(self, printer=None)
return outstr
Printing method.
Printing method.
Printing method .
def __str__(self, printer=None):
        """Printing method. """
        ar = self.args  # just to shorten things
        if len(ar) == 0:
            return str(0)
        ol = []  # output list, to be concatenated to a string
        for i, v in enumerate(ar):
            # if the coef of the dyadic is 1, we skip the 1
            if ar[i][0] == 1:
                ol.append(' + (' + str(ar[i][1]) + '|' + str(ar[i][2]) + ')')
            # if the coef of the dyadic is -1, we skip the 1
            elif ar[i][0] == -1:
                ol.append(' - (' + str(ar[i][1]) + '|' + str(ar[i][2]) + ')')
            # If the coefficient of the dyadic is not 1 or -1,
            # we might wrap it in parentheses, for readability.
            elif ar[i][0] != 0:
                arg_str = VectorStrPrinter().doprint(ar[i][0])
                if isinstance(ar[i][0], Add):
                    arg_str = "(%s)" % arg_str
                if arg_str[0] == '-':
                    arg_str = arg_str[1:]
                    str_start = ' - '
                else:
                    str_start = ' + '
                ol.append(str_start + arg_str + '*(' + str(ar[i][1]) +
                          '|' + str(ar[i][2]) + ')')
        outstr = ''.join(ol)
        if outstr.startswith(' + '):
            outstr = outstr[3:]
        elif outstr.startswith(' '):
            outstr = outstr[1:]
        return outstr
def __str__ ( self , printer = None ) : ar = self . args # just to shorten things if len ( ar ) == 0 : return str ( 0 ) ol = [ ] # output list, to be concatenated to a string for i , v in enumerate ( ar ) : # if the coef of the dyadic is 1, we skip the 1 if ar [ i ] [ 0 ] == 1 : ol . append ( ' + (' + str ( ar [ i ] [ 1 ] ) + '|' + str ( ar [ i ] [ 2 ] ) + ')' ) # if the coef of the dyadic is -1, we skip the 1 elif ar [ i ] [ 0 ] == - 1 : ol . append ( ' - (' + str ( ar [ i ] [ 1 ] ) + '|' + str ( ar [ i ] [ 2 ] ) + ')' ) # If the coefficient of the dyadic is not 1 or -1, # we might wrap it in parentheses, for readability. elif ar [ i ] [ 0 ] != 0 : arg_str = VectorStrPrinter ( ) . doprint ( ar [ i ] [ 0 ] ) if isinstance ( ar [ i ] [ 0 ] , Add ) : arg_str = "(%s)" % arg_str if arg_str [ 0 ] == '-' : arg_str = arg_str [ 1 : ] str_start = ' - ' else : str_start = ' + ' ol . append ( str_start + arg_str + '*(' + str ( ar [ i ] [ 1 ] ) + '|' + str ( ar [ i ] [ 2 ] ) + ')' ) outstr = '' . join ( ol ) if outstr . startswith ( ' + ' ) : outstr = outstr [ 3 : ] elif outstr . startswith ( ' ' ) : outstr = outstr [ 1 : ] return outstr