如何使用正则表达式提取信息页面

Question

I'm having trouble capturing the contents of "name": he often appears before "pluralName" other later. What better way of doing this? (best way in terms of performance). Thank you for your help!

Note: I am using python

The chunk of the page that has the information I need:

{"count":0,"items":[]},"shortUrl":"http:\/\/4sq.com\/11nP13T","likes":{"count":22,"groups":[{"type":"others","count":22,"items":[]}],"summary":"22 Likes"},"ratingColor":"FF9600","id":"5172311be4b0ecc0a12a9953","canonicalPath":"\/v\/kee-hiong-klang-bak-kut-teh\/5172311be4b0ecc0a12a9953","canonicalUrl":"https:\/\/foursquare.com\/v\/kee-hiong-klang-bak-kut-teh\/5172311be4b0ecc0a12a9953","rating":5.3,"categories":[**{"pluralName":"Chinese Restaurants","name":"Chinese Restaurant",**"icon":{"prefix":"https:\/\/ss3.4sqi.net\/img\/categories_v2\/food\/asian_","mapPrefix":"https:\/\/ss3.4sqi.net\/img\/categories_map\/food\/chinese","suffix":".png"},"id":"4bf58dd8d48988d145941735","shortName":"Chinese","primary":true},{"pluralName":"Asian Restaurants","name":"Asian Restaurant","icon":{"prefix":"https:\/\/ss3.4sqi.net\/img\/categories_v2\/food\/asian_","mapPrefix":"https:\/\/ss3.4sqi.net\/img\/categories_map\/food\/asian","suffix":".png"},"id":"4bf58dd8d48988d142941735","shortName":"Asian"}],"createdAt":1366438171,"tips":{"count":25,"groups":[{"count":25,"items":[{"logView":true,"text":"Portion is quite small and expensive. Service attitude is so so. The BKT taste is not my preference.One of the up car restaurants in SS2 which I'll never go back again. 👎","likes":{"count":1,"groups":[{"type":"others","count":1,"items":[{"photo":{"prefix":"https:\/\/irs0.4sqi.net\/img\/user\/","suffix":"\/43964080-5LYADRF2EEP2RWPL.jpg"},"lastName":".w","firstName":"Jackie","id":"43964080","canonicalPath":"\/user\/43964080","canonicalUrl":"https:\/\/foursquare.com\/user\/43964080","gender":"female"}]}],"summary":"1 like"},"id":"541c2b73498eb0cfe1f76b9e","canonicalPath":"\/item\/541c2b73498eb0cfe1f76b9e","canonicalUrl":"https:\/\/foursquare.com\/item\/541c2b73498eb0cfe1f76b9e","createdAt":1.411132275E9,"todo":{"count":0},"user":{"photo":{"prefix":"https:\/\/irs1.4sqi.net\/img\/user\/","suffix":"\/5765949-NW4BAJWFBCVLRR1M.jpg"}

Answer 1

(?:"pluralName":"[^"]*","name":"([^"]*))|(?:"name":"([^"]*)","pluralName")

Try this with re.findall .See demo.

https://regex101.com/r/hR7tH4/4

print re.findall(r'(?:"pluralName":"[^"]*","name":"([^"]*))|(?:"name":"([^"]*)","pluralName")',test_str)

Answer 2

Don't use a regexp at all.

Instead, use a JSON parser, and access the resulting object. That is much more robust.

import json # part of python
o = json.loads(str)