parameters: (self, other)
return_statement: return self
docstring: Perform += with a string,
docstring_summary: Perform += with a string,
docstring_tokens: Perform + = with a string
function: def __iadd__(self, other):
          """Perform += with a string,"""
          self.append(other)
          return self
function_tokens: def __iadd__ ( self , other ) : self . append ( other ) return self