包含逗号的字符串如何进行分割的正则表达式？

Question

如何在Python中按逗号切分包含逗号的字符串？假设字符串为：

object = """{"alert", "Sorry, you are not allowed to do that now, try later", "success", "Welcome, user"}"""

如何确保我在拆分后只获得四个元素？

- Vintage

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“object = {”和“}”也包含在字符串中吗？ - falsetru

只有 {}。但我可以轻松地去掉它们。 - Vintage

Answer 1

>>> from ast import literal_eval
>>> obj = '{"alert", "Sorry, you are not allowed to do that now, try later", "success", "Welcome, user"}'
>>> literal_eval(obj[1:-1])
('alert', 'Sorry, you are not allowed to do that now, try later', 'success', 'Welcome, user')

在Python3.2及以上版本中，您可以简单地使用literal_eval(obj)。

- Ashwini Chaudhary

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根据快速测试结果，Python 2.7 抛出 ValueError 异常，而 Python 3.3 可以识别。 - falsetru

Answer 2

>>> import re
>>> re.findall(r'\"(.+?)\"', obj)
['alert', 'Sorry, you are not allowed to do that now, try later',
 'success', 'Welcome, user']

- ndpu