Input must be 64-char hex string

def privtopub(priv,outcompressed=True):
    '''
    Input must be 64-char hex string
    '''

    x, y = ecmultiply(Gx,Gy,int(priv,16))
    x = dechex(x,32)
    y = dechex(y,32)
    o = '04' + x + y
    if outcompressed:
        return compress(o)
    else:
        return o