Python extract items from tuple
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View Discussion Show Improve Article Save Article View Discussion Improve Article Save Article Python Tuples In python tuples are used to store immutable objects. Python Tuples are very similar to lists except to some situations. Python tuples are immutable means that they can not be modified in whole program. Packing and Unpacking a Tuple: In Python, there is a very powerful tuple assignment feature that assigns the right-hand side of values into the left-hand side. In another way, it is called unpacking of a tuple of values into a variable. In packing, we put values into a new tuple while in unpacking we extract those values into a single variable. Example 1 Python3
Output: MNNIT Allahabad 5000 Engineering NOTE : In unpacking of tuple number of variables on left-hand side should be equal to number of values in
given tuple a. Example 2 Python3
Output: 10 ['Geeks ', ' for ', 'Geeks '] 50 10 Geeks [' for ', 'Geeks ', 50] In python tuples can be unpacked using a function in function tuple is passed and in function values are unpacked into normal variable. Consider the following code for better understanding. Example 3 : Python3
I have a tuple Is it more correct to use or The only things I can think of are different behaviour if asked Feb 25, 2011 at 20:02
2 I've been using Even with only one variable, the other way forces humans readers to count if they want to truly understand the code, and more likely their eyes are just going to pass over it. With the underscores, you can leverage the human brain's pattern matching abilities a little better. Probably a small thing, but every little bit helps when you're debugging. :) answered Feb 25, 2011 at 20:09
tangentstormtangentstorm 7,1132 gold badges27 silver badges38 bronze badges I think the usual way of doing it Using But at the end of the day I think it is just a matter of subjective preference. Use whatever that looks more readable to you and your team. answered Feb 25, 2011 at 20:10
MAKMAK 25.5k10 gold badges53 silver badges85 bronze badges Both are acceptable, and I've seen both in production code. I think the choice upon the context, the intent, and the local style. There is also a third option where the code describes the unused value:
I use all three within my code depending upon which is clearest:
answered Feb 25, 2011 at 20:49
1 If this is a return value from a function or method, another alternative is to write a wrapper function (or subclass the class and add a method) that returns just the item you're interested in, and calling that instead. answered Feb 25, 2011 at 23:23
kindallkindall 172k34 gold badges268 silver badges300 bronze badges Another possibility is to create a named tuple and use that in your return value. Then you can access the value you want by "name." Then you can make into and then say instead of Performance-wise, this may not be the best. But I think it can sometimes make writing and understanding the code easier. And it is an alternative to some of the other solutions. answered Dec 20, 2020 at 16:35
Gary02127Gary02127 4,7811 gold badge23 silver badges28 bronze badges 1st case: foo needs two variable to 2nd case: gives you answered Feb 25, 2011 at 20:21
TauquirTauquir 6,3635 gold badges35 silver badges48 bronze badges How do I extract data from a tuple in Python?In python tuples can be unpacked using a function in function tuple is passed and in function values are unpacked into normal variable.
How do you extract a tuple list?If it is required to extract the rear element from a list of tuples, it can be done using list comprehension and negative indexing. The list comprehension is a shorthand to iterate through the list and perform operations on it.
How do you split a tuple object in Python?To split a tuple, just list the variable names separated by commas on the left-hand side of an equals sign, and then a tuple on the right-hand side.
How do you get the second element from a tuple?If you need to get the second element from a list of tuples, use a list comprehension. Copied! We used a list comprehension to get a new list that contains the second element of each tuple. List comprehensions are used to perform some operation for every element, or select a subset of elements that meet a condition.
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