1

我通过套接字接收数据，一堆 JSON 字符串。但是，我收到了一定数量的字节，所以有时我的最后一个 JSON 字符串会被截断。我通常会得到以下信息：

{"pitch":-30.778193,"yaw":-124.63285,"roll":-8.977466}
{"pitch":-30.856342,"yaw":-124.57556,"roll":-7.7220345}
{"pitch":-31.574106,"yaw":-124.65623,"roll":-7.911794}
{"pitch":-30.479567,"yaw":-124.24301,"roll":-8.730827}
{"pitch":-29.30239,"yaw":-123.97949,"roll":-8.134723}
{"pitch":-29.84712,"yaw":-124.584465,"roll":-8.588374}
{"pitch":-31.072054,"yaw":-124.707466,"roll":-8.877062}
{"pitch":-31.493435,"yaw":-124.75457,"roll":-9.019922}
{"pitch":-29.591925,"yaw":-124.960815,"roll":-9.379437}
{"pitch":-29.37105,"yaw":-125.14427,"roll":-9.642341}
{"pitch":-29.483717,"yaw":-125.16528,"roll":-9.687177}
{"pitch":-30.903332,"yaw":-124.603935,"roll":-9.423098}
{"pitch":-30.211857,"yaw":-124.471664,"roll":-9.116135}
{"pitch":-30.837414,"yaw":-125.18984,"roll":-9.824204}
{"pitch":-30.526165,"yaw":-124.85788,"roll":-9.158611}
{"pitch":-30.333513,"yaw":-123.68705,"roll":-7.9481263}
{"pitch":-30.903502,"yaw":-123.78847,"roll":-8.209373}
{"pitch":-31.194769,"yaw":-124.79708,"roll":-8.709783}
{"pitch":-30.816765,"yaw":-125

使用 Python，我想创建一个包含前 18 个完整{ data... }字符串的字符串数组。

这是我尝试过的：cleanData = re.search('{.*}', data)但这似乎只是给了我第一个{ data... }条目。如何获得完整的 { } 集的完整字符串数组？

4

3 回答 3

6

要获取所有内容，您可以使用re.finditer或re.findall。

>>> re.findall(r'{.*}', s)
['{"pitch":-30.778193,"yaw":-124.63285,"roll":-8.977466}', '{"pitch":-30.856342,"yaw":-124.57556,"roll":-7.7220345}', '{"pitch":-31.574106,"yaw":-124.65623,"roll":-7.911794}', '{"pitch":-30.479567,"yaw":-124.24301,"roll":-8.730827}', '{"pitch":-29.30239,"yaw":-123.97949,"roll":-8.134723}', '{"pitch":-29.84712,"yaw":-124.584465,"roll":-8.588374}', '{"pitch":-31.072054,"yaw":-124.707466,"roll":-8.877062}', '{"pitch":-31.493435,"yaw":-124.75457,"roll":-9.019922}', '{"pitch":-29.591925,"yaw":-124.960815,"roll":-9.379437}', '{"pitch":-29.37105,"yaw":-125.14427,"roll":-9.642341}', '{"pitch":-29.483717,"yaw":-125.16528,"roll":-9.687177}', '{"pitch":-30.903332,"yaw":-124.603935,"roll":-9.423098}', '{"pitch":-30.211857,"yaw":-124.471664,"roll":-9.116135}', '{"pitch":-30.837414,"yaw":-125.18984,"roll":-9.824204}', '{"pitch":-30.526165,"yaw":-124.85788,"roll":-9.158611}', '{"pitch":-30.333513,"yaw":-123.68705,"roll":-7.9481263}', '{"pitch":-30.903502,"yaw":-123.78847,"roll":-8.209373}', '{"pitch":-31.194769,"yaw":-124.79708,"roll":-8.709783}']
>>>

或者

>>> [x.group() for x in re.finditer(r'{.*}', s)]
['{"pitch":-30.778193,"yaw":-124.63285,"roll":-8.977466}', '{"pitch":-30.856342,"yaw":-124.57556,"roll":-7.7220345}', '{"pitch":-31.574106,"yaw":-124.65623,"roll":-7.911794}', '{"pitch":-30.479567,"yaw":-124.24301,"roll":-8.730827}', '{"pitch":-29.30239,"yaw":-123.97949,"roll":-8.134723}', '{"pitch":-29.84712,"yaw":-124.584465,"roll":-8.588374}', '{"pitch":-31.072054,"yaw":-124.707466,"roll":-8.877062}', '{"pitch":-31.493435,"yaw":-124.75457,"roll":-9.019922}', '{"pitch":-29.591925,"yaw":-124.960815,"roll":-9.379437}', '{"pitch":-29.37105,"yaw":-125.14427,"roll":-9.642341}', '{"pitch":-29.483717,"yaw":-125.16528,"roll":-9.687177}', '{"pitch":-30.903332,"yaw":-124.603935,"roll":-9.423098}', '{"pitch":-30.211857,"yaw":-124.471664,"roll":-9.116135}', '{"pitch":-30.837414,"yaw":-125.18984,"roll":-9.824204}', '{"pitch":-30.526165,"yaw":-124.85788,"roll":-9.158611}', '{"pitch":-30.333513,"yaw":-123.68705,"roll":-7.9481263}', '{"pitch":-30.903502,"yaw":-123.78847,"roll":-8.209373}', '{"pitch":-31.194769,"yaw":-124.79708,"roll":-8.709783}']
>>>
于 2013-07-23T15:58:29.320 回答
3

你需要re.findall()（或re.finditer）

>>> import re
>>> for r in re.findall(r'{.*}', data)[:18]:
    print r


{"pitch":-30.778193,"yaw":-124.63285,"roll":-8.977466}
{"pitch":-30.856342,"yaw":-124.57556,"roll":-7.7220345}
{"pitch":-31.574106,"yaw":-124.65623,"roll":-7.911794}
{"pitch":-30.479567,"yaw":-124.24301,"roll":-8.730827}
{"pitch":-29.30239,"yaw":-123.97949,"roll":-8.134723}
{"pitch":-29.84712,"yaw":-124.584465,"roll":-8.588374}
{"pitch":-31.072054,"yaw":-124.707466,"roll":-8.877062}
{"pitch":-31.493435,"yaw":-124.75457,"roll":-9.019922}
{"pitch":-29.591925,"yaw":-124.960815,"roll":-9.379437}
{"pitch":-29.37105,"yaw":-125.14427,"roll":-9.642341}
{"pitch":-29.483717,"yaw":-125.16528,"roll":-9.687177}
{"pitch":-30.903332,"yaw":-124.603935,"roll":-9.423098}
{"pitch":-30.211857,"yaw":-124.471664,"roll":-9.116135}
{"pitch":-30.837414,"yaw":-125.18984,"roll":-9.824204}
{"pitch":-30.526165,"yaw":-124.85788,"roll":-9.158611}
{"pitch":-30.333513,"yaw":-123.68705,"roll":-7.9481263}
{"pitch":-30.903502,"yaw":-123.78847,"roll":-8.209373}
{"pitch":-31.194769,"yaw":-124.79708,"roll":-8.709783}
于 2013-07-23T15:58:28.830 回答
0

在遍历文件中的行时，无需任何正则表达式、使用str.startswith和方法即可提取以特定字符开头和结尾的行：str.endswith

results = []
with open(filepath, 'r') as f:
    for line in f:
        if line.startswith('{') and line.rstrip('\n').endswith('}'):
            results.append(line.rstrip('\n'))

请注意，.rstrip('\n')之前使用的是.endswith确保最终换行符不会干扰}字符串末尾的检查。

于 2019-05-30T22:54:46.537 回答