小编los*_*g12的帖子

>>> count = 0
>>> for c in "##.#.":
...     count = count + 1 if c == '.' else 0
... 
>>> print(count)
1
>>> count = 0
>>> for c in "##.#.":
...     count = count + (1 if c == '.' else 0)
... 
>>> print(count)
2

为什么第一个示例不打印出计数器 2？