CFD score FIX

[ACTG802]

I've noticed you're CFD scoring for each individual off-target sequence is the same. Try this fix.......

def calc_cfd_e(sg,wt,pam,mm_scores,pam_scores):
    score = 1
    wt = wt.replace('T','U')
    sg = sg.replace('T','U')
    #wt_list = list(wt)
    #sg_list = list(sg)

    shorter, longer = sorted([sg, wt], key=len)
    for i in range(-len(shorter), 0):
        if (sg[i] != =wt[i]):
            key = 'r' + sg[i] + ':d' + revcom(wt[i]) + ',' + str(20 + i + 1)
            score *= mm_scores[key]

     score *= pam_scores[pam[-2:]]
    

    #for i,wl in enumerate(wt_list):
    #        try:
     #           key = 'r'+sg_list[i]+':d'+revcom(wl)+','+str(i+1)
     #           score*= mm_scores[key]
      #      except KeyError:
       #         continue
    #score*=pam_scores[pam]
    return (score)