Recent questions tagged Python

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python - What is `antialiased` in `matplotlib.collections` and how do you set the parameter for it?

What is antialiased in matplotlib.collections and how do you set the parameter for 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 - Does urllib2.urlopen() cache stuff?

They didn't mention this in python documentation. And recently I'm testing a website simply refreshing the ... cache stuff somewhere, right? 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 - Adding widgets to qtablewidget pyqt

Is there anyway to add like a button in qtablewidget? But the date within the cell would stil have ... .itemDoubleClicked.connect(self.editItem) 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 - Display and format Django DurationField in template

Im using Django 1.8, and i have one of my field defined as DurationField, but i dont find any way to ... something more like 2hours 30 min 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 - Error when checking target: expected dense_1 to have 3 dimensions, but got array with shape (118, 1)

I'm training a model to predict the stock price and input data is close price. I use 45 days data to predict ... I wrong and what should I do? See Question&Answers more detail:os...

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

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323 views

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python - a == b is false, but id(a) == id(b) is true?

Ran into the following: >>> class A: ... def __str__(self): ... return "some A()" ... >>> class B(A): ... ) True # what?! What's going on 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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python - Missing bootstrap resources in Django-Rest-Framework

I'm using the new django-rest-framework 2.0 and have been following the tutorial for creating a rest based API. ... into a central repo.. Ideas? 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

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python - Keras + Tensorflow: Prediction on multiple gpus

I'm using Keras with tensorflow as backend. I have one compiled/trained model. My prediction loop is slow ... be greatly 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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python - zip() alternative for iterating through two iterables

I have two large (~100 GB) text files that must be iterated through simultaneously. Zip works well for smaller ... without using >200GB of ram? 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 build uWSGI with SSL support to use the websocket handshake API function?

What I have: ubuntu 14.4 uwsgi running with flask (python) with nginx as reverse proxy. What I want ... : unable to complete websocket handshake See Question&Answers more detail:os...

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

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433 views

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python - How to make a generator callable?

I'm trying to create a dataset from a CSV file with 784-bit long rows. Here's my code: import tensorflow as ... this the reason for the error? See Question&Answers more detail:os...

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

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324 views

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python - Devanagari text rendering improperly in PyGame

We have a small web app that we want to convert into something native. Right now, it's got a lot of moving ... batch mode to get my work done. 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 - Retrieve distinct values from the hash key - DynamoDB

I have a dynamodb table to store email attribute information. I have a hash key on the email, range key on ... to calculate the cost per query? See Question&Answers more detail:os...

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

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297 views

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python - Can Pickle handle multiple object references

If I have objects a and b and both reference object obj, what happens when I Pickle and then restore ... and initially equal — objects? See Question&Answers more detail:os...

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

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705 views

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python - pip freeze does not show all installed packages

I am using a virtualenv. I have fabric installed, with pip. But a pip freeze does not give any hint about that. ... be? Any way to debug 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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320 views

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python - Sphinx generates empty documentation

I'm trying to generate documentation for my project with Sphinx, but the output documentation doesn't contain ... _build/html/searchindex.js See Question&Answers more detail:os...

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

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413 views

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python - Why does cls.__name__ not appear in dir()?

Let's say I have a simple class: class Foobar(object): pass If I use dir(Foobar), I'll get the following ... . Why does Python behave that 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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346 views

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python - How to convert an integer to a list of bits?

I'm trying to represent an integer as a list of bits and left pad it to 8 bits only if the integer is < ... 8 bits and also for larger ones? See Question&Answers more detail:os...

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

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317 views

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python - How do I set attribute default values in sqlalchemy declarative?

In SQLAlchemy Declarative, how do I set up default values for columns, such that transient or pending object ... a custom declarative baseclass. See Question&Answers more detail:os...

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

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429 views

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python - How to give Tkinter file dialog focus

I'm using OS X. I'm double clicking my script to run it from Finder. This script imports and runs the function ... ends up on top? Thanks, Wes See Question&Answers more detail:os...

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

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527 views

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python - Using a custom JSON encoder for SQLAlchemy's PostgreSQL JSONB implementation

I am using SQLAlchemy's core library to access some PostgreSQL database. Consider I have the following table: ... data into PostgreSQL dialect? See Question&Answers more detail:os...

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

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282 views

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python - Get files from Directory Argument, Sorting by Size

I'm trying to write a program that takes a command line argument, scans through the directory tree provided by ... me in the right direction? See Question&Answers more detail:os...

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

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422 views

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python - Can I use rpy2 to save a pandas dataframe to an .Rdata file?

I never used rpy2 before, but I am just wondering if I could use it to save a python object (a pandas ... to use the information in R. 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 - How to solve AttributeError when importing igraph?

When I import the igraph package in my project, I get an AttributeError. This only happens in the project directory ... can I solve this error? See Question&Answers more detail:os...

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

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483 views

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python - How to handle proxies in urllib3

I am having trouble finding solid examples of how to build a simple script in urllib3 which opens a url (via ... 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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275 views

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python - PIL image show() doesn't work on windows 7

I would like to show an image using python on windows and other platforms. When I do: from PIL import ... PIL that would work crossplatform? See Question&Answers more detail:os...

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

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593 views

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python - How do I plot just the positive error bar with pyplot.bar?

I'm trying to plot 4 average values with positive error bars and the max value within the plot. ... suggestions would be greatly 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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346 views

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python - Type hints: Is it a bad practice to alias primitive data types?

In Python documentation for typing & type hints we have the below example: Vector = List[float] def scale ... new-features/#annotated-type-hints See Question&Answers more detail:os...

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

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