If number , convert it into number and push it into integerstack .
if ( Str [ i ] >= '0' and Str [ i ] <= '9' ) : NEW_LINE INDENT while ( Str [ i ] >= '0' and Str [ i ] <= '9' ) : NEW_LINE INDENT count = count * 10 + ord ( Str [ i ] ) - ord ( '0' ) NEW_LINE i += 1 NEW_LINE DEDENT i -= 1 NEW_LINE integerstack . append ( count ) NEW_LINE DEDENT