import re
PARAGRAPHS_RE = re.compile(r'''
<p>
( . +? )
</p>
''', re.VERBOSE)
text = "<p>Text with one paragraph</p><p>And another</p>"
text = PARAGRAPHS_RE.sub(r'\1', text)
# output Text with one paragraph And another
# .+? means that it will work as non greedy
# http://pycon2017.regex.training/more-re-module.html#greediness