python-基础题目：字符串解压缩

#把字符串a='3[ab]acc'，解压成‘abababacc’

a='3[ab]acc'

b = a.split(']')[0]

c = b.split('[')

d=int(c[0])*c[1]

e = d+a.a.split(']')[1]

print(e)