python - Doctest NORMALIZE_WHITESPACE 不起作用

Question

Failed example:
    p.parse_name('Adams, Michael') 
    # doctest: +NORMALIZE_WHITESPACE
Expected:
    {'first_name': 'Michael', 'last_name': 'Adams','initials': 'MA'}
Got:
    {'first_name': 'Michael', 'last_name': 'Adams', 'initials': 'MA'}

文档字符串是 -

>>> p.parse_name('Adams, Michael') 
... # doctest: +NORMALIZE_WHITESPACE
{'first_name': 'Michael', 'last_name': 'Adams','initials': 'MA'}

Answer 1

来自 the docs :

When specified, all sequences of whitespace (blanks and newlines) are treated as equal. Any sequence of whitespace within the expected output will match any sequence of whitespace within the actual output

',' 不包含空格序列，因此不被视为等于 ', '。

---

您可能想阅读 warnings section文档的:

Python doesn’t guarantee that the key-value pairs will be printed in any particular order, so a test like

>>> foo()
{"Hermione": "hippogryph", "Harry": "broomstick"}

is vulnerable! One workaround is to do

>>> foo() == {"Hermione": "hippogryph", "Harry": "broomstick"}
True