Recent questions tagged Python

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python - Flask-WTF / WTForms with Unittest fails validation, but works without Unittest

When I run app normally and do login in browser, it works. But with Unittest it won't log me in .... ... -> if form.validate_on_submit(): (Pdb) 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 - Tkinter Hovering over Button -> Color change

Is there a possibility to change the background-color of a Button after hovering on it? What is the code for this in Tkinter? See Question&Answers more detail:os...

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

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699 views

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python - Using numpy to efficiently convert 16-bit image data to 8 bit for display, with intensity scaling

I frequently convert 16-bit grayscale image data to 8-bit image data for display. It's almost always ... numpy.uint8) print(display_this_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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python - AttributeError: module 'tensorflow' has no attribute 'compat' when loading tf.compat.v1.train.SessionRunHook

I can see that this question has been asked before here tensorflow-has-no-attribute-compat but the answer given ... has no attribute 'compat' 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 - Sentence similarity using keras

I'm trying to implement sentence similarity architecture based on this work using the STS dataset. Labels are ... )([processed_a, processed_b]) 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 with parse function in lxml

i have installed lxml2.2.2 on windows platform(i m using python version 2.6.5).i tried this simple command: ... error. 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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python - Deploying existing Django app on Heroku

Following the Heroku tutorial but I have already created a rather complex Django app that I want to upload. I ... 't Heroku recognize the app? 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 - Replacing the empty strings in a string

I accidentally found that in python, an operation of the form string1.join(string2) Can be equivalently expressed as ... -defined thing to do? 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 compute "EMD" for 2 numpy arrays i.e "histogram" using opencv?

Since I'm new to opencv, I don't know how to use the cv.CalcEMD2 function with numpy arrays. I have ... ,This answer needs more testing. 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 - Apply styles while exporting to 'xlsx' in pandas with XlsxWriter

I use the .to_excel method of pandas to write a DataFrame as an Excel workbook. This works nice even for multi-index ... there any way to do so? See Question&Answers more detail:os...

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

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324 views

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python - How to parse table with rowspan and colspan

First, I have read Parsing a table with rowspan and colspan. I even answered the question. Please read before you ... the table is also fine. See Question&Answers more detail:os...

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

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284 views

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python - Iterate through class members in order of their declaration

I got this problem writing a little GUI lib that maps classes to simple table views. Every class member ... OrderedDict() of columns? 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 conditions result in an opened, nonblocking named pipe (fifo) being "unavailable" for reads?

Situation: new_pipe = os.open(pipe_path, os.O_RDONLY | os.O_NONBLOCK) # pipe_path points to a FIFO data = os.read( ... , that data will be read. See Question&Answers more detail:os...

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

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451 views

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python - 404 Response when running FlaskClient test method

I'm baffled by this. I'm using an application factory in a Flask application and under the test configuration my ... an example of how it fails See Question&Answers more detail:os...

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

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398 views

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python - Numpy Routine for Computing Matrix Minors?

I'm interested in using numpy to compute all of the minors of a given square matrix. Is there a slick ... changed coefficient and its minor.) See Question&Answers more detail:os...

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

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348 views

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python - Calculate correlation between all columns of a DataFrame and all columns of another DataFrame?

I have a DataFrame object stocks filled with stock returns. I have another DataFrame object industries filled with industry ... way to do 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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336 views

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python - Django filter many to many field in admin?

I have three objects: Thing some fields Bucket things = models.ManyToManyField(Thing) User buckets = models. ... your help 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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332 views

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python - How to avoid slack command timeout error?

I am working with slack command (python code is running behind this), it works fine, but this gives error This slash ... ). How to avoid 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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305 views

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python - module 'matplotlib' has no attribute 'verbose'

I can run my program in the terminal, but when I run it directly using Pycharm, it gives AttributeError: module ... ' has no attribute 'verbose' 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 save some arrays at once

I working on different shapes of arrays and I want to save them all with numpy.save, so, consider I have mat1 = ... as mat1 and mat2 at once. See Question&Answers more detail:os...

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

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360 views

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python - ElasticSearch updates are not immediate, how do you wait for ElasticSearch to finish updating it's index?

I'm attempting to improve performance on a suite that tests against ElasticSearch. The tests take a long time ... finish updating it's index? See Question&Answers more detail:os...

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

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274 views

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python - Force child class to call parent method when overriding it

I am curious whether there is a way in Python to force (from the Parent class) for a parent method to be ... , what would be an alternative? See Question&Answers more detail:os...

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

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430 views

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python - Is there a way to hide the csrf label while looping through form using Flask and Flask-WTForms?

I have very simple contact form and I would like to hide the label somehow so that it doesn't show Csrf Token. I ... field.label }} {% endif %} See Question&Answers more detail:os...

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

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298 views

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python - Modify list and dictionary during iteration, why does it fail on dict?

Let's consider this code which iterates over a list while removing an item each iteration: x = list(range(5 ... good reason for this behaviour? 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 - Debugging Numpy VisibleDeprecationWarning (ndarray from ragged nested sequences)

Since NumPy version 19.0, one must specify dtype=object when creating an array from "ragged" sequences. ... .cp38-win_amd64.pyd). See Question&Answers more detail:os...

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

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601 views

1 answer

python - Matplotlib 3D Scatter Plot with Colorbar

Borrowing from the example on the Matplotlib documentation page and slightly modifying the code, import numpy as np from ... 't seem to 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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261 views

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python - Fastest way to generate delimited string from 1d numpy array

I have a program which needs to turn many large one-dimensional numpy arrays of floats into delimited strings. ... of numbers to strings. See Question&Answers more detail:os...

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

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330 views

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python - How to convert Spark RDD to pandas dataframe in ipython?

I have a RDD and I want to convert it to pandas dataframe. I know that to convert and RDD to a normal dataframe ... dataframe. How can I 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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