A Python Shorthand for Swapping Two Variables
Skills:
Python for Data80%
Key Takeaways
Python's in-place value swapping feature using tuple syntax, demonstrated by swapping two variables without a temporary variable, and the classic way of using a temporary variable for swapping.
Full Transcript
heyit's dan with another reason why Python is great so today I want to show you pythons in place value swapping feature let's say we have these two variables you know a and B and we want to swap them so that the value of a is gonna be 42 and the value of B is gonna be 23 the classic way to do that is by using a temporary variable where we're gonna say okay we're going to store the value of a and then we're going to say okay AE equals to B and if override a and then we'll assign B to the temporary variable so it has the the previous value of a or kind of the original value of a and then we'll see that we've swapped these two variables okay actually in Python there is an easier way to do this which is really handy to know so in Python you can actually just say a B equals B a so you can use the tuple syntax to swap two variables so now when we check the value of a value P you'll see we'll have the original values again that we have in the beginning because you know we first swapped in with the temporary variable and then that we swapped them back with this trick and yeah this thing is really handy you you're probably not gonna you know have to use this all that often but when you do it that's kind of the pythonic way to swap the values of two variables and always handy for programming interviews and stuff so yeah maybe something to keep in mind
Original Description
Because Python is amazing it has an elegant shorthand syntax for swapping two variables without having to use a third temporary variable: a,b = b, a
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