should accept optional or extensible values:
- Define an optional parameter with a default when one named value has a natural fallback. section 7.3
- Collect arbitrary named arguments with **kwargs; Python stores the names and values in a dictionary. section 7.3
- Iterate over kwargs.items() when each supplied name-value pair must be transformed or validated. section 7.3
- Use supplied names as dynamic options, such as menu commands or query criteria like color and legs. section 9.7 section 10.36
def myxml(tagname, content='', **kwargs):
attrs = ''.join([f' {key}="{value}"'
for key, value in kwargs.items()])
return f'<{tagname}{attrs}>{content}</{tagname}>'
A compact implementation combines a required tag name, optional content, and arbitrary named attributes. section 7.3
