Python 正则表达式 : find all lines that start with '{' and end with '}'

Question

我正在通过套接字接收数据，即一堆 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 { 数据。 .. } 条目。如何获取完整 { } 集的完整字符串数组？

Answer 1

要全部获取，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

>>> [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}']
>>>