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问题描述
我试图遍历输入字符串的元素，并从字典中获取它们.我在做什么错了?
I'm trying to loop over elements of an input string, and get them from a dictionary. What am I doing wrong?
number_map = { 1: -3, 2: -2, 3: -1, 4: 1, 5: 2, 6: 3 }
input_str = raw_input("Enter something: ")
strikes = [number_map(int(x)) for x in input_str.split()]
strikes = [number_map(int(x)) for x in input_str.split()]
TypeError: 'dict' object is not callable
推荐答案
在给定键的情况下访问字典的语法为number_map[int(x)]. number_map(int(x))实际上是一个函数调用，但是由于number_map不是可调用的，因此会引发异常.
The syntax for accessing a dict given a key is number_map[int(x)]. number_map(int(x)) would actually be a function call but since number_map is not a callable, an exception is raised.
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