Recent questions tagged Python

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python - Including missing combinations of values in a pandas groupby aggregation

Problem Including all possible values or combinations of values in the output of a pandas groupby aggregation. Example Example ... 2 5 c 2 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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954 views

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python - Issue with UTF-/ encoding on csv file for excel

EDIT: As suggested special chars are displayed correctly if I use notepad++ to open the csv file. They are displayed ... (r"C:est2.csv",headers) See Question&Answers more detail:os...

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

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277 views

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python - Pygraphviz / networkx set node level or layer

I have a dataset that represents a kind of genealogy tree. Each node has 2 parents (except first generation, ... represented on a circular way. See Question&Answers more detail:os...

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

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390 views

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python - ibpy: extract API responses for multiple contracts

I am interested in using ibpy with Interactive Brokers API to get real time tick data for a given universe of 100 ... .32 ask 111.44 All 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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351 views

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python - simple dask map_partitions example

I read the following SO thead and now am trying to understand it. Here is my example: import dask.dataframe ... **_extract_meta(kwargs, True)) See Question&Answers more detail:os...

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

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1.2k views

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python - how to preserve links when scraping a table with beautiful soup and pandas

Scraping a web to get a table, using Beautiful soup and Pandas. One of the columns got some urls. When I pass ... The URL at least. any hint? See Question&Answers more detail:os...

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

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662 views

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python - Check if the Main Thread is still alive from another thread

How can I check if the Main Thread is alive from another ( non-daemon, child ) thread? The child thread is a ... as a daemon) Using python 2.7 See Question&Answers more detail:os...

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

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python 3.x - How to handle different task intervals on a single Dag in airflow?

I have a single dag with multiple tasks with this simple structure that tasks A, B, and C can run at the ... this problem? 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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559 views

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python - how to rotate a 3D surface in matplotlib

I have written code to plot a 3D surface of a parabaloid in matplotlib. How would I rotate the figure so that the ... alpha = 0.5) 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 - Numpy elementwise product of 3d array

I have two 3d arrays A and B with shape (N, 2, 2) that I would like to multiply element-wise according to ... that's giving me an NxN matrix. 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 - mplot3d animation with transparent background

I want to generate some gifs with transparent background using matplotlib. I tried different options but I ... background using mplot3d? See Question&Answers more detail:os...

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

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579 views

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python 3.x - How to get Gdk window from xid?

I'm lost in version 3.. in python2+gdk2 is: #!/usr/bin/env python2 import gtk gtk.gdk.window_process_all_updates() ... it's the window I want? See Question&Answers more detail:os...

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

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913 views

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python - A QWidget like QTextEdit that wraps its height automatically to its contents?

I am creating a form with some QTextEdit widgets. The default height of the QTextEdit exceeds a single line of ... go about doing this? 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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806 views

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python - Django form/database error: value too long for type character varying(4)

I'm trying to save a stripe (the billing service) company id [around 200 characters or so] to my database in Django ... on and how I can 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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428 views

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python - Can access AppEngine SDK sites via local ip-address when localhost works just fine and a MacOSX

Can access AppEngine SDK sites via local ip-address when localhost works just fine and a MacOSX using the ... source will be required? See Question&Answers more detail:os...

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

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556 views

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python - update a figure made with imshow(), contour() and quiver()

I'd like to know whether one can update a contour done with contour(), a vector field done with quiver(), ... the vector field and contour plot. See Question&Answers more detail:os...

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

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487 views

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python - splitting list in chunks of balanced weight

I need an algorithm to split a list of values into such chunks, that sum of values in every chunk is ( ... Edit: number of chunks is defined 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 - QObject (QPlainTextEdit) & Multithreading issues

Im currently trying to learn Networking with Python asyncore and pyqt4. I coded a small server, which basically listens ... p/635612 (dead link) 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 - flask - NameError: name 'app' is not defined

I'm running Flask through thescript, below (run.py) #!flask/bin/python from app import app app.run( ... before_request(): g.user= current_user See Question&Answers more detail:os...

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

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631 views

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python - Sum a list of Pandas DataFrames

Is there a way to sum multiple pandas DataFrames using syntax similar to pd.concat([df1, df2, df3, df4]). ... df3 The result should look like: See Question&Answers more detail:os...

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

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460 views

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python - Install wxPython on Mac os Mavericks

I am on a Macbook Air, running Mavericks. Today I downloaded wxPython via their website, however, when I click ... to get around this, 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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921 views

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python - IOError: [Errno 22] invalid mode ('wb') or filename:

I keep getting the following error. IOError: [Errno 22] invalid mode ('wb') or filename: 'C:\Users\Viral ... end of the filename. Any ideas? See Question&Answers more detail:os...

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

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802 views

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python - How to keep ssh session not expired using paramiko?

I intend to run several commands on remote host using paramiko, but the ssh session closed after running a command. The ... chan 0] EOF sent (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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581 views

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python - how to upload and read csv file in django using csv.DictReader?

I am reading csv file through upload and trying to store all values in a list def upload(request): paramFile = ... to append all values in list1 See Question&Answers more detail:os...

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

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379 views

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python - Call python3 code from python2 code

I am designing a GUI using the wxPython toolkit, which means it's being written in python2. However, I want to ... my python3 code from the GUI? 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 - How to use template inheritance with Chameleon?

I am using latest Pyramid to build a web app. Somehow we have started using Chameleon as the template engine. I ... to find an easy solution. See Question&Answers more detail:os...

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

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410 views

1 answer

python - convert list of dicts to list

I have a list of fields in this form fields = [{'name':'count', 'label':'Count'},{'name':'type', 'label' ... python 2.7. 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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281 views

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python - Fit a curve to the boundary of a scatterplot

I'm trying to fit a curve to the boundary of a scatterplot. See this image for reference. I have accomplished ... a higher density of points?) See Question&Answers more detail:os...

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

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