Recent questions tagged Python

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python - How do you click on an element which is hidden using Selenium WebDriver?

I have a web application which I am automating using WebDriver and Python. The issue is that there is a menu ... they differ with my situation. 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-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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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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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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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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467 views

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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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330 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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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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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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python - Creating Probability/Frequency Axis Grid (Irregularly Spaced) with Matplotlib

I'm trying to create a frequency curve plot, and I'm having trouble manipulating the axis to get the plot ... this kind of axis formatting. 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 - Why is matplotlib plot produced from ipython notebook slightly different from terminal version?

I have a strange issue. Using IPython Notebook, I created a quite extensive script using pandas and matplotlib to ... reports ipython 0.13.1 See Question&Answers more detail:os...

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

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292 views

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python inserting and retrieving binary data into mysql

I'm using the MySQLdb package for interacting with MySQL. I'm having trouble getting the proper type conversions ... mysqlclient. Thanks Alot!@ See Question&Answers more detail:os...

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

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440 views

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python - Drop duplicates keeping the row with the highest value in another column

a = [['John', 'Mary', 'John'], [10,22,50]]) df1 = pd.DataFrame(a, columns=['Name', 'Count'] ... entries that seems like a terrible solution. :D See Question&Answers more detail:os...

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

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419 views

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python - Min-max normalisation of a NumPy array

I have the following numpy array: foo = np.array([[0.0, 10.0], [0.13216, 12.11837], [0.25379, 42.05027], [0. ... [ 0.25379 1 ] [ 0.30874 0.097]] 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 - TensorFlow - Read video frames from TFRecords file

TLDR; my question is on how to load compressed video frames from TFRecords. I am setting up a data ... TFRecord files 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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python - Overriding nested JSON encoding of inherited default supported objects like dict, list

I've set up some classes of my own that are subclassed from a dictionary to act like them. Yet when I want ... process by the 'default' method. See Question&Answers more detail:os...

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

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407 views

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python - delete U+200B zero-width space characters using sublime text 3

How can I make U+200B character or delete them in using sublime text 3. I found http://pastebin.com/ehWxNfMe but I am not sure how to use 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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361 views

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python 3.x - Keras (TensorFlow, CPU): Training Sequential models in loop eats memory

I am trying to train 1000x of Sequential models in a loop. In every loop my program leaks memory until I run out and ... .2.2) tensorflow(1.0.0) 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 - In Tensorflow, what is the difference between a Variable and a Tensor?

The Tensorflow documentation states that a Variable can be used any place a Tensor can be used, and they seem to ... I use one over the other? See Question&Answers more detail:os...

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

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338 views

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python - How to process GET Query String with Flask

How do I process a long GET request with Flask? Is is possible to get a dictionary all the params? Here is the ... ) else: return 'Hello World!' See Question&Answers more detail:os...

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

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