Regular expression

[borthouth]

Hi,

I have multiple files with different filenames and want to test out regular expressions.

I can use regexp=".*" to pick up all files, and also regexp=".*\.xxx $" to pick up all files ending with ".xxx".

If I want to pick up files that does not finish with ".xxx" do I use regexp=".*[\^.xxx]$"

Thanks.

[bartonc]

Hi,

I have multiple files with different filenames and want to test out regular expressions.

I can use regexp=".*" to pick up all files, and also regexp=".*\.xxx $" to pick up all files ending with ".xxx".

If I want to pick up files that does not finish with ".xxx" do I use regexp=".*[\^.xxx]$"

Thanks.

The problem,here, is that you used the escape ('\') which makes the inverse set ('^') a literal. It should be:[CODE=python]>>> import re
>>> patt = ".*[^.xxx]$"
>>> fname = 'hello.abc'
>>> re.match(patt, fname)
<_sre.SRE_Mat ch object at 0x03262100>
>>> patt = ".*[^.abc]$"
>>> re.match(patt, fname)
>>> None[/CODE]

[bvdet]

Hi,

I have multiple files with different filenames and want to test out regular expressions.

I can use regexp=".*" to pick up all files, and also regexp=".*\.xxx $" to pick up all files ending with ".xxx".

If I want to pick up files that does not finish with ".xxx" do I use regexp=".*[\^.xxx]$"

Thanks.

This seems to work:[code=Python]patt = re.compile(r'.+ \.(?!xxx)')[/code]

[ghostdog74]

i certainly hope you are just testing regexp, because if you really want to get files that doesn't end with .xxx, you can use the endswith() method.

[bartonc]

i certainly hope you are just testing regexp, because if you really want to get files that doesn't end with .xxx, you can use the endswith() method.

That's worth a million, GD. Just one of the reasons that I am so glad that you decide to pop in every now-and-again. Thanks!