Recent questions tagged Python

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python - RaspiCam fisheye calibration with OpenCV

I am trying to calibrate RaspiCam Fisheye lens camera with OpenCV. I am using Python ... .com/mesutpiskin/0412c44bae399adf1f48007f22bdd22d 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 - Dynamic select field using WTForms not updating

I'm trying to make a dynamic select field using wtforms and sqlalchemy, but it doesn't update when ... you completely restart the application. See Question&Answers more detail:os...

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

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542 views

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python - Finding all divisors of a number optimization

I have written the following function which finds all divisors of a given natural number and returns them as a ... up to a certain boundary. 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 - Accessing the underlying struct of a PyObject

I am working on creating a python c extension but am having difficulty finding documentation on what I want to do ... /code to access my_point } 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 calculate cumulative sum using sqlContext

I know we can use Window function in pyspark to calculate cumulative sum. But Window is only supported in ... to fit into the memory 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 generate custom ID

I saw this answer but there is no specific answer yet. I want to create custom id that starts with ... (primary_key=True, editable=False) See Question&Answers more detail:os...

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

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294 views

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python - How do i create Confusion matrix of predicted and ground truth labels with Tensorflow?

I have implemented a Nueral Network model for a classification with the help of using TensorFlow. But, i don ... for representing my labels) 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 - Blurring in PyGame

I'm working on a short intro in PyGame, and I need to blur some static lines. After two days of searching ... , almost like a glowing effect. 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 - Change TCP Payload with nfqueue/scapy

Hello I am using nfqueue and scapy and I my goal is to recieve packets at my NFQUEUE, change the payload and ... way. Thank you 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 - Windows Subsystem for Linux (WSL 2) and Jupyter Lab : How to open a Jupyter Notebook saved at the Linux file system?

I have a Jupyter lab installed on Windows. I installed Jupyter Lab on WSL Ubuntu. I can lunch Jupyter Lab from ... is saved under "wsl$" ? See Question&Answers more detail:os...

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

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461 views

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python - convert csv to netcdf

I am trying to convert a .csv file to a netCDF4 via Python but I am having trouble figuring out how I ... could not convert string to float: 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 - pyqt5 tabwidget vertical tab horizontal text alignment left

Since pyqt doesn't have horizontal text in vertical tab option, I followed this link to make it ... .setTabPosition(QtWidgets.QTabWidget.West) 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 - Finding shapes in an image using opencv

I'm trying to look for shapes in an image using OpenCV. I know the shapes I want to match (there are ... still get detected by trivial methods). See Question&Answers more detail:os...

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

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304 views

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python - How to generate a predictable shuffling of a sequence without generating the whole sequence in advance?

The following python code describes exactly what I want to achieve for a sequence of arbitrary size (population): ... it out and they 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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513 views

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python - Scrapy multiple requests and fill single item

I need to make 2 request to different urls and put that information to the same item. I have tried this method, but ... , meta={'item': item}) See Question&Answers more detail:os...

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

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635 views

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python - How to send a message with discord.py without a command

import discord import asyncio client = discord.Client() @client.event async def on_ready(): print("I'm ready.") async ... you guys help me? :) 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 - try block inside while statement

I'm just starting out with Python 2.7 and I don't understand why something is happening: In the following code, ... top but why is it happening? 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 - Django FormWizard how to change the form_list dynamically

I'm able to dynamically call one form related to the data I chose from the step ealier. But when I'm ... += 1 return HttpResponseRedirect('/') See Question&Answers more detail:os...

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

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249 views

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python - Count number of cells in the image

I need code for counting the number of cells in the image and only the cells that are in pink color should ... also should be separated. output: See Question&Answers more detail:os...

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

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637 views

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python 3.x - Py4JJavaError: An error occurred while calling o26.parquet. (Reading Parquet file)

Trying to read a Parquet file in PySpark but getting Py4JJavaError. I even tried reading it from the spark-shell and was ... .6.5 PySpark 2.3.1 See Question&Answers more detail:os...

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

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473 views

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python - How can I use KNN /K-means to clustering time series in a dataframe

Suppose a dataframe which contains 1000 rows. Each row represents a time series. Then I built a DTW algorithm to ... all rows of the dataframe? 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 - Combine two dictionaries, concatenate string values?

Related: Is there any pythonic way to combine two dicts (adding values for keys that appear in both)? I'd like ... , Pythonic 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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223 views

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python - Reading in a text file in a set line range

Is it possible to read in from a text file a set line range for example from line 20 to 52? I am ... that specify a new line or something See Question&Answers more detail:os...

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

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531 views

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python - Solving inverse problems with PyMC

Suppose we're given a prior on X (e.g. X ~ Gaussian) and a forward operator y = f(x). Suppose ... The posterior is not converging to xtrue. See Question&Answers more detail:os...

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

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228 views

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python - Check if a string contains only given characters

I'm wondering if there is more elegant way to check if the string (str = 'abcccbbaabcbca') contains only 'a' ... else : print('wrong character') See Question&Answers more detail:os...

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

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441 views

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python - Library not loaded: @rpath/libmysqlclient.21.dylib Reason: image not found Django migrate error using mysqlclient DB driver and MySQL 8 with macOS

While changing to a MySQL database from the default SQLite one that Django uses by default, I ran into this ... look into that more. Thoughts? See Question&Answers more detail:os...

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

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590 views

1 answer

python - Spotipy: How to read more than 100 tracks from a playlist

I'm trying to pull all tracks in a certain playlist using the Spotipy library for python. The user_playlist_tracks ... but it returns an error. See Question&Answers more detail:os...

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

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365 views

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python - Selenium scraping with multiple urls

Following my previous question, i'm now trying to scrape multiple pages of a url (all the pages with games in ... from the stalled point again? See Question&Answers more detail:os...

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

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