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Okay, so I have these fruits.txt file

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in here, which has these four lines,

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which are not fruits anyway, but you get

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the idea, it's text. We want to add two

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more lines to this existing fruits.txt file.

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We don't know what is there at

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the moment. If you look at the open

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documentation, and scroll down, you will see

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[No audio]

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here that you can pass different

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modes in this argument here. So r

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which we used already, we used w, and then

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you have x. If you use x

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[Author typing]

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and try to write, let's say, Okra.

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If you execute that,

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[No audio]

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it's going to say that file

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exists. So unlike the w mode, which

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overwrite a file, x will not overwrite

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the file if the file exists. However, it

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cannot append content to an existing

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file, because it says that the file

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exists. Therefore, we jump to the next

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mode, which is a.

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[No audio]

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You see that Okra was

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added there, of course, with a small

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issue, because there was not a break

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line here in the text, in the existing

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text file. So that's some information

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you should know, and if you know there

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is no break line, then you would need to, let

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me save this text file, then you'd need

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to add a break line there to get the

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correct output. So anytime you add a new

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line, you'd need to add a break line in

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front. Now, how about reading that content?

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[No audio]

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Maybe saving it a, save it in a

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variable and print out the content. Will

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it work? I don't think so. It says that

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the operation is not supported, the

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file is not readable. It's a, which is

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for appending. If you wants to append, to

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write and it reads at the same time, you

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want to add a '+'.

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[No audio]

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Just like that,

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execute, you get an empty output. Why?

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Because of the cursor. So what's

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happened is that when we added the

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Okra line there, so at first you

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created the file, here at this point,

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the cursor is here, okay? Then you write

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the file. In this line, the cursor goes

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to the ends of the file.

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[No audio]

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So when you read now, you'd read whatever is left under

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the last line, which is nothing. What

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you can do is myfile.seek, apply a seek

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method to put the cursor at the 0

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position once again.

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In that case, the

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cursor will go to the end, it will go

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again to the 0 position with this

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line, and then you'll read everything

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from there and down. So you get the

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correct output.

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[No audio]