wx.Wizard creates pages using eval() in a List comprehension

[bartonc]

Examples of wx.Wizard that I found used explicit names for the pages.
Using eval() in a list comprehension, I am able to go through the imported modules by name and call create() in order to get a page instance. Neat trick, I think...

#Boa:Wizard:Wizard1

import wx
import wx.wizard

import SetupWizardPage1
import SetupWizardPage2

nSetupWizardPages = 2

def create(parent):
    return Wizard1(parent)

[wxID_WIZARD1] = [wx.NewId() for _init_ctrls in range(1)]

class Wizard1(wx.wizard.Wizard):
    def _init_ctrls(self, prnt):
        # generated method, don't edit
        wx.wizard.Wizard.__init__(self, bitmap=wx.NullBitmap, id=wxID_WIZARD1, parent=prnt,
              pos=wx.Point(459, 285), title='HETAP Data Collection Setup')

    def __init__(self, parent):
        self._init_ctrls(parent)

    ## the old way
##        page1 = SetupWizardPage1.ParkListPage(self)
##        self.page1 = page1
##        page2 = SetupWizardPage2.TrailListPage(self)

    ## I had to add create() to the SimpleWizardPage generated by Boa
        self.pages = pages = [eval("SetupWizardPage%d.create(self)" %i)
                              for i in range(1, nSetupWizardPages + 1)]

        self.FitToPage(pages[0])

    ## Once they're in a list, chaining becomes a snap
        for i in range(nSetupWizardPages - 1):
            # Use the convenience Chain function to connect the pages in a loop
            wx.wizard.WizardPageSimple_Chain(pages[i], pages[i + 1])


        self.GetPageAreaSizer().Add(pages[0])

    def GetFirstPage(self):
        """I make the wizard responsible for creating the pages, so the caller must
           be able to get the first page for the Wizard.Run() argument"""
        return self.pages[0]