parameters: (self, line, stripspace="")
return_statement: return re.sub(
              r"^%s" % stripspace, self.indentstring * self.indent, line
          )
docstring: indent the given line according to the current indent level.
  
          stripspace is a string of space that will be truncated from the
          start of the line before indenting.
docstring_summary: indent the given line according to the current indent level.
docstring_tokens: indent the given line according to the current indent level .
function: def _indent_line(self, line, stripspace=""):
          """indent the given line according to the current indent level.
  
          stripspace is a string of space that will be truncated from the
          start of the line before indenting."""
  
          return re.sub(
              r"^%s" % stripspace, self.indentstring * self.indent, line
          )
function_tokens: def _indent_line ( self , line , stripspace = "" ) : return re . sub ( r"^%s" % stripspace , self . indentstring * self . indent , line )