Regex similar to "^(?u)\w$", but without digits?

John Machin sjmachin at
Sun Apr 12 02:08:08 CEST 2009

On Apr 12, 4:29 am, Andreas <a.pfren... at> wrote:
> Hello,
> I'd like to create a regex that captures any unicode character, but
> not the underscore and the digits 0-9.

[requirement 1]

> "^(?u)\w$" captures them also.
> Is there a possibility to restrict an expression like "\w" to "\w
> without [0-9_]"?

[requirement 2]

The two requirements are not the same.
R1: [^0-9_] matches any character except the underscore and the digits
R2: To match "like \w except for underscore and digits 0-9", find
"negative lookbehind assertion" in the re docs.

I've omitted the ^, $ and (?u) because the above advice is general.


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