Python flash code show error ')' expected

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Hello,

In my python Flask project I have this line of code in html file which is showing the error:
) expected

I don't know what is wrong the code

What I have tried:

HTML

<header class="masthead" style="background-image: url(' {{ url_for('static', filename='assets/img/home-bg.jpg')}} ')">

Posted 2-Oct-24 21:08pm

nyt1972

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Peter_in_2780 3-Oct-24 3:13am

Count your ( and ), { and }. They need to match and be nested correctly.

nyt1972 3-Oct-24 3:23am

counted several times and they are nested correctly too

Richard Deeming 3-Oct-24 3:34am

Perhaps it's confused by having single quotes nested inside single quotes? Try HTML-encoding the quotes:

style="background-image: url(&apos;{{ url_for('static', filename='assets/img/home-bg.jpg')}}&apos;)"

nyt1972 3-Oct-24 3:43am

Good it worked thanks, even though VSCode is still showing the same error, but on browser in worked.

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Richard Deeming · Accepted Answer · 2024-10-02T21:51:00

As discussed in the comments, it's getting confused by the nested single quotes. HTML-encoding the outer pair allows it to work, although VS Code still shows an error.