Recent questions tagged Python

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python - Sum over rows in scipy.sparse.csr_matrix

I have a big csr_matrix and I want to add over rows and obtain a new csr_matrix with the same number of ... missing? Thank you 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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python - Can I use numpy to speed this loop?

Good evening, I am trying to speed up the loop in this code. I have read through the numpy docs but to ... 10 times faster! Very impressive! 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 - Error while drawing animation of seaborn heatmap for 3D volume

Trying to visualize the cross-correlation between two volumes, img_3D, and mask_3D, using Seaborn heatmap, and animation ... =True) 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 - ImportError: No module named data_utils

I'm extremely new to python and I'm recently trying to understand more about Machine Learning and Neural Nets I ... the tutorial in this video. 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 - draw a window inside another

I wanted to ask if it is possible to draw a child window inside a parent window so that it will only be ... out of the parent window bounds. 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 - Embedding a terminal in PyQt5

So I've been trying to create my own terminal but that has been proven very glitchy and not professional looking ... same project/file, even. 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 - Why does my function not return value to global variable?

Why does print(squared) return 0 instead of 100? I thought that after being returned from the function - the ... (10) print(squared) returns: 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 - Combine a folder of text files into a CSV with each content in a cell

I have a folder containing several thousand .txt files. I'd like to combine them in a big .csv according ... /s/rj4df94hqisod5z/Texts.zip?dl=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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python - PyQt connect inside for loop vs. separate calls results in different behavior

I'm building a plotting UI that lets a user generate multiple plots from loaded data sets. As part of this the ... issue is with the above code. 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 - Checking a url for a 404 error scrapy

I'm going through a set of pages and I'm not certain how many there are, but the current page is represented ... += 1 else: stillExists = False See Question&Answers more detail:os...

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

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328 views

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python - Does range() not evaluate its argument every time?

l is passed as an argument to range function whose value is modified inside for loop, but the loop is going ... something else is the reason? See Question&Answers more detail:os...

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

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282 views

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python - Numpy advanced selection not working

Can someone please help me to understand why sometimes the advanced selection doesn't work and what I can do to get ... 0.04293139, 0.0861578 ], 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 3.x - Importing csv using pd.read_csv - invalid start byte error

I'm trying to import a csv file using: data = pd.read_csv("filename.csv") I get the following error: " ... import this issue is just skipped. See Question&Answers more detail:os...

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

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198 views

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python - List assignment to other list

Is there a reason that assigning a list to another list and changing an item in one reflects the change in both, ... agent #this prints [0,0,7] See Question&Answers more detail:os...

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

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392 views

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python - How to see the output in pexpect?

I have write this program: [mik@mikypc ~]$ cat ftp.py #!/usr/bin/env python # This connects to the rediris ftp ... How could I see the output?. See Question&Answers more detail:os...

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

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344 views

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python - What determines start up time of dynamic instance and can it vary between weeks if code is same

We are facing strange issue in our application, where we are getting error as:- Request was aborted after ... now we are receiving timeout. See Question&Answers more detail:os...

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

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331 views

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python - Strange behavior of numpy.round

Python's round() seems to always round up when faced with x.5 numbers: print round(1.5),round(2.5),round(3 ... a bug or am I missing something? See Question&Answers more detail:os...

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

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528 views

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python - How can I insert Monospace fonts into an image with opencv?

Currently, I am able to insert some texts of HERSHEY font into images with openCV API (putText). But it seems ... -pitch texts into the image. See Question&Answers more detail:os...

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

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240 views

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python - Django template - Is there a built-in way to get current date as type 'date' instead of type 'str'?

I know I can get the current date as a str in a Django template (using the template tag now), like this: ... date (or datetime) in the template? 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 - scipy.integrate.quad precision on big numbers

I try to compute such an integral (actually cdf of exponential distribution with its pdf) via scipy. ... integrating other density functions? 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 - PEP 484: exclusive type for type hint

Could I specify exclusive type? Something like this: def foo(bar: Not[str]) -> None: assert not isinstance(bar, str) print(type(bar)) See Question&Answers more detail:os...

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

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314 views

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python - Style active navigation element with a Flask/Jinja2 macro

I am using Flask/Jinja2 and Bootstrap 3. I'd like to add class="active" to the current navigation element. ... ? Because, it shows nothing . See Question&Answers more detail:os...

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

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248 views

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python - Reversing the order of values in a single column of a Dataframe

I was just wondering how to reverse the order of the values only in the Column Date in the dataframe df below, so ... 2015-06-15 1 0.3581 TSD See Question&Answers more detail:os...

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

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372 views

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python - Django slice a single field in a queryset

I am trying to grab the first five characters from a char field but for only one field in a queryset but I keep ... 'field2'[:5], 'field3') See Question&Answers more detail:os...

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

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510 views

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python - Celery is rerunning long running completed tasks over and over

I've a python celery-redis queue processing uploads and downloads worth gigs and gigs of data at a time. ... are extremely long running tasks. See Question&Answers more detail:os...

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

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443 views

1 answer

python - Explode lists with different lengths in Pandas

I've got a pandas dataframe in which one of the columns contains lists with different lengths. The solutions ... anybody got any suggestions? See Question&Answers more detail:os...

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

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536 views

1 answer

python - How can I specify a loss function to be quadratic weighted kappa in Keras?

My understanding is that keras requires loss functions to have the signature: def custom_loss(y_true, y_pred): I am ... to pass this through? See Question&Answers more detail:os...

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

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432 views

1 answer

python - How can I add interpreter to PyCharm?

When I try to run code in editor,it says that there is no available interpreters.Please,help.How can I solve the problem? See Question&Answers more detail:os...

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

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