Recent questions tagged Python

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python - django.db.utils.OperationalError: (1071, 'Specified key was too long; max key length is 767 bytes')

My model: class Course(models.Model): language = models.ForeignKey(Language) name = models.CharField(max_length= ... length limit Django 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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python - ValueError: Number of labels is 1. Valid values are 2 to n_samples - 1 (inclusive) when using silhouette_score

I am trying to calculate silhouette score as I find the optimal number of clusters to create, but get an error ... "====") print(silhouette) 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: how to rotate an image for data augmentation?

In tensorflow, I would like to rotate an image from a random angle, for data augmentation. But I don't ... in the tf.image module. 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 the Scala case class equivalent in PySpark?

How would you go about employing and/or implementing a case class equivalent in PySpark? 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 - Decrypting Chromium cookies

I'm trying to use Chromium cookies in Python, because Chromium encrypts its cookies using AES (with CBC) I need ... help me figure this out? 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 - Avoid tensorflow print on standard error

anyone knows if there is a method to prevent tensorflow from polluting standard error with gpus' memory ... wanna avoid this printing. 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 list all Tensorflow variables a node depends on?

How can I list all Tensorflow variables/constants/placeholders a node depends on? Example 1 (addition of constants): import ... , 'b', 'input'] 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 - The `hue` parameter in Seaborn.relplot() skips an integer when given numerical data?

The hue parameter skips one integer. d = {'column1':[1,2,3,4,5], 'column2':[2,4,5,2,3], 'cluster':[0,1, ... 2.7 Seaborn 0.9.0 Ubuntu 16.04 LTS 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 - Does assignment with advanced indexing copy array data?

I am slowly trying to understand the difference between views and copys in numpy, as well as mutable vs. immutable ... this in a confusing way. 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 - Adobe Photoshop-style posterization and OpenCV

It seems Adobe Photoshop does posterization by quantizing each color channel separately, based on the number of ... strictly through NumPy? 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 - Computing cosine similarity between two tensors in Keras

I have been following a tutorial that shows how to make a word2vec model. This tutorial uses this piece of code: ... can I use in this case? 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 - Paramiko and exec_command - killing remote process?

I'm using Paramiko to tail -f a file on a remote server. Previously, we were running this via ssh -t, ... remote server is running Solaris 10. 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 - gi.repository Windows

I'm developing an app which has to be 100% compatible on windows and on linux. On linux I have no problems, but ... , gtk.. what am I missing? 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 - Use numba to speed up for loop

From what I've read, numba can significantly speed up a python program. Could my program's time efficiency ... inner_sum * dk print outer_sum 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 the number of active threads started by specific class?

code looks like below: class workers1(Thread): def __init__(self): Thread.__init__(self) def run(self): # ... active by originating class ? 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 - multiprocessing problem [pyqt, py2exe]

I am writing a GUI program using PyQt4. There is a button in my main window and by clicking this button. I ... how to fix this problem? 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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python - How to pass a parameter to only one part of a pipeline object in scikit learn?

I need to pass a parameter, sample_weight, to my RandomForestClassifier like so: X = np.array([[2.0, 2.0, 1. ... with I run "fit"? 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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python - Opencv imshow() freezes when updating

For my image processing algorithm I'm using python / OpenCV. The output of my algorithm shall be updated ... there is no preceding invocation) 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 - Paramiko SSH exec_command (shell script) returns before completion

I launch a shell script from a remote Linux machine using Paramiko. The shell script is launched and execute ... explain me 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 - How can I correct the error ' AttributeError: 'dict_keys' object has no attribute 'remove' '?

I was trying shortest path finder using dijkstra algorithm but It seems not working. Can't figure out what the ... has no attribute 'remove' 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 - Passthrough is not supported, GL is disabled

I tried crawling a specific site using selenium and webdriver_manager.chrome, and my code crawled elements of that ... 't solve the problem. 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 for increment inner loop

How to increment the outer iterator from the inner loop? To be more precise: for i in range(0,6): print i for j ... .length -1) i=i+str2.length; 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 - Skip unittest if some-condition in SetUpClass fails

I was playing with pyUnit framework for unittest testing of my application. Is there any any way to skip all the ... skip the whole test suite. 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 change the range of the x-axis and y-axis in matlibplot?

I am new to matlibplot and I'm trying to draw a circle with radius 1 but have both my x and y axis ... would be brilliant! 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 - Convert a dictionary to a pandas dataframe

I'm trying to convert a dictionary that only has 1 record to a pandas dataframe. I've used the ... DataFrame constructor not properly called! See Question&Answers more detail:os...

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

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251 views

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python - Track download progress of S3 file using boto3 and callbacks

I am trying to download a text file from S3 using boto3. Here is what I have written. class ProgressPercentage( ... correction I need to make? 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 update rows in a CSV file

Hello I'm trying to make a program that updates the values in a csv. The user searches for the ID, and if ... ideas on how to get through 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 - Numpy: 1D array with various shape

I try to understand how to handle a 1D array (vector in linear algebra) with NumPy. In the following example, I generate two ... [ 6., 6., 6.]]) See Question&Answers more detail:os...

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

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