Recent questions tagged Python

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python - capitalization of library class names

Why do collection.defaultdict and collection.OrderedDict have different capitalizations? Is there some subtle difference that I ... of? (P3K) See Question&Answers more detail:os...

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

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438 views

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python - Need help decompressing zlib data stored in Aztec barcode (Deutsche Bahn Ticket)

Premise I'm trying to decode the data from the barcode format currently used on tickets issued by Deutsche Bahn ( ... need to verify or modify. 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 attach a vertical scrollbar to a treeview using Tkinter?

I have been trying to attach a horizontal and vertical scrollbar for the tkinter treeview. In my main application all ... "Test") app.mainloop() See Question&Answers more detail:os...

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

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562 views

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python - Fitting distribution with fixed parameters in SciPy

Is it possible to fix parameters while fitting distributions in SciPy? For example, this code: import scipy.stats ... not be used for fitting. See Question&Answers more detail:os...

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

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634 views

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python - to show video streaming inside frame in tkinter

I'm trying to display my live video inside my frame1. I want to know why it's not working as in cv2.imshow ... must be the easiest one, 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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495 views

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python - SQLAlchemy update PostgreSQL array using merge not work

I'm using SQLAlchemy to access PostgreSQL database, and I defined the object like this: class SessionLog(Base): ... Anyone can tell me why? See Question&Answers more detail:os...

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

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367 views

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python - Pandas import error when debugging using PVTS

I am dealing with a very silly error, and wondering if any of you have the same problem. When I try to ... help would be appreciated. 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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606 views

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python - numpy.ma (masked) array mean method has inconsitent return type

I noticed that the numpy masked-array mean method returns different types when it probably should not: import numpy as np ... (A.mean()) # True 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 - Sleep / Suspend / Hibernate Windows PC

I'd like to write a short python script that puts my computer to sleep. I'Ve already searched the API but ... . What function does the trick ? See Question&Answers more detail:os...

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

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416 views

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python - SQLAlchemy: How to change a MySQL server system variable using SQLAlchemy?

I want to set the general_log and general_log_file variables using SQLAlchemy, is there a way to do this? I've ... find anything on the topic. See Question&Answers more detail:os...

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

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391 views

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python - command 'cc' failed with exit status 1 on OSX High Sierra

I'm trying to run on Mac Os high Sierra pip install MySQL-python But I'm getting error: command 'cc' failed ... which pip /usr/local/bin/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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611 views

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python - Scrapy, hash tag on URLs

I'm on the middle of a scrapping project using Scrapy. I realized that Scrapy strips the URL from a hash ... for your feedback and suggestions. See Question&Answers more detail:os...

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

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699 views

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python 3.x - Message object has no attribute 'server'

Using the following lines of code: @bot.command() async def report(ctx): author = ctx.message.author ... some recommendations with no luck. See Question&Answers more detail:os...

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

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630 views

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python - Navigating cursor rows in SQLite (Can we rewind/reset the cursor i.e. go back to first row for example?)

I am trying to understand how the following builtin functions work when sequentially processing cursor rows. The ... would be appreciated. Alan See Question&Answers more detail:os...

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

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571 views

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python - Remote connection to MS SQL - Error using pyodbc vs success using SQL Server Management Studio

I have a MS SQL database in the same network but in other computer. Using the SQL Server Management ... Studio Express to connect remotely. See Question&Answers more detail:os...

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

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605 views

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python 3.x - How to define specificity as a callable scorer for model evaluation

I am using this code to compare performance of a number of models: from sklearn import model_selection X = input data ... for axis 1 with size 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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507 views

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python - Django, how to use filter to check if string field is contained in parameter

Say, I have a model with a text field: class SomeModel keyword=models.CharField(null=True, max_length=255) Now, I ... django', 'filter', etc... See Question&Answers more detail:os...

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

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971 views

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python - How to add axis offset in matplotlib plot?

I'm drawing several point plots in seaborn on the same graph. The x-axis is ordinal, not numerical; the ... prefer to stick with seaborn here. See Question&Answers more detail:os...

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

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449 views

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python - How to take elements along a given axis, given by their indices?

I have a 3D array and I need to "squeeze" it over the last axis, so that I get a 2D array. I need to do ... 2D) to get the output array (2D). See Question&Answers more detail:os...

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

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509 views

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python - How to drop duplicated rows using pandas in a big data file?

I have a csv file that too big to load to memory.I need to drop duplicated rows of the file.So I follow ... results. Is there any 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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474 views

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python - Combining numpy multi-dimensional arrays

I.m facing a little issue to combine arrays in a certain manner. Let's say we have a=array([[1,1,1],[2,2, ... ]]]) Which still does not works... 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

1 answer

python - How do I accept input from arrow keys, or accept directional input?

This may be an xy problem, but I'm trying to to build a kernel based text editor, similar to vim or nano, ... the window, which I didn't want. See Question&Answers more detail:os...

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

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690 views

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python - QMetaObject::invokeMethod doesn't find methods with parameters

This is a follow up of QMetaObject::invokeMethod doesn't find the method. Invoking a method without paramters works. ... app.quit) app.exec_() See Question&Answers more detail:os...

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

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796 views

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python 2.7 - How can I stop my Tkinter GUI from freezing when I click my button?

As someone who is new to programming, I constantly find myself running into errors and issues and, while finding answers ... is. Thank you all! See Question&Answers more detail:os...

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

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466 views

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python 3.x - Pyinstaller .exe cannot find _tiffile module - Loading of some compressed images will be very slow

When I run my code from Pyinstaller the tiff reader works fine. After freezing using Pyinstaller I get the ... upx=True, console=True ) See Question&Answers more detail:os...

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

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507 views

1 answer

python - how to calculate max value in some columns per row in pyspark

I have a data frame read with sqlContext.sql function in pyspark. This contains 4 numerics columns with information ... i do this operation. See Question&Answers more detail:os...

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

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813 views

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python 3.x - How to fix 'ImportError: DLL load failed' in Visual Studio Code (packages installed with Anaconda)

I have installed Anaconda (with the packages that come with it) and VS Code (from within the Anaconda Navigator). ... do I fix this 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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491 views

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python - Looping seems to not follow sequence

I feel like I'm missing something obvious here! seq = {'a': ['1'], 'aa': ['2'], 'aaa': ['3'], ' ... a aa aaa aaaa aaaaa What's going wrong here? See Question&Answers more detail:os...

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

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