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We'll come to an overview of our Python business today.

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We will talk about how to work and manipulate strings in Python.

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Let's start with making a string lower or uppercase in Python.

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We have a lowercase string now, let's capitalize it using the upper function.

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Now it's reverted back to a whole lower case using the lower function

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cool.

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Now let's take a look at the split function since it's very important in Python.

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The split function will split in a string.

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You happen to illest by default.

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It will split your string using space as a delivery.

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Let's see how it works.

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I'm going to create a variable that holds the string.

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Hello World.

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Notice there is a space between hello and world and that's how our split function will split our string

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into one list with two elements.

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Let's check the time of our variable now,

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as you noticed, is change from string to a list.

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Now we can only access the first element using number zero.

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Let's see how we use this with function to split usernames and from passwords in an output that we have

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now, we split this output with this function into two parts.

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We will use the first part with zero and then we split it again.

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But this time we will use Colen as a delimiter.

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Now we get this, we get the second element, which is number one, and that should give us our username.

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We can all we can do all of that again, but in the same line, let's try that.

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Nice.

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Let's do it again and save it in a different variable called user.

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Now, let's do the same with the password, but keep in mind, the password part is the second element.

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If we split it so it will be element number one, not zero.

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Looks like it didn't like our key.

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Let's try it with a password.

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Nice.

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Now let's take a look at the replace function when we create our own PIN testing tools.

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We sometimes need to read a file and replace or insert a word in that file.

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Let's see an example.

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And create a variable of the string python.

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Now let's replace the word python with Ruby.

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We sometimes have a new line in our string, but we can see it first, let's see how how we identify

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a new line, our strength, and then how do we remove it?

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Let's print our variable, my.

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If you notice here, we have a new line.

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But normally sometimes you don't see that.

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But if we print our string using the R e park or represent function, we can see everything in it.

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Now we can see the new line, it's a backslash, and at the end, let's remove this new line at the

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end of our string using the strip function.

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Nice.

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We can also remove it using the replace function and replace the new language that empty quotes.

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Let's try that.

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It is gone.

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We get the same result, but the strip function only removes new line at the end of the string.

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So if we now changed a new line to be in the middle of our string, it won't work.

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And that's when we use the replace function and instead we have reached the end of this lesson.

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Thank you.

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And see you in the next one.