Recent questions tagged Python

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python - Report Lab can't handle hebrew (unicode)

I am trying to generate the pdf from following python programming but generated output doesn't display hebrew letters ... showPage() c.save() 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 should I do when <tr> has rowspan

If the row has rowspan element , how to make the row correspond to the table as in wikipedia page. from bs4 ... - i get table as follows - 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 - Process image to find external contour

I have hundreds of PNG images for which I have to generate corresponding B&W images that show the outer outline ... could be used from Python. 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 - Removing duplicates from a list of numPy arrays

I have an ordinary Python list that contains (multidimensional) numPy arrays, all of the same shape and ... remove duplicates efficiently here? 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 - Scrapy installed, but won't run from the command line

I'm trying to run a scraping program I wrote for in python using scrapy on an ubuntu machine. Scrapy is installed ... thoughts on how to fix it? 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 - Efficient string suffix detection

I am working with PySpark on a huge dataset, where I want to filter the data frame based on strings in another data ... 3.0 with Python 2.7.5. See Question&Answers more detail:os...

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

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python - How to embed terminal inside PyQt5 application without QProcess?

I have been struggling lately with embedding a terminal inside PyQt GUI app. Tried almost every search on Internet but ... a PyQt GUI T.I.A 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 - plot time of day vs date in matplotlib

I want to plot, in a specific few ways, dates on the x axis and time of day on the y axis, and then have ... 20 05:00:00' Thanks for any 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 3.x - sys:1: RuntimeWarning: coroutine was never awaited

I am trying to write a request handler to help me send request in async mode. It prompt when I close the python ... ()", is that wrong then? 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 - How to pipe binary data into numpy arrays without tmp storage?

There are several similar questions but none of them answers this simple question directly: How can i catch a ... both the answers' authors! See Question&Answers more detail:os...

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

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336 views

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python - Pandas Join on String Datatype

I am trying to join two pandas dataframes on an id field which is a string uuid. I get a Value error: ... (rk): 988 raise ValueError(msg) 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 - py2app TypeError: dyld_find() got an unexpected keyword argument 'loader'

I'm having difficulty building my app using py2app. I can build it in alias mode without issue using ... unexpected keyword argument 'loader' See Question&Answers more detail:os...

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

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661 views

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python - Flask session not persistent across requests in Flask app with Gunicorn on Heroku

I'm running a Flask application with Gunicorn as a web server. The whole project is deployed to Heroku. ... only storing integers in it. 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 - Running Flask from IPython raises SystemExit

I am trying to run my Flask application from IPython. However, it fails with a SystemExit error. from flask ... : 252 pass SystemExit: 1 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 - Add fields dynamically to WTForms form

I want to define a form class with fields based on a dict of name: label. I tried the following, which ... type=submit value=Register> </form> See Question&Answers more detail:os...

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

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2.7k views

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python - How to filter s3 objects by last modified date with Boto3

Is there a way to filter s3 objects by last modified date in boto3? I've constructed a large ... bucket_obj.key print bucket_obj.last_modified See Question&Answers more detail:os...

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

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502 views

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python - Pandas: query string where column name contains special characters

I am working with a data frame that has a structure something like the following: In[75]: df.head(2) Out ... simple problem. Thanks in advance. See Question&Answers more detail:os...

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

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544 views

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python - matplotlib prune tick labels

I am using GridSpec to plot two plots one below the other without a gap in between with gs = gridspec.GridSpec(3, ... ('prune.png') plt.close() See Question&Answers more detail:os...

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

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323 views

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python - Use blocks from included files for parent in jinja2

I'm not sure if what I want to do is possible: I'm trying to get a block in a parent template to ... content inside. How do I accomplish 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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python - How to bundle cx_oracle with Pyinstaller

My goal is to use Pyinstaller to bundle an exe file from a simple python script that uses Tkinter and cx_oracle to ... old link I found above. See Question&Answers more detail:os...

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

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685 views

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python opencv cv2 matchTemplate with transparency

OpenCV 3.0.0 added the ability to specify a mask while performing templateMatch. When I specify a mask I get ... know how to create the mask? 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 - How to limit traffic using multicast over localhost

I'm using multicast UDP over localhost to implement a loose collection of cooperative programs running on a single ... of each received packet? See Question&Answers more detail:os...

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

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352 views

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python - activation values for all nodes in a PyBrain network

I feel like this should be trivial, but I've struggled to find anything useful in the PyBrain documentation, ... layer's activation values. See Question&Answers more detail:os...

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

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389 views

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python - Why does select.select() work with disk files but not epoll()?

The following code essentially cats a file with select.select(): f = open('node.py') fd = f.fileno() ... loop thread that writes to sockets. See Question&Answers more detail:os...

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

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267 views

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python - How to use Subprocess in Windows

I am trying to save the result or function runcmd in the variable Result. Here is what I have tried: import ... could I do to fix 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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302 views

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python - Using pass on a non necessary else statement

Based on PEP8 documentation, I was not able to find any reference regarding if I should use pass for aesthetic ... " else: pass else: pass See Question&Answers more detail:os...

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

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483 views

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python - How to extract raw html from a Scrapy selector?

I'm extracting js data using response.xpath('//*')re_first() and later converting it to python native data. The ... s the easiest way around it? See Question&Answers more detail:os...

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

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534 views

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python - Creating a custom sys.stdout class?

What I'm trying to do is simply have the output of some terminal commands print out to a wx.TextCtrl widget ... fix this would be appreciated. See Question&Answers more detail:os...

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

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