python - 正規表現は何も返しません。なんで？

Question

これは何も返しませんか？

# Enter your code for "Image Extractor" here.
import re
with open('site.html') as html:
    content = html.read()
    content = str(content)
    print(re.findall(r'<ima?ge?\s+[^>]*?src=["|\']([^["|\']]+)', content))

式からバックスラッシュをエスケープすることと関係があると思います...

Answer 1

[^["|\']]

I'm not sure what you wanted this to do. You can't nest character classes or use | for alternation in a character class. The way you have it now, this section matches any character that isn't one of the following:

[
"
|
'

followed by a literal ]. If you wanted this to be a single character class that matches anything but a single or double quote, you wanted

[^"\']