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We need to find the directory of where our project is being built.
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I'm gonna build this whole project
in a file named builder.py.
0:00
To use this tool, we'll just run
the script at the command line and
0:04
give it some data.
0:07
So let's start off with def main, and
we'll say that this is our Entrypoint.
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And then down here, we'll do our
normal if __name__ == __main__.
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And then we'll run main.
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We'll start with just a single entry point
which we'll run when the script is run
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directly.
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So first, I wanna get the path for
the project.
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Now, since I need to make sure that
the user gives me something like a path,
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it should really be an absolute path.
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I think I wanna bring in pathlib.
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I also think I'll do
this in a new function.
0:38
So let's first go up here and
do import pathlib.
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And then let's write a new
function called get_root.
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And we're gonna say root
= pathlib.PurePath.
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And then we'll say input,
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what's the full path where
you'd like the project?
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Let's come down here, and
we'll say if not root.is_absolute,
1:00
then we'll return get_root.
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Otherwise, we're going to return
the root that they gave us.
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Nothing's too tricky here.
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One thing you might not have seen before,
though,
1:15
is this way of returning
a new call to the function.
1:18
This is an easy way to just
reset the function and
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make the user do what you want them to do.
1:24
Okay, so let's go ahead and
assign that variable here in main.
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We'll say project_root = get_root.
1:32
Now, we could test this part, but let's
add one more thing first, a project name.
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Same idea, but I think I'll do
this one directly here in main,
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since it doesn't have
a whole lot of ways to fail.
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So I'll say project_name = None.
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And while there's not a project_name,
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project_name = input("What's
the full name for
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the project?") and
I want to call strip() on the end of that
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to make sure that there is no spaces or
anything like that.
2:02
All right, so
I think now we should test it.
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Let's add just a little bit right here.
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We'll just say,
print("Creating {} in {}") and
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then we'll format that with
project_name and project_root.
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All right, so
now we should be able to run this.
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So let's try doing python3 builder.py.
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What's the full path where
we'd like this project?
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Projects and
then file_systems and then demo.
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It doesn't like that.
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/Users/Kenneth/Projects/file_systems/de-
mo/.
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And the name for
this will be Demo Project.
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So it's gonna create a demo project in
/Users/Kenneth/Projects/file_systems/demo.
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So, cool.
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If I look here, just to make sure
I have the right path, I do.
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/Users/Kenneth/Projects/file_systems
great.
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So that's going to create that
in the path that I would like.
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Now, if we give it a bad
path like one from Windows,
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since I'm currently on a POSIX system,
I should get asked for a new one.
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And if I give it a good path and a project
name like we said, we'll get both back.
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So awesome.
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And just like that, we're on our
way to making a project generator.
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Something you want might add is asking for
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a user's full name and
maybe a license choice.
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I don't think I'm going to include
either of those, but they'd make for
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a more fully featured app.
3:33
In the next video, we'll start
creating the directories we'll need.
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We need to make sure we're not
stomping on any existing files,
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at least not without a warning.
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And we'll need to get some sort of file
system safe name for the project too.
3:41
Try and do those on your own if you want,
then come back for my approach.
3:43
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