python - 您好，我的任务是编写函数并通过测试。我只能通过一项测试，有人可以帮助我完成第二项测试吗？

Question

我的任务是编写函数 def myreplace(old, new, s): 并通过测试。我可以通过第一个测试，但我不能通过第二个测试，因为有很多空格。有没有办法做到这一点？

def myreplace(old, new, s):
    # Replace all occurrences of old with new in s...
    new_s = ""
    for i in s.split():
        s.split(old)
        new_s = new.join(s.split(old))
    return new_s


test(myreplace(",", ";", "this, that, and some other thing") ==
         "this; that; and some other thing")
test(myreplace(" ", "**",
                   "Words will now      be  separated by stars.") ==
         "Words**will**now**be**separated**by**stars.")

标签： python

Answer 1

这个怎么样：

def myreplace(old, new, s):
    # Replace all occurrences of old with new in s...
    if old == ' ':
        return new.join(s.split())
    else:
        return new.join(s.split(old))