Recent questions tagged Python

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There have been quite a few posts on handling the lognorm distribution with Scipy but i still dont get the hang of ... =30,normed=True,alpha=.3) 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 - Seaborn Correlation Coefficient on PairGrid

Is there a matplotlib or seaborn plot I could use with g.map_lower or g.map_upper to get the correlation ... which is a tedious process. 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's the difference between __iter__ and __getitem__?

This happens in Python 2.7.6 and 3.3.3 for me. When I define a class like this class foo: def __getitem__(self ... 7 None 8 None 9 None 10 None 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 - seaborn heatmap using pandas dataframe

I am struggling to massage a dataframe in pandas into the correct format for seaborn's heatmap (or matplotlib ... m missing something, clearly. 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 get word vectors from Keras Embedding Layer

I'm currently working with a Keras model which has a embedding layer as first layer. In order to visualize the ... there any way to do 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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302 views

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python - How do I change the color of my widget in Kivy at run time?

I'm having trouble changing the color of a simple widget in Kivy. I can set the color when I create the ... that I'm missing something obvious! 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 - Counting the business days between two series

Is there a better way than bdate_range() to measure business days between two columns of dates via pandas? df = pd. ... -03 00:00:00 0 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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618 views

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python - Efficiently Read last 'n' rows of CSV into DataFrame

A few methods to do this: Read the entire CSV and then use df.tail Somehow reverse the file (whats the best ... last n row of pandas dataframe? 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 kill a child thread with Ctrl+C?

I would like to stop the execution of a process with Ctrl+C in Python. But I have read somewhere that ... pass # do the actual work See Question&Answers more detail:os...

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

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381 views

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python - How to implement login required decorator in Flask

I have 2 Flask apps (different projects) that work together . One implements some API which uses tokens for ... store sessions if that matters. See Question&Answers more detail:os...

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

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300 views

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python - Command for clicking on the items of a Tkinter Treeview widget?

I'm creating a GUI with Tkinter, and a major part of the GUI is two Treeview objects. I need the ... and execute that command "on_click"? See Question&Answers more detail:os...

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

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424 views

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python - All minimum spanning trees implementation

I've been looking for an implementation (I'm using networkx library.) that will find all the minimum ... an implementation in any language! 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 - Concatenating column vectors using numpy arrays

I'd like to concatenate 'column' vectors using numpy arrays but because numpy sees all arrays as row vectors by ... ## Are there better ways? See Question&Answers more detail:os...

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

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409 views

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python - Resource 'corpora/wordnet' not found on Heroku

I'm trying to get NLTK and wordnet working on Heroku. I've already done heroku run python nltk.download() wordnet ... not sure what's going on. See Question&Answers more detail:os...

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

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174 views

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python - Fastest approach to read thousands of images into one big numpy array

I'm trying to find the fastest approach to read a bunch of images from a directory into a numpy array. My ... scikit-image.io module is faster. 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 - Add n tasks to celery queue and wait for the results

I would add multiple tasks to celery queue and wait for results. I have various ideas how I would achieve ... a) return c.all_results_some_how() See Question&Answers more detail:os...

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

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399 views

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python - os.system to invoke an exe which lies in a dir whose name contains whitespace

My code is simply as follows: file = 'C:\Exe\First Version\filename.exe' os.system(file) When I run ... as an argument into another function? See Question&Answers more detail:os...

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

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294 views

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python - Deploying CherryPy (daemon)

I've followed the basic CherryPy tutorial (http://www.cherrypy.org/wiki/CherryPyTutorial). One thing not discussed is ... d/cherrypy...) 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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125 views

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python - virtualenv does not include pip

I am trying to create a virtual environment using virtualenv on Mac OS X El Capitan. I have installed ... more thorough cleaning is needed. See Question&Answers more detail:os...

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

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361 views

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python - filter/select rows of pandas dataframe by timestamp column

I am new to pandas. I have dataframe with two columns dt (date-time stamp) and value. Given two start and end data ... 203 7/23/2014 16:55 0.192 See Question&Answers more detail:os...

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

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486 views

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python - Pandas read_csv expects wrong number of columns, with ragged csv file

I have a csv file that has a few hundred rows and 26 columns, but the last few columns only have a value in a ... 23 columns, got 26 in row 64 See Question&Answers more detail:os...

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

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1.7k views

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python - TypeError: first argument must be an iterable of pandas objects, you passed an object of type "DataFrame"

I have a big dataframe and I try to split that and after concat that. I use df2 = pd.read_csv('et_users.csv' ... "DataFrame" How can I fix that? See Question&Answers more detail:os...

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

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189 views

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python - MongoDB return True if document exists

I want to return true if a userID already exists and false otherwise from my collection.I have this function but ... a user id already exists? See Question&Answers more detail:os...

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

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468 views

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python - pandas: convert datetime to end-of-month

I have written a function to convert pandas datetime dates to month-end: import pandas import numpy import ... datetime.strptime(x, fmt) See Question&Answers more detail:os...

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

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201 views

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python - 'collectstatic' command fails when WhiteNoise is enabled

I'm trying to serve static files through WhiteNoise as per Heroku's recommendation. When I run collectstatic ... processing one specific file. 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 automatically reload Django when files change?

How to automatically monitor .py, .js and other source code files to restart a Django (or any other ... incomplete discussions here and there. See Question&Answers more detail:os...

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

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700 views

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python 3.x - In Bokeh, how do I add tooltips to a Timeseries chart (hover tool)?

Is it possible to add Tooltips to a Timeseries chart? In the simplified code example below, I want to see a single column ... , "$y"), ] show(p) 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: How to pre-populate FormView with dynamic (non-model) data?

I have a FormView view, with some additional GET context supplied using get_context_data(): class SignUpView(FormView ... situation per 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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