Python Memory Management and Tips Transcripts
Chapter: Python variables and memory
Lecture: Pass by value
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Let's look at that alternative example that we saw in C++,
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But now in Python. Remember what we did is we passed over the id
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We said these are integers and we're just gonna compare them directly.
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And here's the same code in Python,
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really The only difference is where the return value goes and whether it goes int
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p1_id or p1_id int.
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Right, this is the same basic code.
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And if you print out p1_id or p2_id,
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it's gonna look just like the same thing that we had in C++,
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but it's not the same thing.
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In Python, these are different than what we had in C++. In
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C++ they're just allocated as the program runs technically on the stack.
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They're not passed by value, all sorts of stuff like that.
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So we're going to see that,
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actually, these also live out in memory, they're
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dynamically allocated, they have to be cleaned up just like our person object was.
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So these are pointing out here in just the same way. In some sense,
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does Python a Pointers? Python has more pointers than almost every other language,
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right? Even things like numbers and integers or functions themselves or modules and source code
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all of those things are objects and pointers.
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Even when they operate as basic numbers, like we have here
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these are basic numbers that are allocated dynamically
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out in memory.