为什么 collections.Counter 是大写而 collections.defaultdict 不是？
Why is collections.Counter uppercase and collections.defaultdict is not?
collections 模块中的某些元素似乎是大写的，而另一些则不是。它背后有特定的理由吗？
根据 this reddit 评论
All classes written in python are upper camel case.
All types based on C code are lower. [like the primitives]
namedtuple is a function, thus follows the naming convention of functions. deque and defaultdict are types, (C); Counter and OrderedDict are classes, (Python).
collections 模块中的某些元素似乎是大写的，而另一些则不是。它背后有特定的理由吗？
根据 this reddit 评论
All classes written in python are upper camel case.
All types based on C code are lower. [like the primitives]
namedtupleis a function, thus follows the naming convention of functions.dequeanddefaultdictare types, (C);CounterandOrderedDictare classes, (Python).