Recent questions tagged PYTHON

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python - Decode UTF-8 encoding in JSON string

I have JSON file which contains followingly encoded strings: "sender_name": "Hornu00c3u00adkovu00c3u00a1", I am ... to the specification? 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 querying all rows of azure table

I have around 20000 rows in my azure table . I wanted to query all the rows in the azure table . But due to ... .Is there a way 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 - Split a series on time gaps in pandas?

Is it possible to split a time series on it's gaps. For example, suppose we had the following: rng2011 = pd. ... gaps of ten minutes or longer. 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 protect againt typos when setting value for class members?

Consider the following example: class A(): def __init__(self): self.veryImportantSession = 1 a = A() a. ... no attribute 'a' 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 - Calculate screen DPI

I am using Python to build an image-rendering app that renders numpy arrays as images. I need a way to ... framework, I'd prefer PyQt5. See Question&Answers more detail:os...

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

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341 views

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python - Change QLabel text dynamically in PyQt4

My question is: how can I change the text in a label? The label is inside a layout, but setText() does ... , the label wont change its content. 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 - list comprehension in pandas

I'm giving a toy example but it will help me understand what's going on for something else I'm trying to do. ... you all so much for your 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 - Uploading files using Browse Button in Jupyter and Using/Saving them

I came across this snippet for uploading files in Jupyter however I don't know how to save this file on ... ') display(_upload_widget) _upload() 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 - Why does the UnboundLocalError occur on the second variable of the flat comprehension?

I answered a question here: comprehension list in python2 works fine but i get an error in python3 OP's error was ... . Using Python 3.4.3. 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 Canvas create_window()

I'm trying to use Tkinter Canvas (self._canvas) to create window using create_window function. The window field ... =True) tkRoot.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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236 views

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python - Using Selenium in the background

I'm using Selenium and chrome webdriver but when I run scripts it opens a window. Is there any way that it ... popping up if that's 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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309 views

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python - Decorating a class method after @property

I want to wrap every method of various objects except __init__ using a decorator. class MyObject(object): def ... I missing something obvious? 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 dictionary match key values in two dictionaries

In the below shown dictionaries i want to check whether the key in aa matches the key in bb and also the value ... bot matches in aa and bb" See Question&Answers more detail:os...

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

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379 views

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python - Detecting whether or not text is English (in bulk)

I'm looking for a simple way to detect whether a short excerpt of text, a few sentences, is English or ... TOS didn't allow automated queries. See Question&Answers more detail:os...

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

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631 views

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python - How do I calculate a 3D centroid?

Is there even such a thing as a 3D centroid? Let me be perfectly clear-I've been reading and ... (centroid) spaceLocator(position=centroid) See Question&Answers more detail:os...

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

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1.3k views

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python - Apache Airflow: Delay a task for some period of time

I am trying to execute a task after 5 minutes from the parent task inside a DAG. DAG : Task 1 ----> ... in Apache Airflow? 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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295 views

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python - Calculate attribute if it doesn't exist

I am trying to access an attribute that shouldn't be created in the __init__ method of my class but can be ... execute it in the init method. See Question&Answers more detail:os...

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

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408 views

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python - Why is sys.getdefaultencoding() different from sys.stdout.encoding and how does this break Unicode strings?

I spent a few angry hours looking for the problem with Unicode strings that was broken down to something that ... Token(myString) print(tok) See Question&Answers more detail:os...

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

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355 views

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python - Recursive DotDict

I have a utility class that makes Python dictionaries behave somewhat like JavaScript objects as far as getting and setting ... ]) <type 'dict'> See Question&Answers more detail:os...

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

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398 views

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python - ctypes and passing a by reference to a function

I'm trying to use libpcap in python3 using ctypes. given the following function in C pcap_lookupnet(dev, &net, ... you deal with &blah values ? See Question&Answers more detail:os...

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

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330 views

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python - Find the column names which have top 3 largest values for each row

For example the data look like: df={'a1':[5,6,3,2,5],'a2':[23,43,56,2,6], 'a3':[4,2,3,6, ... , df1row], axis=0) rslt=rslt.reset_index(drop=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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256 views

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python - How can I order a list of connections

I currently have a list of connections stored in a list where each connection is a directed link that connects ... to order these connections? See Question&Answers more detail:os...

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

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766 views

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python - Matplotlib: y-axis label with multiple colors

I was wondering what the best way to make a y-label where each word in the label can be a different color. ... plt.show() Thanks for the 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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303 views

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python - How to write multi column in clause with sqlalchemy

Please suggest is there way to write query multi-column in clause using SQLAlchemy? Here is example of the ... variable and less predictable. See Question&Answers more detail:os...

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

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385 views

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python - disabling autoescape in flask

I want to show some text to the user. the string variable I'm sending has multiple newline characters and I dont ... the proper 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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295 views

1 answer

python - Finding unique points in numpy array

What is a faster way of finding unique x,y points (removing duplicates) in a numpy array like: points = numpy. ... ((b.real, b.imag)) See Question&Answers more detail:os...

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

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378 views

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python - SQLAlchemy: prevent automatic closing

I need to insert/update bulk rows via SQLAlchemy. And get inserted rows. I tried to do it with session. ... automatically. How to prevent 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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382 views

1 answer

python - Why are multiprocessing.sharedctypes assignments so slow?

Here's a little bench-marking code to illustrate my question: import numpy as np import multiprocessing as mp # ... a Windows 7 x64 system. See Question&Answers more detail:os...

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

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