Python 封装一个函数，查找文字字符串数字英文下标

def abc(str,data):
    count = []
    numMax = 0
    for a in range(len(str)):
        if a == 0:
            temp = str.find(data, numMax, len(str))
        else:
            temp = str.find(data, numMax+1, len(str))
        if temp != -1:
            for i in range(len(data)):
                count.append(temp + i)
        elif numMax == 0 and count != None:
            return -1
        if numMax == max(count):
            return count
        numMax = max(count)
# print(abc(input("请输入一个序列为查找基础："),input("输入查找内容：")))
print(abc("abcfgggabjfhgfabc","abc"))