[web2py] How to make a progress bar/meter in web2py?

[Henri Heinonen]

I made a progress meter in web2py, but it only shows up in the terminal 
window. How can I make the progress bar/meter to work in the web2py's HTML 
page?

Here's a part of the code:

    k = 1 # This is the loop variable for subplots.
    for counter in nus:
        fig = plt.figure()
        D = E*(h**3)/(12*(1-counter**2)) # Cylindrical rigidity.
        T0 = (L**2)/(D*np.pi**2)*T0_orig # Nondimensional tension.
        amax = T0/kappa # Maximum allowed alpha (to keep tension nonnegative 
everywhere).
        alphas = [0, (10**-6)*amax, (10**-4)*amax, (10**-2)*amax] # 
Nondimensional alphas to use for plot.
        workdone = 0.0 # How much of the Figure has been calculated? 0.0 = 
none, 1.0 = Figure is ready to show.
        workstep = 100.0/len(alphas) # How much work is done during one step 
in the loop? If there are 4 steps in the loop, then then step will be 
100.0/4 = 25.0.
        for alpha in alphas:
            lambda_, xx, f = nonhomog_solver(kappa, alpha, nu, nx)
            V0 = np.sqrt( T0_orig/m + np.pi**2 * D/(m*L**2)*lambda_ )
            if (k == 1):
                V0_ref = V0
            
            # Figure 1
            fig_a = fig.add_subplot(2,2,k)
            fig.subplots_adjust(hspace=0.4)
            if (k == 1):
                fig_a.set_title(r'$\alpha / \alpha_{max} = %.2g, V_{0}^{ref} 
= %.6g$ m/s' % (alpha/amax, V0))
            else:
                fig_a.set_title(r'$\alpha / \alpha_{max} = %.2g, 
V_{0}/V_{0}^{ref} = %.6g$' % (alpha/amax, V0/V0_ref))
            fig_a.plot(xx,f)
            plt.xlim(-kappa,kappa)
            plt.xlabel(r'$\eta$')
            plt.ylim(-0.1,1.1)
            if ((k == 1) or (k == 3)):
                plt.ylabel(r'$f(\eta)$')
            workdone = workdone + workstep
            print "Figure 1:", workdone, "%/100.0% done."
            
            # Let's get ready for the next subfigure.
            k = k + 1