Put the new line after regex pattern

[deanhystad]

You asked for a newline after the pattern, not before. Should be an easy fix.

import re

text = """<img id="Picture_1">Blablablabla <img id="Picture_2">
Blablablabla<img id="Picture_1">Blablablabla
"""

matches = set(re.findall(r"<img.*?>", text, re.DOTALL))
for match in matches:
    text = text.replace(match, f"\n{match}\n")
print(text)

Of course you get extra blank lines if a line starts with or ends with the pattern.

Output:
<img id="Picture_1">
Blablablabla
<img id="Picture_2">

Blablablabla
<img id="Picture_1">
Blablablabla