<p>您要查找的正则表达式是<code>r"\"value\":\"(\S+)\""</code>,您所需的字符串可以在匹配的<code>group(1)</code>中找到</p>
<p>这里有一个到regex的实时链接,其中包含要测试的测试字符串。Regex101还有代码生成器,可以用来生成所需的python代码和测试</p>
<p><a href="https://regex101.com/r/p2N524/1" rel="nofollow noreferrer">https://regex101.com/r/p2N524/1</a></p>
<hr/>
<pre><code>import re
regex = r"\"value\":\"(\S+)\""
test_str = "[\"supra\",\"value\":\"ddad7f1eada3c52c66cmh6ZG8tf-nLt1A596b7URouAxiT1JKph-ceBld-ISJapdG6bKrE1kvru158hLUBx2GdzABc6PHP-gNbnD8A==\"}};</script> "
matches = re.finditer(regex, test_str, re.MULTILINE)
for matchNum, match in enumerate(matches):
matchNum = matchNum + 1
print ("Match {matchNum} was found at {start}-{end}: {match}".format(matchNum = matchNum, start = match.start(), end = match.end(), match = match.group()))
for groupNum in range(0, len(match.groups())):
groupNum = groupNum + 1
print ("Group {groupNum} found at {start}-{end}: {group}".format(groupNum = groupNum, start = match.start(groupNum), end = match.end(groupNum), group = match.group(groupNum)))
</code></pre>
<h3>结果</h3>
<pre><code>Match 1 was found at 9-123: "value":"ddad7f1eada3c52c66cmh6ZG8tf-nLt1A596b7URouAxiT1JKph-ceBld-ISJapdG6bKrE1kvru158hLUBx2GdzABc6PHP-gNbnD8A=="
Group 1 found at 18-122: ddad7f1eada3c52c66cmh6ZG8tf-nLt1A596b7URouAxiT1JKph-ceBld-ISJapdG6bKrE1kvru158hLUBx2GdzABc6PHP-gNbnD8A==
</code></pre>