Recent questions tagged Python

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python - "error: Unable to find vcvarsall.bat" when compiling Cython code

As suggested here, I have succesfully installed Microsoft Visual C++ Compiler for Python 2.7 to compile some Cython ... py) didn't solve 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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382 views

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python - How to calculate the Cosine similarity between two tensors?

I have two normalized tensors and I need to calculate the cosine similarity between these tensors. How do I do it ... = tf.nn.l2_normalize(b,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 - How to read a MP3 audio file into a numpy array / save a numpy array to MP3?

Is there a way to read/write a MP3 audio file into/from a numpy array with a similar API to scipy.io. ... cover the multi channel case, etc. See Question&Answers more detail:os...

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

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203 views

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python - Vectorizing a function in pandas

I have a dataframe that contains a list of lat/lon coordinates: d = {'Provider ID': {0: ' ... loc[crit, first_hospital_coordinates] = distance 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 - Seaborn Heatmap Colorbar Label as Percentage

Given this heat map: import numpy as np; np.random.seed(0) import seaborn as sns; sns.set() uniform_data = ... the color bar? 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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302 views

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python - Scrapy: How to manually insert a request from a spider_idle event callback?

I've created a spider, and have linked a method to the spider_idle event. How do I add a request manually? I ... with no additional effort. >.> 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 - Build wheel for a package (like scipy) lacking dependency declaration

I think it doesn't make a difference here but I'm using Python 2.7. So the general part of my ... scipy wheel. Are there better options? 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 - pipe large amount of data to stdin while using subprocess.Popen

I'm kind of struggling to understand what is the python way of solving this simple problem. My problem is quite ... or an explicit fork? 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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591 views

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python - Django Heroku Error "Your models have changes that are not yet reflected in a migration"

I recently added a model to my app (UserProfile) and when I pushed the changes to Heroku, I think I accidentally ... I fix this? Please 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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519 views

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python - Find the area between two curves plotted in matplotlib (fill_between area)

I have a list of x and y values for two curves, both having weird shapes, and I don't have a function ... have to work with absolute numbers. See Question&Answers more detail:os...

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

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215 views

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python - Numpy histogram of large arrays

I have a bunch of csv datasets, about 10Gb in size each. I'd like to generate histograms from their ... someone already invented this wheel. 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 - Matplotlib: interactive plot on a web server

I'm currently using Open Flash Chart 2 on my django website, but I find it insufficiently customizable. (It's ... what can be achieved. 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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171 views

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python - How to serialize db.Model objects to json?

When using from django.utils import simplejson on objects of types that derive from db.Model it throws exceptions. How to circumvent 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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233 views

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python - django rest framework lookup_field through OneToOneField

https://gist.github.com/ranman/3d97ea9054c984bca75e Desired Behavior User lookup happens by the username: /api/users/ ... can take. 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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597 views

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python - Plotting shaded uncertainty region in line plot in matplotlib when data has NaNs

I would like a plot which looks like this: I am trying to do this with matplotlib: fig, ax = ... with their uncertainties for multiple series. See Question&Answers more detail:os...

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

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309 views

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python - Separate pandas dataframe using sklearn's KFold

I had obtained the index of training set and testing set with code below. df = pandas.read_pickle(filepath + ... the row indexes I retrieved. See Question&Answers more detail:os...

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

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196 views

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python - Construct NetworkX graph from Pandas DataFrame

I'd like to create some NetworkX graphs from a simple Pandas DataFrame: Loc 1 Loc 2 Loc 3 Loc 4 Loc 5 ... index and the nodes from the 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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492 views

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python - Edit distance such as Levenshtein taking into account proximity on keyboard

Is there an edit distance such as Levenshtein which takes into account distance for substitutions? For example, ... of promixity into account? 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 - Django widget template override does not search in the project template directory. How to fix?

I am attempting to override a built in widget template in Django 1.11. I seem to be doing everything that ... the widget override. 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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473 views

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python - explain arguments meaning in res = cv2.bitwise_and(img,img,mask = mask)

I am trying to extract blue colour of an input image. For that I create a blue HSV colour boundary and threshold ... me to find out the answer See Question&Answers more detail:os...

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

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257 views

1 answer

python - skew normal distribution in scipy

Does anyone know how to plot a skew normal distribution with scipy? I supose that stats.norm class can ... of a unidimensional dataset? See Question&Answers more detail:os...

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

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184 views

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python - Regular expression to match start of filename and filename extension

What is the regular expression to match strings (in this case, file names) that start with 'Run' and have a filename ... . LIKE 'Run%.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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201 views

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python - Difference between Django Form 'initial' and 'bound data'?

Given an example like this: class MyForm(forms.Form): name = forms.CharField() I'm trying to grasp what ... between these two styles is. See Question&Answers more detail:os...

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

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131 views

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python - Assigning a function to an object attribute

Based on my understanding of Python's data model, and specifically the subsection "Instance Methods", whenever you ... it makes any difference. See Question&Answers more detail:os...

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

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342 views

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python - Celery stop execution of a chain

I have a check_orders task that's executed periodically. It makes a group of tasks so that I can ... were 'successful' notify_user(args_sub_2) See Question&Answers more detail:os...

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

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113 views

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python - pandas: where is the documentation for TimeGrouper?

I use Pandas a lot and its great. I use TimeGrouper as well, and its great. I actually dont know where ... TimeGrouper. Is there any? 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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115 views

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python - Reference an Element in a List of Tuples

Sorry in advance, but I'm new to Python. I have a list of tuples, and I was wondering how I can ... would be greatly appreciated. Thanks, Turner See Question&Answers more detail:os...

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

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359 views

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python - Using adaptive step sizes with scipy.integrate.ode

The (brief) documentation for scipy.integrate.ode says that two methods (dopri5 and dop853) have stepsize control and ... useful in many cases. See Question&Answers more detail:os...

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

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