Effective PyCharm Transcripts
Chapter: Refactoring
Lecture: Refactoring introduction
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Hello again. I am so very excited about this chapter.
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Refactoring is one of my absolute favorite topics.
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Why? Because I see so many people start to write software and then they get
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frozen in place thinking oh well what if I'm doing it wrong And what if in
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the future we need this other feature or there's other ways to write this part of
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the program and they just get stuck when they spend so much time thinking and worrying
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about getting started. Instead of just getting started.
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And with refactoring we can make some progress,
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we'll learn a bunch more about the problem we're trying to solve and then we can
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apply refactories changes to our code that changed the structure or the architecture without actually
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changing the behavior. We can apply these refactoring to make it better.
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So instead of getting stuck with analysis,
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paralysis or worrying too much about how to get started.
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Just get started and apply what you learn in this chapter to keep you on track
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That's the way real software is built.
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So we're gonna see as we write our code,
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there'll be problems like there'll be a method that's 500 lines long.
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There'll be variables that have very poor names,
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methods that have poor names, methods that should be broken apart.
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Class hierarchies that contain the abstractions at the wrong level.
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All kinds of things that we can do to move code around automatically with PyCharm.
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Now I want to be super clear here.
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This is not some sort of advanced find and replace.
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Not at all that could find just duplicates of names.
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they don't actually have any relationships across our files and wreck our program.
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Know what this is, is PyCharm,
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loads up all the files in our project.
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It turns it into an abstract syntax tree where it understands the actual relationships between the
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symbols and code. And when you apply those changes those re factories,
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it's not based on names, it's based on how the code actually works.
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So it's really, really reliable and it truly understands what's going on.
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So fantastic tools in PyCharm for refactoring.
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I think it's such an important skill to master and to know about and the tools
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are great. So we're going to dive into it and see how to apply them
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to some examples in this chapter.