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In this video, you learn how to extract text that contains numbers for this example, we'll work on

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this.

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I piece the text file that I have in here and you can find this untouched in the lecture resources.

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So we have IP addresses in this text file.

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Our purpose is to extract only those IP addresses that start with 12 in the third part of the IP address.

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So that's the first, both the second and the third part.

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This starts with the 12th.

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The first one also starts with 12.

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So we want this and that's let's build the codes for that.

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With open eyepiece that you see in reading modes as file, we load the contents in a content variable

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using file that reads.

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So that is the contents in a variable now.

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We built the pattern, which is our readers compile with numbers now.

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We use a number range.

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So we want the first part, which could be any number.

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That means you want to use square brackets and use a number range.

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So we have digits from zero to nine.

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Right.

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And we want to match three times of three digits.

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That means we could have one digits from zero to nine two digits three digits maximum.

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Don't try to match more than that's because after that, we want to match a dots.

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So backslash dot actually, because adults is a special character, so we need two escapees with backslash.

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Then we have more ranges from zero to nine.

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Again, three times because every part of the IP address has three numbers.

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Again, backslash dot, we only want 12.

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So this time this would be a literal character.

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It's a one and two.

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Then after that, we could have any number.

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So again, the third number of this third part of the IP address could be anything from zero to nine.

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And we want to match it.

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Three.

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Sorry, one time only.

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So there's only one number after that.

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Then we have backslash dot and then the last parts could be again, anything so zero, two nine, three

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times.

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That's it.

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Matches are equal to pattern dot finds all content.

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And let's call them here, executes.

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And this is the output, so it's a list of two items and we have this item, which starts with 12 in

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the third part and the other IP address again, starting with 12.

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So simple and clear, that's how you would work with numeric texts such as IP addresses.

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I'll talk to you in the next video with some more examples.