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actually a relatively easy fix let me go
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ahead and do this as follows I'm going
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to first remove the old version of
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names.text and now I'm going to change
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my code to do this I'm going to change
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the W quote unquote to just a quote
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unquote a for append which means to add
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to the bottom to the bottom to the
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bottom again and again now let me go
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ahead and rerun python of names.pi and
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enter I'll again start from scratch with
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Hermione because I'm creating the file
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new notice that if I now do code of
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names.txt enter we do see that Hermione
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is back so we've after removing the file
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it did get recreated even though I'm
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using append which is good but now let's
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see what happens when I go back to my
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terminal and this time I run python of
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names.pi again this time typing in Harry
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and let me run it one more time this
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time typing in Ron so hopefully this
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time in that second tab names.text I
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should now see all three of them but but
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but but this doesn't look ideal what
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have I clearly done wrong
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foreign
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something tells me even though all three
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names are there it's not going to be
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easy to read those back unless you know
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where each name ends and Begins the
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English form it's not correctly
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the English format is not correct like
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it's a correct it's concatenating them
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it is it's it can it's well it appears
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to be concatenating but technically
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speaking it's just appending to the file
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first Hermione then Harry then Ron it
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has the effect of combining them back to
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back but it's not concatenating per se
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it really is just a pending let's go to
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another hand here what really have I
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done wrong or equivalently how might I
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fix
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it would be nice if there were some kind
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of gaps between each of the names so we
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could read them more cleanly Hello uh we
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should add a new line before we write
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new name good we want to add a new line
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ourselves so whereas print by default
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recall always outputs automatically a
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line ending of backslash n unless we
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override it with the named parameter
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called end write does not do that right
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takes you literally and if you say right
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Hermione that's it you're getting the H
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through the E if you say right Harry you
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get the H through the uh y you don't get
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any extra new lines automatically so if
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you want to have a new line at the end
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of each of these names we've got to do
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that manually so let me again close
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names.txt and let me remove the current
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file and let me go back up to my code
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here and I can fix this in any number of
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ways but I'm just going to go ahead and
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do this I'm going to write out an F
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string that contains name and backslash
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n at the end we could do this in
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different ways we could manually print
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just the new line or some other
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technique week but I'm going to go ahead
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and use my f strings as I'm in the habit
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of doing and just print to the name and
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the new line all at once I'm going to go
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ahead now and down to my terminal window
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run python of names dot Pi again enter
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we'll type in Hermione I'm going to run
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it again type in Harry I'm going to type
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it again and this time Ron now I'm going
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to run code of names.txt and open that
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file and now it looks like the file is a
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bit cleaner indeed I have each of the
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name on its own line as well as a line
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ending which ensures that we can
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separate one from the other now if I
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were you know writing code I bet I could
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parse that is read the previous file by
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looking at differences between lowercase
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and uppercase letters but that's going
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to get messy quickly generally speaking
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when storing data long term in a file
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you should probably do it somehow
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cleanly like doing one name at a time
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well let's now go back and I'll propose
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that this code is now working correctly
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but we can design it a little bit better
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it turns out that it's all too easy when
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writing code to sometimes forget to
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close files and sometimes this isn't
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