Python Plotting multiple graphs for a function with 3 different parameters - of different values of each parameters while fixing the 2 others -

Question

Could you please check my code and tell me why it's not working:

def plotSabrImplVolSmile (security, context, expiry, N, lstalpha, lstvov, lstrho):
    strikesGrid=sabr_fitting.normStrikeGrid(security, context, expiry, N, stdDevMin=-2, stdDevMax=2)
    def sabrImplVolList(alpha, vov, rho):
        sabrImplVol=[sabr_fitting.sabrImpliedVol(sabr_fitting.fwdAtmVolVolTime(security,context,expiry)[0], K, alpha, vov, rho, volTimeTex)   for K in strikesGrid ]
        return sabrImplVol
    if len(lstalpha)>=2:
        vov=lstvov[0]
        rho=lstrho[0]
        for i,aalpha in zip( range( len(lstalpha) ) ,lstalpha ):
            return sabrImplVolList(aalpha, vov, rho) , lstalpha
    elif len(lstvov)>=2:
        alpha=lstalpha[0]
        rho=lstrho[0]
        for i,rrho in zip(range(len(lstrho)),lstrho):
            return sabrImplVolList(alpha, vov, rrho) , lstrho
    else:
        alpha=lstalpha[0]
        vov=lstvov[0]
        for i,rrho in zip(range(len(lstrho)),lstvov):
            return sabrImplVolList(alpha, vvov, rho) , lstvov

This is the example of the case where I fix rho and vov and I change the parameter alpha:

SIValpha=plotSabrImplVolSmile (security, context, expiry, 5, [1,1.5], [2], [0.1])
plt.plot(strikesGrid,SIValpha[0], color = cm.rainbow( np.linspace(0, 1, len(SIValpha[1]) ) , label=' alpha{}.format(i)='{}'.format(SIValpha[1][i])' )

I keep getting this erreor

SyntaxError: unexpected EOF while parsing