Regular expression for validating url

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How can I check if a given string is a valid URL address? Surely a good start: msdn.microsoft.com/en-us/library/ff650303NB. The above page is retired, but the expressions in the table are essentially still valid for reference.

My knowledge of regular expressions is basic and doesn't allow me to choose from the hundreds of regular expressions I've already seen on the web. The URL expression recommended (and which worked great for me) is: "^(ht|f)tp(s?

or, see this url should work for most regex processors:/((? Followed by at least one or more valid domain characters (a-z, 0-9, or -)Matches without case sensitivity (/i)It does not enforce white space, so it will match this: blah and return you want to enforce space, add \s to the beginning, but then you have to ensure that you add a space to the beginning of the string to match. They can be replaced with matching groups () if your regex processor has trouble. It's not terribly strict, but it matches all standard domain names (but might let slip through some invalid ones).

Also, next time, you might want to include the programming language or context, because regex processors vary greatly in feature support.

This content is outdated and is no longer being maintained.

It is provided as a courtesy for individuals who are still using these technologies.

I have applied this in one of my projects and its working there. ([a-z A-Z0-9] (\.[a-z A-Z0-9] ) .*)$ Let me know if you face any problem.

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Regards, Abhishek when we are u using that time it working fine but that is not only web site ulr format for example ( .com, , , in ) like this lot of format is there .please post answer like all url validation supported ..

I'm incredibly new to Python and have been beating my head against the following problem for the past 3 days.

I have a class to represent an RSS Feed and in this class I have a method called set Url. I'm trying to use the re python module to validate off of the RFC 3986 Reg-ex ( Below is a snipped which There's no "validate" method because almost anything is a valid URL. Parse it, and look at the pieces to see if they're displeasing in some way.

:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])))|::(?

:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])))|(?

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