Recent questions tagged python

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python - Construct two dimensional numpy array from indices and values of a one dimensional array

Say I've got Y = np.array([2, 0, 1, 1]) From this I want to obtain a matrix X with shape (len(Y ... of indices As always, thanks for your time! 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 - Pandas combining sparse columns in dataframe

I am using Python, Pandas for data analysis. I have sparsely distributed data in different columns like following | ... do this in better 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 - SQLite not saving data between uses

I made a module with the following contents: import sqlite3 as sq connection = sq.connect("test.db") cursor = ... testing',)] What is 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 - Line buffered serial input

I have a serial device that I'm trying to read input from. I sent it a string "ID ", and it ... the "right" way with textiowrapper first. 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 set explicitly the terminal size when using pexpect

I have a ncurses app that checks terminal size at startup and exits immediately if it doesn't fit. In ... with pexpect explicitly at startup? 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: Input 0 of layer sequential is incompatible with the layer: : expected min_ndim=4, found ndim=2. Full shape received: [None, 2584]

I'm working in a project that isolate vocal parts from an audio. I'm using the DSD100 dataset, but for ... for the help provided 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 - Tkinter button expand using grid

I'm new to coding, just learning Python. I searched for answers but could not find one. I'm trying to make ... the borders of the root window? 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 produce an exponentially scaled axis?

Consider the following code: from numpy import log2 import matplotlib.pyplot as plt xdata = [log2(x)*(10/log2(10)) ... , feel free 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 - trouble getting cv.transform to work

I'd like to use the same affine matrix M on some individual (x,y) points as I use on images with cv2 ... what would the different rows signify? 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 - Confused about `is` operator with strings

The is operator compares the memory addresses of two objects, and returns True if they're the same. Why, ... the is operator not consistent? See Question&Answers more detail:os...

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

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356 views

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python - Trying to run KIVY, for the first time

I'm trying to run kivy for the first time. Im using a default program. from kivy.app import App from ... one has mentioned the right 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 - Multiprocessing program has AttributeError in Anaconda notebook

I am running a simple "Hello World" program on Windows 7 64 bit with the following specifications: Python 3.4. ... module '__main__' (built-in) 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 - Get first non-null value per row

I have a sample dataframe show as below. For each line, I want to check the c1 first, if it is not ... columns, this method looks not good. See Question&Answers more detail:os...

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

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331 views

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python - Why would django fail with server 500 only when Debug=False AND db is set to production database on Heroku?

When we run $ python manage.py runserver --settings=project.settings.local there are 4 ... whitenoise.django.GzipManifestStaticFilesStorage' 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 SQL WHERE clause generation

For the record, I'm using Python and SQLlite. I have a working function that generates the SQL I need, but ... be in the WHERE clause condition. See Question&Answers more detail:os...

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

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193 views

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python - Splitting a dataframe into separate CSV files

I have a fairly large csv, looking like this: +---------+---------+ | Column1 | Column2 | +- ... when splitting the files to remove the header. 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 - File system scheme '[local]' not implemented in Google Colab TPU

I am using TPU runtime in Google Colab, but having problems in reading files (not sure). I initialized TPU using ... other way to solve 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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252 views

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python - Numpy: find indeces of mask edges

I'm trying to find indeces of masked segments. For example: mask = [1, 0, 0, 1, 1, 1, 0, 0] segments = ... but it doesn't look like what i need. 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 fade the screen out and back in using PyGame?

So I am trying to fade my screen out and back in after completing a level using PyGame. My problem is that only ... 0, 0)) pg.display.update() 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 - Fill the outside of contours OpenCV

I am trying to color in black the outside region of a contours using openCV and python language. Here is my ... of the contours cnt please? ` See Question&Answers more detail:os...

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

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191 views

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python - Checking if a list contains a certain sequence of numbers

I have a list of 5 ints from 1 to 6 (simulating 5 dice rolling), randomly generated for example: L = [1, ... me. Any help 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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291 views

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python - Difference between Flask abort() or returning a status

What is the difference between abort(400) and returning a response with a 400 status? Is using return bad form ... "some error message"}, 400 See Question&Answers more detail:os...

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

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252 views

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python 2.7 - App Engine local datastore content does not persist

I'm running some basic test code, with web.py and GAE (Windows 7, Python27). The form enables messages to ... ... didn't install properly? See Question&Answers more detail:os...

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

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146 views

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python - What is the best way to Install Conda on MacOS (Apple/Mac)?

What is the recommended approach for installing Anaconda on Mac? I tried with brew cask install anaconda which ... install Conda on MacOS? See Question&Answers more detail:os...

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

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157 views

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python - store numpy array in mysql

My use case is simple, i have performed some kind of operation on image and the resulting feature vector is a ... data in the mysql database. 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 - Get next enumerator constant/property

Lets's say I have an enumerator, is it possible to get the property that follows? So if I had today=Days.Sunday ... Saturday = ('Sa','Sunday') See Question&Answers more detail:os...

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

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278 views

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python - replace all characters in a string with asterisks

I have a string name = "Ben" that I turn into a list word = list(name) I want to replace the ... solution that will work for any string. See Question&Answers more detail:os...

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

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229 views

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python - Verifying HTTPS certificates with urllib.request

I am trying to open an https URL using the urlopen method in Python 3's urllib.request module. It seems to work ... that my OS or browser uses? See Question&Answers more detail:os...

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

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