Recent questions tagged Python

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python - Choosing from different cost function and activation function of a neural network

Recently I started toying with neural networks. I was trying to implement an AND gate with Tensorflow. I am ... to a correct 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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python - Tensorflow : What is the relationship between .ckpt file and .ckpt.meta and .ckpt.index , and .pb file

I used saver=tf.train.Saver() to save the model that I trained, and I get three kinds of files named: .ckpt.meta ... I save model as a .pb 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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python - What are chunks, samples and frames when using pyaudio

After going through the documentation of pyaudio and reading some other articles on the web, I am confused if my ... many of them maybe wrong. 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 - Show training and validation accuracy in TensorFlow using same graph

I have a TensorFlow model, and one part of this model evaluates the accuracy. The accuracy is just another node ... How might this be possible? 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 can I hide the console window when freezing wxPython applications with cxFreeze?

I'm developing a Python application using wxPython and freezing it using cxFreeze. All seems to be going fine ... problems with Py2Exe. 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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313 views

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python - Using regex to remove comments from source files

I'm making a program to automate the writing of some C code, (I'm writing to parse strings into enumerations ... use // single line comments.) 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 - Django - exception handling best practice and sending customized error message

I am starting to think about appropriate exception handling in my Django app, and my goal is to make it as ... 'message':message}, status=500) 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 - Django - run a function every x seconds

I'm working on a Django app. I have an API endpoint, which if requested, must carry out a function that ... of this, criticism is 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 - Logging training and validation loss in tensorboard

I'm trying to learn how to use tensorflow and tensorboard. I have a test project based on the MNIST ... single node for different inputs? 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 - Django Rest Framework POST Update if existing or create

I am new to DRF. I read the API docs, maybe it is obvious but I couldn't find a handy way to do it ... filter_fields = ("question", "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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172 views

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python - What does [:, :] mean on NumPy arrays

Sorry for the stupid question. I'm programming on PHP but found some nice code on Python and want to "recreate" ... == "__main__": main() See Question&Answers more detail:os...

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

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313 views

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python - See when packages were installed / updated using pip

I know how to see installed Python packages using pip, just use pip freeze. But is there any way to see ... is installed or updated with pip? See Question&Answers more detail:os...

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

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557 views

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python - How do I properly use connection pools in redis?

It's not clear to me how connections pools work, and how to properly use them. I was hoping someone could ... our requests slowing down. 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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141 views

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python 2.7 - how to get return response from AWS Lambda function

I have a simple lambda function that returns a dict response and another lambda function invokes that function and prints ... of how 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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290 views

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python - Non-global middleware in Django

In Django there is a settings file that defines the middleware to be run on each request. This middleware ... different from the global set. See Question&Answers more detail:os...

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

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200 views

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python - List database tables with SQLAlchemy

I want to implement a function that gives information about all the tables (and their column names) that are present in ... on how 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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325 views

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python - why cv2.imwrite() changes the color of pics?

I have the following piece of code: imgs = glob.glob('/home/chipin/heart/tray.png') current_img = io. ... Here is the value of current_img: 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 - Replace string/value in entire DataFrame

I have a very large dataset were I want to replace strings with numbers. I would like to operate on the dataset ... =4, very good=5 //Jonas See Question&Answers more detail:os...

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

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217 views

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python - Why are arbitrary target expressions allowed in for-loops?

I accidentally wrote some code like this: foo = [42] k = {'c': 'd'} for k['z'] in foo: # Huh?? ... is actually useful, not just a weird gotcha? 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 is an intuitive explanation of np.unravel_index?

Pretty much what the title says. I've read the documentation and I've played with the function for ... manifestation of this transformation 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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156 views

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python - How to convert list of model objects to pandas dataframe?

I have an array of objects of this class class CancerDataEntity(Model): age = columns.Text(primary_key=True) ... processing the input array? See Question&Answers more detail:os...

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

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606 views

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python - Is there a parameter in matplotlib/pandas to have the Y axis of a histogram as percentage?

I would like to compare two histograms by having the Y axis show the percentage of each column from the ... using Pandas and matplotlib. 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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319 views

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python - PyDev unittesting: How to capture text logged to a logging.Logger in "Captured Output"

I am using PyDev for development and unit-testing of my Python application. As for unit-testing, everything works ... execution of this test? 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 - Make new column in Panda dataframe by adding values from other columns

I have a dataframe with values like A B 1 4 2 6 3 9 I need to add a new column by adding values from column ... can't figure out how 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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208 views

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python - Django setUpTestData() vs. setUp()

Django 1.8 shipped with a refactored TestCase which allows for data initialization at the class level using ... broad for Stack Overflow. 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 - django - comparing old and new field value before saving

I have a django model, and I need to compare old and new values of field BEFORE saving. I've tried the save ... of pre-save actions. Thank you! See Question&Answers more detail:os...

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

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264 views

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python - Pandas: Appending a row to a dataframe and specify its index label

Is there any way to specify the index that I want for a new row, when appending the row to a dataframe? The ... way to control the new label? 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 - Turn off axes in subplots

I have the following code: import matplotlib.pyplot as plt import matplotlib.image as mpimg import matplotlib. ... all subplots simultaneously? See Question&Answers more detail:os...

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

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