Recent questions tagged Python

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python - Run Function in the Background and Update UI

I am using PyQt to make a GUI for a project. Screenshot of GUI After inputting a number and submitting it, I ... , the GUI doesn't 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 - How to import a gzip file larger than RAM limit into a Pandas DataFrame? "Kill 9" Use HDF5?

I have a gzip which is approximately 90 GB. This is well within disk space, but far larger than RAM. How ... pandas.read_table() 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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python - Fetch results from BigQueryOperator in airflow

I am trying to fetch results from BigQueryOperator using airflow but I could not find a way to do it. I ... available way to fetch the results. 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 - Slugs - Key (slug)=() is duplicated

just started fooling around with Django and came across a link here on how to create slugs. I was told to ... order to populate the 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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python - Local access to Amazon S3 Bucket from EC2 instance

I have an EC2 instance and an S3 bucket in the same region. The bucket contains reasonably large (5-20mb) ... would be appreciated, 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 - Why is django ORM so much slower than raw SQL

I have the following two pieces of code: First, in SQL: self.cursor.execute('SELECT apple_id FROM main_catalog ... Django being so much slower? 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 - Specifying column order following groupby aggregation

The ordering of my age, height and weight columns is changing with each run of the code. I need to keep the ... .to_csv(output_file, sep=',') 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 use a Qthread to update a Matplotlib figure with PyQt?

I'm really having a hard time to understand how to use Threads in PyQt. I made a simple example of what I ... () sys.exit(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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python - What is the most pythonic way to open a file?

I'm trying to clean up my code a little bit, and I have trouble figuring which of these 2 ways is considered the ... it adds a line of code ? 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 - Mac OS X Lion Psycopg2: Symbol not found: _PQbackendPID

I recently upgraded to Mac OS X Lion and am trying to get psycopg2 working again with python 2.6. The ... .so Expected in: flat namespace 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 - Openpyxl : need the max number of rows in a column that has data in Excel

I need the last row in a particular column that contains data in Excel. In openpyxl sheet.max_row or max_column gets ... a more concise one !! 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 - Process vs. Thread with regards to using Queue()/deque() and class variable for communication and "poison pill"

I would like to create either a Thread or a Process which runs forever in a While True loop. I need to send ... some sort of stop() 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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python - Why does Go's map iteration order vary when printing?

package main import "fmt" func main(){ sample := map[string]string{ "key1":"value1", "key2":"value2", "key3":" ... 'value2', 'key1': 'value1'}` 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 create a min-max plot by month with fill_between

I have to show month names as xticks and while I plot the figure and pass x as month names it plots it ... months and y axis as degree Celsius See Question&Answers more detail:os...

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

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749 views

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python - windows thinks tkinter is not responding

I have a little app in python, which works fine except for this minor problem: it supposed to run a loop ... s a way to prevent that. 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 - Superscript format in matplotlib plot legend

I'm doing some curve fitting with the wonderful scipy curve fit. When plotting the data and adding a legend label ... plt.legend() plt.show() See Question&Answers more detail:os...

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

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666 views

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python 2.7 - Re-using deferred objects in Twisted

In Twisted, it seems that a deferred object can only be used once after its callback has fired, as opposed to ... ) # Got inline result: foo 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 napoleon and autodoc interact documenting members

I noticed a change in behavior in how Sphinx renders class descriptions. Given this code # my example ... regarding Sphinx configuration 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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493 views

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python 2.7 - PyInstaller does NOT work when including Pysnmp

Just trying one of the official documentation site examples: from pysnmp.hlapi import * errorIndication, errorStatus, ... ? 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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561 views

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python - PyCharm - Can't create App Engine Application using DJango

The last few days I tried to create an App Engine Application based on DJango using PyCharm Professional 2016.3 ... problem drives me crazy. See Question&Answers more detail:os...

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

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754 views

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python - Module installed with PIP in virtualenv not found

Getting a very strange error. I am making a virtual environment and initializing it with a pip requirements.txt file, ... seeps into the venv?? See Question&Answers more detail:os...

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

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730 views

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python - How do you assign a "rect" attribute to a pygame.sprite.rect rectangle in Pygame?

This question has been asked before, but the code they answer doesn't apply to me. I want to check when ... attribute to my rectangles? 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 - Numpy - ImportError: cannot import name shares_memory

I'm going to preface this by saying that I'm relatively new to Python and so please forgive me if I ... can provide would be much 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 - Accuracy metric of a subsection of categories in Keras

I've got a 3-class classification problem. Let's define them as classes 0,1 and 2. In my case, class 0 is ... 14/20 print(accuracy_2cat) 70.0 % 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 3.x - discord.py get member instance from name#discriminator

I have a string with the name of an user user = 'somename#1111' how can I mention him? (I get the name from ... hello!") But it doesn't 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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539 views

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python - Element-wise multiplication results between 2D arrays in KISSFFT are different than SciPy FFT

I'm experimenting with KISSFFT in C++ after being discouraged to use FFTPACK to process 2D arrays. I wrote an element- ... w, h); return 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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515 views

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python 2.7 - How to open multiple windows in Tkinter

I am working on GUI Project in Python using Tkinter,I want to open Multiple Windows in GUI at a time each ... can I acheive multiple Forms ? See Question&Answers more detail:os...

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

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1.1k views

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python - Numpy divide by zero encountered in true_divide on np.where()

When I got np.where that tries to avoid division by zero, I am still getting the error, even when p_arr - 0.5 should be ... - 0.5 != 0))) # 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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