Recent questions tagged Python

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python - Comparison to `None` will result in an elementwise object

Apparantly it will (in the 'future') not be possible anymore to use the following: import numpy as np np. ... to still use lazy initialization? 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 - Compile PyPy to Exe

I know how to compile CPython file to exe using cx_freeze but is it possible to compile a simple program using PyPy to Exe ? 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: TypeError: 'tuple' object is not callable

Getting a type error, 'tuple' object is not callable. Any idea what it could be? (dont worry about the ... = ('OrderAmount', 'StorePrice') 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 scrape dynamic content from a website?

So I'm using scrapy to scrape a data from Amazon books section. But somehow I got to know that it has ... know that data is dynamically created? 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 terminal embedded in a PyQt GUI

There is an existing environment and framework usable via Bash terminal around which I want to make a GUI. What I ... of a button in the GUI? 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 - TensorFlow 1.10+ custom estimator early stopping with train_and_evaluate

Suppose you are training a custom tf.estimator.Estimator with tf.estimator.train_and_evaluate using a ... best_validation.checkpoint) 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 find all sentences of text?

I have been trying to teach myself Regexes in python and I decided to print out all the sentences of a text. ... reads the entire text? 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 - Pagination using scrapy

I'm trying to crawl this website: http://www.aido.com/eshop/cl_2-c_189-p_185/stationery/pens.html I can get all ... ='parse_item'), ) 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 - Serve static files on heroku using AWS S3 for django?

i'm deploying a django application using heroku and AWS S3 for static files, the problem is that i haven't found ... one could help me, 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 - how to perform an inner or outer join of DataFrames with Pandas on non-simplistic criterion

Given two dataframes as below: >>> import pandas as pd >>> df_a = pd.DataFrame([{"a": 1, "b": 4}, { ... produce the "left outer join" of same? 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 - Time-weighted average with Pandas

What's the most efficient way to calculate the time-weighted average of a TimeSeries in Pandas 0.8? For ... messy and slow type conversions. See Question&Answers more detail:os...

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

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473 views

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python - What to do with "The input line is too long" error message?

I am trying to use os.system() to call another program that takes an input and an output file. The ... get it to recognize relative paths? 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 - Sympy: Solving Matrices in a finite field

For my project, I need to solve for a matrix X given matrices Y and K. (XY=K) The elements of each matrix ... or self-made code I could use? See Question&Answers more detail:os...

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

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565 views

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python - Batch gradient descent with scikit learn (sklearn)

I'm playing with a one-vs-all Logistic Regression classifier using Scikit-Learn (sklearn). I have a large ... silent on the matter. 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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331 views

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python - "no matching architecture in universal wrapper" when importing pygame

I'm on a MacBook Pro running Snow Leopard 10.6.8 and Python 2.7.2. I went on the pygame website, ... ? Thanks in advance 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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python - Understanding and evaluating template matching methods

OpenCV has the matchTemplate() function, which operates by sliding the template input across the output, and ... use one over another? 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 remove repeated character pattern in a string

I have a string that may have a repeated character pattern, e.g. 'xyzzyxxyzzyxxyzzyx' I need ... ' becomes 'abcbaccba' See Question&Answers more detail:os...

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

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333 views

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python - Calling NLTK's concordance - how to get text before/after a word that was used?

I'm would like to find out what text comes after the instance that concordace returns. So for instance, if ... after an instance of monstrous? See Question&Answers more detail:os...

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

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274 views

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python - Match set of x,y points to another set that is scaled, rotated, translated, and with missing elements

(Why am I doing this? See explanation below) Consider two sets of points, A and B as shown below It might not look like it, but ... .3), (1929.49, 2017.52), (1580.77, 1868.33)]...

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

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368 views

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python - Can Super deal with multiple inheritance?

When inheriting from two objects like these class Foo(object): def __init__(self,a): self.a=a class Bar(object): ... of this in the first place? See Question&Answers more detail:os...

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

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824 views

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python - Saving with h5py arrays of different sizes

I am trying to store about 3000 numpy arrays using HDF5 data format. Arrays vary in length from 5306 to 121999 np. ... [0].dtype) >>> float64 See Question&Answers more detail:os...

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

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384 views

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python - How to three-way many-to-many relationship in flask-sqlalchemy

What's the proper way to design a three-way many-to-many in flask-sqlalchemy? Assume I have users, ... -many relationship in flask-sqlalchemy. See Question&Answers more detail:os...

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

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380 views

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python - Can I force a numpy ndarray to take ownership of its memory?

I have a C function that mallocs() and populates a 2D array of floats. It "returns" that address and the ... the library if that's helpful. See Question&Answers more detail:os...

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

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670 views

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python - How to "render" HTML with PyQt5's QWebEngineView

How can I "render" HTML with with PyQt5 v5.6 QWebEngineView? I have previously performed the task with PyQt5 v5.4.1 ... can I get the HTML out? See Question&Answers more detail:os...

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

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425 views

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python - Django model one foreign key to many tables

So I have a question I was thinking of creating a single table that has a foreign key to several other tables, and ... I am using django 1.7.10 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 - Injecting function call after __init__ with decorator

I'm trying to find the best way to create a class decorator that does the following: Injects a few ... and hopefully avoid the segfault. See Question&Answers more detail:os...

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

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884 views

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python - pygame clock.tick() vs framerate in game main loop

Every pygame has a game loop that looks like this: while running: for event in pygame.event.get(): if ... confused, other answers are welcome. See Question&Answers more detail:os...

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

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376 views

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python - How can I detect DOS line breaks in a file?

I have a bunch of files. Some are Unix line endings, many are DOS. I'd like to test each file to see ... I can test for? Something similar? See Question&Answers more detail:os...

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

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