Python Json Parse

Question

在将json字符串存储到数据库期间，我犯了一个错误。无意中我没有将字符串存储为json，但我将其存储为Object的字符串形式。

我收到了

  

my_jstring [＆＃39;字段＆＃39;]

我已将字符串作为字符串插入数据库。

my_jstring [＆＃39; field＆＃39;]不是json，而是python json对象。是否可以再次解析这个字符串格式的对象？

我的字符串如下：

'"\'{u\'\'full_name\'\': u\'\'Dublin City\'\', u\'\'url\'\':  u\'\'https://api.twitter.com/1.1/geo/id/7dde0febc9ef245b.json\'\', u\'\'country\'\': u\'\'Ireland\'\', u\'\'place_type\'\': u\'\'city\'\', u\'\'bounding_box\'\': {u\'\'type\'\': u\'\'Polygon\'\', u\'\'coordinates\'\': [[[-6.3873911, 53.2987449], [-6.3873911, 53.4110598], [-6.1078047, 53.4110598], [-6.1078047, 53.2987449]]]}, u\'\'contained_within\'\': [], u\'\'country_code\'\': u\'\'IE\'\', u\'\'attributes\'\': {}, u\'\'id\'\': u\'\'7dde0febc9ef245b\'\', u\'\'name\'\': u\'\'Dublin City\'\'}\'"'

Answer 1

使用ast.literal_eval()将Python文字解析回Python对象。

您似乎已经双重重新评估了该值，但添加了额外的单引号。这些也需要修理：

data = ast.literal_eval(data)
data = data[1:-1].replace("''", "'")
obj = ast.literal_eval(data)

演示：

>>> import ast
>>> data = '"\'{u\'\'full_name\'\': u\'\'Dublin City\'\', u\'\'url\'\':  u\'\'https://api.twitter.com/1.1/geo/id/7dde0febc9ef245b.json\'\', u\'\'country\'\': u\'\'Ireland\'\', u\'\'place_type\'\': u\'\'city\'\', u\'\'bounding_box\'\': {u\'\'type\'\': u\'\'Polygon\'\', u\'\'coordinates\'\': [[[-6.3873911, 53.2987449], [-6.3873911, 53.4110598], [-6.1078047, 53.4110598], [-6.1078047, 53.2987449]]]}, u\'\'contained_within\'\': [], u\'\'country_code\'\': u\'\'IE\'\', u\'\'attributes\'\': {}, u\'\'id\'\': u\'\'7dde0febc9ef245b\'\', u\'\'name\'\': u\'\'Dublin City\'\'}\'"'
>>> data = ast.literal_eval(data)
>>> data = data[1:-1].replace("''", "'")
>>> obj = ast.literal_eval(data)
>>> obj
{u'country_code': u'IE', u'url': u'https://api.twitter.com/1.1/geo/id/7dde0febc9ef245b.json', u'country': u'Ireland', u'place_type': u'city', u'bounding_box': {u'type': u'Polygon', u'coordinates': [[[-6.3873911, 53.2987449], [-6.3873911, 53.4110598], [-6.1078047, 53.4110598], [-6.1078047, 53.2987449]]]}, u'contained_within': [], u'full_name': u'Dublin City', u'attributes': {}, u'id': u'7dde0febc9ef245b', u'name': u'Dublin City'}