New answers tagged python
1
vote
Resource reservation system
Unless you have a really good reason (you don't seem to), start_date and start_time should never be represented independently, ...
- 65.3k
2
votes
Minimization problem solving and its step limits
Determinism
If your various calls to randint are for some kind of Monte Carlo process, then fine; but it's crucially important that you have controllable state. You ...
- 65.3k
0
votes
Snake game using python and tkinter
Overview
The code layout is good, and you used meaningful names for classes,
functions and variables.
UX
It is not obvious what the user should do when the GUI opens up.
You should display some simple ...
- 6,082
3
votes
Determine the hyper-parameters of an Approximate Bayesian computation
what can I do to improve the speed of my algorithm?
You have an (impressive) seven-deep nested loop, where only one of the levels of the nested loop takes up to \$10^7\$ iterations. Taking a guess at ...
- 65.3k
2
votes
Python - How to efficiently bin multiple dependent variables to a common independent variable?
Don't use linspace, among other reasons because that doesn't return a useful dtype by default. Just use arange, and then you can ...
- 65.3k
2
votes
Connect 4 project for three players with Pygame graphics
UX
Add a title to the GUI to show that it is the Connect 4 game.
Also mention in the GUI that there are 3 players: red, yellow and green.
In addition to the GUI, the code prints a lot of output to the ...
- 6,082
2
votes
A simple word embedder only using jax
As @J_H pointed out in a comment, there is no more information other than your code to base these improvements upon. Thus, take it with a grain of salt.
Use Direct Embedding Lookups
Right now, your <...
- 10.4k
4
votes
Calculate optimal game upgrades, v2
Performance Improvements
Reduced Complexity for get_max_dollars
Currently this tries all possible dollars from max dollars down to 0, this is ...
- 10.4k
4
votes
Accepted
Using python to estimate the range of unstructured data
My results are very sensitive to the bin size
That's going to be difficult to escape. There are some automatic ways to estimate bin size; as an example for your input data and using ...
- 65.3k
2
votes
Accepted
Polynomial parsing using regular expressions in Python
problem name
Names strongly influence how we think about a problem.
I'm not happy with the one you chose.
Consider your \$-3t^2 + x\$ example.
Prefer to use ...
- 34.8k
3
votes
Median of two sorted arrays in Python
The previous answer addresses your main concern about complexity. This will address one of the now-deleted comments on the question regarding functionality.
Portability
The function that was posted ...
- 6,082
3
votes
Sampling distribution of the sample mean
I seek advice on how to improve the program's efficiency
You use Numpy already; use it (a lot) more.
as well as to improve the user interface
For any significantly long input, I don't think it's ...
- 65.3k
2
votes
Calculation of independence test statistic
Here are some performance improvements (new code appears 3-4x faster on the sample data). Focusing on numpy.
I think it's okay to sacrifice modularity for the sake of performance, although I'm not ...
- 1,519
2
votes
Iteratively Build a Summary Dataset in an Effective Way
I only know how to do so utilizing nested For loops
Replace that with Pandas calls.
Can I achieve this goal without consuming so much time?
Other than loop, group and index issues, your output ...
- 65.3k
6
votes
Accepted
Median of two sorted arrays in Python
mentioned that \$O(\log \min(n,m))\$ would be really outside of what I can understand with my current knowledge.
Nah!
It's really about the sizes \$n, m\$, rather than about the algorithm.
If one is ...
- 34.8k
3
votes
How to optimize code to take advantage of NumPy broadcasting when calculating pairwise correlation?
"Yes". Your OLD IMPLEMENTATION isn't that far off, but needs to be vectorised.
For these purpose I suggest dropping down to Numpy for the inside of the ...
- 65.3k
2
votes
I have a pytorch module that takes in some parameters and predicts the difference between one of it inputs and the target
computing a discarded result
Please don't write code like this:
def greet(name):
42
name + " is cool."
print(f"Hello {name}!")
Yes, ...
- 34.8k
2
votes
Accepted
JiraWatcher - A script that helps track the progress of testing versions
module-level actions
load_dotenv()
jira = Jira(
url=os.getenv('JIRA_URL'),
username=os.getenv('JIRA_USERNAME'),
password=os.getenv('JIRA_PASSWORD')
)
...
- 34.8k
2
votes
JiraWatcher - A script that helps track the progress of testing versions
Overview
You did a good job with:
Leveraging others code with the imports
Using meaningful names for classes, functions and variables.
Layout
Move the functions ...
- 6,082
2
votes
Finding the Euclidean distance between the vectors of matrix a, and vector b
Don't use math in a Numpy context.
You should vectorise your loop. You had figured this out in a now-deleted answer, where you also passed axis=1. However, in ...
- 65.3k
6
votes
Accepted
Phonebook (working with vCard file)
Documentation
You should add a docstring at the top of the code to:
Summarize its purpose
Emphasize it relies on an environment variable
State the format of the required input file with a reference ...
- 6,082
2
votes
Computing the angle between two vectors (vectorized) for small angles and with few copies
I want to do this with as few copies as possible
This should not be a concern while your function is incorrect (your "sign error"). But also: should this -
...
- 65.3k
4
votes
Philips Hue Light Controller
Unused code
This function was declared, but it does not seem to be used:
def light():
If it is not used, it should be deleted. If it is used, it should
have a ...
- 6,082
3
votes
Calculation of independence test statistic
Thank you for instrumenting the code.
I'm ignoring the initial code and will just focus on the instrumented one.
shadowing builtins
...
- 34.8k
4
votes
Compute damages and savings for motor insurance claims
I have created a simple dictionary comprehension code like this
I do not think that means what you think it means, because your code doesn't have any comprehensions at all. It has some ...
- 65.3k
3
votes
Animating Lissajous curves with Python and matplotlib's animation library
For demonstration purposes I disregard the .gif generation, and especially disregard Jupyter. Notebooks tend to produce a scope swamp. System parameters? Throw them in the swamp. Loops, matplotlib ...
- 65.3k
2
votes
Accepted
How to structure and write exchangable calculation models (in python3 modules)?
I don't understand the "interchangeable modules" question. I can't find a clear example in your code of two different approaches that are able to be substituted one for the other. I think ...
- 65.3k
5
votes
python: Create a histogram from multiple large JSon Files
Using mind-reading (and a stray comment from the OP), I can tell that this:
60*int(s[11:13]) + int(s[14:16])
is a string-formatted time. Because the OP is no ...
- 65.3k
3
votes
Vectorizing a working custom similarity function further using numpy
The comprehension statements are far too long and complicated and need to be broken up (but shouldn't exist at all).
The easy vectorisation pass involves replacing all of the comprehensions with ...
- 65.3k
2
votes
Accepted
Using arrays more effectively with numpy
Gosh, this took a very long time to research and write. Apparently this is an implementation of Computing complete Lyapunov functions for discrete-time dynamical systems. It's a nasty calculation.
...
- 65.3k
1
vote
Simple snake game in Python
UX
It is not obvious what the user should do when the GUI opens up.
You should display some simple instructions in the GUI, such as:
...
- 6,082
3
votes
Managing file paths in a python Data Science project
JSON usage
JSON was never developed as a human-readable config language. Yes, a lot of popular projects (esp. in JS ecosystem) decided to abuse it for such purposes, and it has bitten almost everyone ...
- 649
4
votes
Snake game from the viewpoint of the snake
UX
It is not obvious what the user should do when the GUI opens up.
You should display some simple instructions in the GUI, such as:
...
- 6,082
4
votes
Find maximum area of rectangles within a histogram
Implementation
It's not clear why you defined a class with no data members and only one function member. This would be much simpler as a plain function.
The various commented-out assignments to ...
- 81.7k
2
votes
Table tennis tournament scoreboard
Input validation
This assumes sets_player1 can not be equal to sets_player2:
...
- 6,082
4
votes
Accepted
Table tennis tournament scoreboard
It looks quite good. A few small things:
Since in parse_match you don't plan to handle the ValueError except by raising a more ...
- 1,576
1
vote
Taxicab distance from path specification (Advent of Code - Day 01)
We don't need loc_found as a variable; we can use duplicate_location for that, since it starts off as ...
- 81.7k
3
votes
Managing file paths in a python Data Science project
argparse
When I run the code without passing a command-line argument, it dies badly
with error messages. It would be better if it died with a helpful message
which clearly shows the intended usage.
...
- 6,082
3
votes
Mean, median and mode GUI
GUI
When I run the code, the Tk window is too narrow, and I can't see full
window title.
Also, it would be helpful to display some simple instructions for the user.
Input checking
When I enter a word ...
- 6,082
3
votes
N-D Kalman Filter in Python + Numpy
Ignore for the moment the cookbook and filterpy.kalman, and let's assume that your implementation is nominally numerically correct. You had already done one manual check to validate that this is ...
- 65.3k
5
votes
Python loading image into memory (numpy arrays) from database bytes field fast
matricies is not a word.
A crucial step in your pipeline, and one you have only implied, is the actual blob-loading from MongoDB. Let's assume that you use pymongo. ...
- 65.3k
3
votes
Wrangling and reading several xlsx files from sftp server and concatenating them into a single dataframe
I don't think that these aliases:
from datetime import datetime as dt, time as ti, timedelta as td
are well-advised; just use the full type names.
Though I can't ...
- 65.3k
2
votes
Accepted
Infinite 2d block world (2d minecraft) with chunk system, physics and slower loading
I have managed to fix the world.load_nearest_chunk method and now I get over 60 fps! This is how i did it:
1 - pregenerate the ...
- 121
5
votes
Infinite 2d block world (2d minecraft) with chunk system, physics and slower loading
A few things jump out:
Don't calculate the chunks lists. Based on the player's movements, you know which chunks might need to be loaded and which ones can be dropped. For example, if the player moves ...
- 10.2k
3
votes
Pandas calculation speed of stock beta on many dataframes
Whenever you write section delimiters like
...
- 65.3k
3
votes
Student report card management Python program
Move all of your code into functions.
This stage:
...
- 65.3k
3
votes
Argument Order To Determine Order Of Output (Python; `attrs`)
Attrs
You need to code your own __init__ function to be able to use **kwargs and get the argument order. Otherwise, attrs will ...
- 10.2k
3
votes
Pandas rolling evaluation
I don't think you should do this.
For your demonstrated AAPL just do something like
...
- 65.3k
4
votes
4
votes
ssh key install
Some suggestions to improve your code:
Unpacking
Instead of using indices to refer to the items in i, you can directly unpack them. This will make your code more ...
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