celadevra

1c31
<     @library = find_python_lib
---
>     @library = 'python2'
126c126
<     %x(#{@python} -c "#{command}").chomp if @python
---
>     %x("#{@python} -c #{command}").chomp if @python

celadevra

; Write a function similar to `triangle' in which each row has a value which is the square of the row number.  Use a `while' loop.

(defun square-triangle (number-of-rows)
"Calculate the total number of pebbles in a triangle where the number of
pebbles in each row is the square of the number of the row."
(let ((total 0)
      (row-number 1))
  (while (<= row-number number-of-rows)
    (setq total (+ total (* row-number row-number)))
    (setq row-number (1+ row-number)))