python regex：匹配第一個“}”

Question

我有一個字符串s包含：

Hello {full_name} this is my special address named {address1}_{address2}.

我試圖匹配花括號中包含的所有字符串實例。

嘗試：-

matches = re.findall(r'{.*}', s)

給我

['{full_name}', '{address1}_{address2}']

但是我實際上試圖檢索的是

['{full_name}', '{address1}', '{address2}']

我怎樣才能做到這一點？

Answer 1

>>> import re
>>> text = 'Hello {full_name} this is my special address named {address1}_{address2}.'
>>> re.findall(r'{[^{}]*}', text)
['{full_name}', '{address1}', '{address2}']

Answer 2

嘗試非貪婪的比賽：

matches = re.findall(r'{.*?}', s)

Answer 3

您需要一個非貪婪的量詞：

matches = re.findall(r'{.*?}', s)

注意問號? 。