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Python Programming

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Regular Expressions<br />

Regular Expressions<br />

What is a Regular Expression?<br />

A string that is used to describe or match a set of strings, according to<br />

certain syntax rules.<br />

What can it be used for? Example:<br />

• Everyday, you are receiving a message (among others) from<br />

your application similar to this one:<br />

13/11/2007 08:01 Good morning Dr Jones. You have 3<br />

new messages.<br />

• How can we easily retrieve the number of messages for Dr<br />

Jones and the date and time, knowing that the date and time<br />

will change, that we might have other messages with a<br />

different name and that we are only retrieving the last<br />

message?<br />

39<br />

HP CONFIDENTIAL - ENABLEMENT ONLY, NOT FOR CUSTOMER USE.

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