求解答第一题哪里出错了

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#1 Created at ... [Delete] [Delete and Lock User]

def normalize(name)
    return map(lambda x: upper(x[0]) + lower( x[1:]), name)

#2 Created at ... [Delete] [Delete and Lock User]

好像写错了，忽略我

#3 Created at ... [Delete] [Delete and Lock User]

def normalize(name):
    return map(lambda x: (x[0].upper() + x[1:].lower()), name)

还是错了，求解惑

#4 Created at ... [Delete] [Delete and Lock User]

原来map()返回的是iterator ：(

最后改成这样

def normalize(name):
    return name[0].upper() + name[1:].lower()

#5 Created at ... [Delete] [Delete and Lock User]

def prod(L):
    return reduce(lambda x, y: x * y, L)

#6 Created at ... [Delete] [Delete and Lock User]

list(normalize(L1)) 没错啊