Question

我在python中有一本字典如下。

path_definition = {
       '00:00:00:00:00:01':'00:00:00:00:00:04',
       '00:00:00:00:00:02':'00:00:00:00:00:05',
       '00:00:00:00:00:03':'00:00:00:00:00:06',
};

如果我这样做

for key in path_definition.keys()
      print('value {}'.format(path_definition[key])

由于某种原因它似乎不起作用。

Answer 1

你错了，试试这个：

for key in path_definition.keys():  #colon is missed
  print('value {}'.format(path_definition[key])) #a parenthesys is missed

Answer 2

由于您在问题中没有提到，您看到了什么错误（如果有的话），我现在看到您的代码存在两个问题：

您在:声明的末尾缺少for。
您在)声明的末尾遗漏了print。

解决这些问题：

>>> for key in path_definition.keys():
...     print('value {}'.format(path_definition[key]))
...
value 00:00:00:00:00:06
value 00:00:00:00:00:05
value 00:00:00:00:00:04

Answer 3

path_definition = {
       '00:00:00:00:00:01':'00:00:00:00:00:04',
       '00:00:00:00:00:02':'00:00:00:00:00:05',
       '00:00:00:00:00:03':'00:00:00:00:00:06' #comma not required
} #Semicolon not required


for key in path_definition.keys(): #semicolon missing
      print('value {}'.format(path_definition[key])) #extra parentheses missing

使用python中的字典中的键获取值不起作用

3 个答案: