Recent questions tagged Python

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python - Multiprocessing or Multithreading?

I'm making a program for running simulations in Python, with a wxPython interface. In the program, you can ... have no idea. Please advise. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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177 views

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python - plot data from CSV file with matplotlib

I have a CSV file at e:dir1datafile.csv. It contains three columns and 10 heading and trailing lines need to be ... = ax1.legend() plt.show() See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Improve pandas (PyTables?) HDF5 table write performance

I've been using pandas for research now for about two months to great effect. With large numbers of medium-sized ... seems to beat his in all scenarios except for when indexi...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - flask application with background threads

I am creating a flask application, for one request I need to run some long running job which is not ... immediately send message in return? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - What is "metrics" in Keras?

It is not yet clear for me what metrics are (as given in the code below). What exactly are they evaluating? Why do ... , metrics=['mae', 'acc']) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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581 views

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python - Evaluate multiple scores on sklearn cross_val_score

I'm trying to evaluate multiple machine learning algorithms with sklearn for a couple of metrics (accuracy, recall, ... I measure all scores ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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270 views

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python - GridSearch for an estimator inside a OneVsRestClassifier

I want to perform GridSearchCV in a SVC model, but that uses the one-vs-all strategy. For the latter part, I ... get to the same result? Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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590 views

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python - Screen scraping: getting around "HTTP Error 403: request disallowed by robots.txt"

Is there a way to get around the following? httperror_seek_wrapper: HTTP Error 403: request disallowed by robots. ... hoping for a work-around See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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412 views

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python - Progress Bar while download file over http with Requests

I need to download a sizable (~200MB) file. I figured out how to download and save the file with here. It would ... in range(20): bar.update(i) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Parsing reStructuredText into HTML

I'm making a framework in which I let developers describe their package using reStructuredText. I want to ... parse reStructuredText into HTML? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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247 views

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python - difference between numpy dot() and inner()

What is the difference between import numpy as np np.dot(a,b) and import numpy as np np.inner(a,b) all ... output. Which one should I use? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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280 views

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python - Why can't I find any pywin32 documentation/resources

I cannot find pywin32 documentation or even a little synopsis of what the module is (I am aware its for ... or resources? Maybe some examples? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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271 views

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python - Drawing average line in histogram (matplotlib)

I am drawing a histogram using matplotlib in python, and would like to draw a line representing the average of the ... for the y-axis? thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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260 views

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python - Find all index position in list based on partial string inside item in list

mylist = ["aa123", "bb2322", "aa354", "cc332", "ab334", "333aa"] I need the index position of all items ... return the index positions: 0,2,5 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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462 views

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python - Check if all values in list are greater than a certain number

my_list1 = [30,34,56] my_list2 = [29,500,43] How to I check if all values in list are >= 30? my_list1 should work ... : x >= 30, my_list1)]) > 0 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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283 views

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python - How to load jinja template directly from filesystem

The jinja API document at pocoo.org states: The simplest way to configure Jinja2 to load templates for your application ... . How is this done? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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667 views

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python - Django: reverse accessors for foreign keys clashing

I have two Django models which inherit from a base class: - Request - Inquiry - Analysis Request has two ... this would be happening? Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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327 views

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python - What's the purpose of Django setting ‘SECRET_KEY’?

I did a few google searches and checked out the docs ( https://docs.djangoproject.com/en/dev/ref/settings/#secret ... / others knew what it was? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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177 views

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python - How to join a server?

I'm trying to setup a discord bot with python. I have a pre-existing discord server that I would like the bot ... and I already have a token. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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213 views

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python - The Pythonic way of organizing modules and packages

I come from a background where I normally create one file per class. I organize common classes under directories ... in a Python module? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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285 views

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python - How do I use url_for if my method has multiple route annotations?

So I have a method that is accessible by multiple routes: @app.route("/canonical/path/") @app.route("/alternate/ ... I will get the first route? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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172 views

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python - spark 2.1.0 session config settings (pyspark)

I am trying to overwrite the spark session/spark context default configs, but it is picking entire node/cluster ... --diver 10G code.py See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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181 views

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python - How to keep all my django applications in specific folder

I have a Django project, let's say "project1". Typical folder structure for applications is: /project1/ /app1/ ... manage.py settings.py urls.py See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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211 views

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python - How to create/customize your own scorer function in scikit-learn?

I am using Support Vector Regression as an estimator in GridSearchCV. But I want to change the error function: ... ? Thanks for your help! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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287 views

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python - Getting next element while cycling through a list

li = [0, 1, 2, 3] running = True while running: for elem in li: thiselem = elem nextelem = li[li.index( ... Is there a better way of doing this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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284 views

1 answer

python - What's the difference between Model.query and session.query(Model) in SQLAlchemy?

I'm a beginner in SQLAlchemy and found query can be done in 2 method: Approach 1: DBSession = ... there any difference between them? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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530 views

1 answer

python - How to add line based on slope and intercept in Matplotlib?

In R, there is a function called abline in which a line can be drawn on a plot based on the ... there such a function in Matplotlib? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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426 views

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python - PEP8 – import not at top of file with sys.path

Problem PEP8 has a rule about putting imports at the top of a file: Imports are always put at the top of the file, ... to add .. to the sys.path See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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