What steps will reproduce the problem? 1. Set up a gui.ListView with at least 1 gui.ListColumn 2. Populate the gui.ListColumn with numbers (must be strings) 3. Run your gui code 4. Sort the list by clicking on the col name in the gui

What is the expected output? What do you see instead? I want the numbers to be sorted in correct ascending or descending order. Currently they are sorted as such: 1, 11, 2, 2345, 3.

What version of the product are you using? On what operating system? Current version from github (https://github.com/reingart/gui2py/commit/b5a37bc7a8e6aa88e8a38acae7e49f0f07dd1168)

Please provide any additional information below. I've attached a file showing screenshots of the current results. I've clicked on the col name "Laps".

I am using wxPython3.0-win32-py27 on a windows 7 machine.

I realized that I could work around this by hacking together some string formatting which grabs the decimal, floors the number, rjust to right align, merge the round number back with the decimal and then insert into the listview.

Feels dirty:

def format_listitem(number,dec=1): """ Accepts a number (either integer or floating point) and returns a formatted string for use in listviews """

rounded = int(math.floor(float(number)))
if dec == 1:
    decimal = "{0:.1f}".format(float(number) - float(rounded))
elif dec == 2:
    decimal = "{0:.2f}".format(float(number) - float(rounded))
formatted_string = "%s.%s" % (str(rounded).rjust(3), str(decimal))
formatted_string = formatted_string.replace(".0.",".")  

return formatted_string

However, rjust trickery can't fix sorting issues if the list contains positive and negative numbers :(

I figure that if I wasn't using gui2py I could set up a ColumnSorterMixin that made use of something like this:

def natural_keys(text): ''' alist.sort(key=natural_keys) sorts in human order http://nedbatchelder.com/blog/200712/human_sorting.html '''
return [ atoi(c) for c in re.split('([-]?\d+)', text) ]