使用正则表达式将python中的字符串中的布尔真转换为真[重复]

Posted 2023-02-23

【中文标题】使用正则表达式将python中的字符串中的布尔真转换为真[重复]

【英文标题】：Convert Boolean true to True in a string in python using regex [duplicate]

【发布时间】：2020-03-31 10:22:12

【问题描述】：

我是 python 新手。我有一个如下所示的字符串

 """["key":"aadsas","doc":"uniq_id":"false key","retail_price":799,"offer":false,"key":"aadsas","doc":"uniq_id":"false key","retail_price":799,"offer":true,"key":false,"doc":"uniq_id":"false key","retail_price":799,"offer":true
]"""

我需要使用ast 将其转换为字典列表。但由于false 在offer 键中，它显示malformed string error。 我知道python接受True作为布尔值而不是true。所以我使用re 模块将其转换为False，但在字符串中，出现了更多false 或true。 我需要将字符串中的所有唯一布尔值转换为 python 布尔值。我不知道 regex 格式来改变它。帮我解决一些问题。

import re, ast 
a= """["key":"aadsas","doc":"uniq_id":"false key","retail_price":799,"offer":false,"key":"aadsas","doc":"uniq_id":"false key","retail_price":799,"offer":true,"key":false,"doc":"uniq_id":"false key","retail_price":799,"offer":true
]"""
a = ast.literal_eval(a)
print(a)

所需输出：

["key":"aadsas","doc":"uniq_id":"false key","retail_price":799,"offer":False,"key":"aadsas","doc":"uniq_id":"false key","retail_price":799,"offer":True,,"key":False,"doc":"uniq_id":"false key","retail_price":799,"offer":True
]

【问题讨论】：

你应该使用json而不是ast模块。

如何制作..

ideone.com/NjnSZN

@Wiktor Stribiżew，谢谢.. 成功了

【参考方案1】：

如上面评论部分所述，您应该改用json 模块，更具体地说是json.loads：

>>> l="""["key":"aadsas","doc":"uniq_id":"false key","retail_price":799,"offer":false,"key":"aadsas","doc":"uniq_id":"false key","retail_price":799,"offer":true,"key":false,"doc":"uniq_id":"false key","retail_price":799,"offer":true ]"""
>>>
>>> import json
>>> json.loads(l)
['key': 'aadsas', 'doc': 'uniq_id': 'false key', 'retail_price': 799, 'offer': False, 'key': 'aadsas', 'doc': 'uniq_id': 'false key', 'retail_price': 799, 'offer': True, 'key': False, 'doc': 'uniq_id': 'false key', 'retail_price': 799, 'offer': True]