parameters: (self, key)
docstring: Deleting tag[key] deletes all 'key' attributes for the tag.
docstring_summary: Deleting tag[key] deletes all 'key' attributes for the tag.
docstring_tokens: Deleting tag [ key ] deletes all key attributes for the tag .
function: def __delitem__(self, key):
          "Deleting tag[key] deletes all 'key' attributes for the tag."
          self.attrs.pop(key, None)
function_tokens: def __delitem__ ( self , key ) : self . attrs . pop ( key , None )