LazyDict

class deepfos.lib.utils.LazyDict(dict=None, /, **kwargs)

元素延迟初始化的字典

元素的值只会在使用时被计算

>>> def call(*args):
...     print('calc')
...     return sum(args)
>>> ld = LazyDict()
>>> ld['a'] = (call, 1, 2, 3)
>>> ld['b'] = (call, 4, 5, 6)
>>> ld['a']
calc
6
>>> ld['a']
6

参见

LazyList