Recent questions tagged Python

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python - What is the regex to match the words containing all the vowels?

I am learning regex in python but can't seem to get the hang of it. I am trying the filter out all the ... regex for the problem that I have? 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 is a unique constraint across three columns defined?

The following EventInvitation model is a simple invitation for one event, sent from a user to another user. ... define this unique constraint? 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 should I handle duplicate filenames when uploading a file with Flask

I recently came across this question and answer https://stackoverflow.com/a/44926557/12322095 regarding Flask file ... how to implement 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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python - SQLAlchemy - Cannot evaluate BinaryExpression with operator

I am trying to update some records in the table using the following code: session.query(Post).filter( ... what the use of synchronize_session? 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 3.x - Pandas DataFrame export to_csv change dtype of columns

Hopefully a simple request. I'm finding that when I build a DataFrame and set the column datatypes and then export ... "Test.csv", index=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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python - numpy.mean on varying row size

The numpy mean function works perfectly fine when the dimensions are the same. a = np.array([[1, 2], [3, ... seeing that it should 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 - Find file in directory with the highest number in the filename

My question is closely related to Python identify file with largest number as part of filename I want to append ... ".txt" after the number 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 - drop first and last row from within each group

This is a follow up question to get first and last values in a groupby How do I drop first and last rows ... rows, all rows should be dropped. 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 split a numpy array based on a column?

I have an array of the form : [[ 1. , 2., 3., 1., 3., 3., 4. ], [ 1.3, 2.3, 3.3, 3., 3.3, 3.3, 4.3 ], [ ... . 4. ], [ 1.89 2.3 1. 1. 3. 3. 4. ]] 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 - Correct way to convert old SIGNAL and SLOT to new style?

I'm currently trying to convert an old python program from Python 2 to Python 3, and update from PyQt4 to PyQt5. ... in a way that I understand. 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 - Retrieving the selected values from a CheckButtons object in matplotlib

I have two CheckButtons widgets with 3 elements each. I'd like to read the status of both widgets when either one of ... ex = Example() ex.run() 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 define the HTTP protocol version in requests?

import requests requests.get("http://www.sample.com") How to modifiy the parameter to send the requests like below: ... www.sample.com HTTP/1.1" See Question&Answers more detail:os...

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

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python - regex to get "words" containing letters and (numbers/certain special), but not only numbers

In short: I'd like to match any "word" (contiguous set of characters separated by whitespace) containing 1 letter ... I'm missing here. 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 - Creating a new column based on the values of other columns

I wanted to create a "High Value Indicator" column, which says "Y" or "N" based on two different value ... 15625 4 1500 37500 5 3750 93750 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 embed an image in a text widget

I know it is possible to embed an image in a Tkinter text widget, but I've been unable to find some simple ... ..." thanks for any help! 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.db.utils.IntegrityError: (1062, "Duplicate entry '' for key 'slug'")

I'm trying to follow the tangowithdjango book and must add a slug to update the category table. However I'm getting an ... '' for key 'slug'") 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 - pyQt: radioButton.isChecked() is executed twice

I have this simple window (design.py) derived from Qt designer, which consists of three radio buttons: # ... Any thoughts 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 - Binning in Numpy

I have an array A which I am trying to put into 10 bins. Here is what I've done. A = range(1,94) hist = np. ... the right - [ ] instead of [ )? 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: using multiple functions in a group by

My data has ages, and also payments per month. I'm trying to aggregate summing the payments, but ... different functions for different 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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python - Discord.py Bot sending file to Discord Channel

I am trying to make my discord bot send a jpg file to my discord server, but I keep getting an error that ... problem with my code? Thanks guys 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 - ver.2 PyGreSQL ERROR: from _pg import * ImportError: DLL load failed: The specified module could not be found

I have the same problem that was discussed here, but I haven't credit to comment an answer so I start ... specified module could not be found. 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 - Typeerror: object.__new__() takes no parameters (help)

I'm simply trying to make a code that generates dice (in python). Here's the code: import random class ... to programming so anything helps =] 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 - Storing calculated values in an object

Recently I've been writing a bunch of code like this: class A: def __init__(self, x): self.x = x self._y ... feel this code is Pythonic or not. 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 - scipy.ndimage.filters.convolve and multiplying Fourier Transforms give different results

Here's my code: from scipy.ndimage import filters import numpy a = numpy.array([[2,43,42,123,461],[ ... .ndimage.filters.convolve? 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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python - Counting of adjacent cells in a numpy array

Past midnight and maybe someone has an idea how to tackle a problem of mine. I want to count the number of adjacent cells ( ... [0 0 0 0 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 - Plotly contour subplots each having their own colorbar

I am trying to generate contours using Plotly. There are 5 contours which I am plotting in a 5x1 grid using ... ://plot.ly/python/reference/ 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 adding scalar value to numeric column?

Given a dataframe like this ImageId | Width | Height | lb0 | x0 | y0 | lb1 | x1 | y1 | lb2 | x2 | ... scalar value to a whole column in Pandas? 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 all subsequences of a numpy array

Given an a numpy array of size n and an integer m I want to generate all sequential m length subsequences of ... , function that I'm 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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