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Tag: set

How are small sets stored in memory?

If we look at the resize behavior for sets under 50k elements: This pattern is consistent with quadrupling of the backing storage size once the set is 3/5ths full, plus some presumably constant overhead for the PySetObject: A similar pattern continues even for larger sets, but the resize factor switches to doubling instead of quadrupling. The reported size for small

Creating sets of specific extracted values from a .txt file (Python)

I have a .txt file that says “NAMES,” “POINTS” and “SUMMARY” in capital letters, each followed by lines containing data. Each of these three groups is separated by an empty line: My goal is to create three separate sets of names, points and summary. I already created a set of names using the following code (which outputs a set of

using set() with pandas

May I ask you please if we can use set() to read the data in a specific column in pandas? For example, I have the following output from a DataFrame df1: where the first column is the index.. I tried first to isolate the second column using the following: x = pd.DataFrame(df1, coulmn=[0]) Then, I transposed the column using the

build a set from 3 lists – Python

I’ve got below chunk and I need to define ‘Score’ as the intersection / union for each set of words in any given two lists. I understand & and | could only be used in sets. From studytonight I get that below code shoud work but it’s gving me > TypeError: unhashable type: ‘list’ Could someone please correct my mistake?

Which is faster, a set comprehension or set difference? [closed]

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. This question does not appear to be about programming within the scope defined in the help center. Closed 1 year ago. Improve this question I have two lists: I need to find the difference between the two lists. Do I use a set comprehension, or

What makes the difference by creating a set in this code?

Given a list of numbers and a number k, return whether any two numbers from the list add up to k. For example, given [10, 15, 3, 7] and k of 17, return true since 10 + 7 is 17. Bonus: Can you do this in one pass? I wrote my code like this and i got right answer for the above input And checked others code too to know