Recent questions tagged Python

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python - Problems with passing and getting arrays for a C function using ctypes

I'm trying to use ctypes for passing a bidimensional array and an unidimensional array to a C function from my ... I apologize for my English. 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 - Cross-validation for Sklearn 0.20+?

I am trying to do cross validation and I am running into an error that says: 'Found input variables with ... Any help would be great! 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: How do I release a model without source code?

I am using Tensorflow + Python. I am curious if I can release a saved Tensorflow model (architecture + trained ... query and get a result? 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 - Mapping values and merging dataframes based on multiple column values

I have the following dataframes: df1: dataframe with patient critical notes AREA DATE_TIME CRITICAL ISSUE NOTES 0013 11 ... 'ZIP','TIME_NOTED']) 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 are the results of integer division and converting to an int after division different for large numbers?

print(10**40//2) print(int(10**40/2)) Output of the codes: 5000000000000000000000000000000000000000 ... print() looks 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 - Usual pytest workflow - can't run tests in a file

I'm trying to setup a project (Python 3.4.4, pytest 3.3.1) to use pytest, but pytest is failing to ... I'm missing something obvious. 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 - Error with simple subclassing of pathlib.Path: no _flavour attribute

I'm trying to sublclass Path from pathlib, but I failed with following error at instantiation from pathlib ... (the instance to initialize) 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 - Remove specific characters from a string

I want to remove all vowels from a string that the user gives. Below is my code and what I get as an ... which is remove it from the string. 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 arrive at the unit matrix from numpy.dot(A, A_inv)

I prepare a matrix of random numbers, calculate its inverse and matrix multiply it with the original matrix. This, in ... (I have 4 cores)? 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 - Scrapy, scrape pages from second set of links

I've been going through the Scrapy documentation today and trying to get a working version of - https:/ ... last_unit_page, callback=self.parse) 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 - Can I use the uwsgi protocol to call http?

Here's a data flow: http <--> nginx <--> uWSGI <--> python webapp I guess there's http2uwsgi transfer ... is not directly reachable by http. 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 a class that can be added to itself can't be summed? (a+a works, sum([a,a]) fails)

In the following snippet, I create a Counter object and I try add it to itself using three ways. Standard addition ... +: 'int' and 'Counter' See Question&Answers more detail:os...

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

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718 views

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python - Forming a matrix by summing 2 arrays element-array wise using NumPy

Let's say I have the following NumPy arrays: i = array([2, 4, 5]) j = array([0, 1, 2]) I would like to have ... added (k = 0, 1, 2 in this case) 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 - Putty: _tkinter.TclError: no display name and no display environment variable

Linked Question: Mac OS X: _tkinter.TclError: no display name and no $DISPLAY environment variable The above has ... error instead of TclError? 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 add a standard normal pdf over a seaborn histogram

I would like to add a standard normal pdf curve over a histogram built with seaborn. import numpy as np ... 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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378 views

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python 3.x - How to retrieve html source from the web application WindGuru

It's only happen when I use the headless mode. from selenium import webdriver options = webdriver.ChromeOptions() ... /html> What is happening? 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 - Pandas Dataframe: Replace charactere conditionally

I have a dataframe with a column named "Size". This column have some values containing the size of an android ... you guys help me with 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 - I want to group tuples based on similar attributes

I have a list of tuples. [ (1, 2), (2, 3), (4, 3), (5, 6), (6, 7), (8, 2) ] I want ... realized that it wouldn't work, and then time ran 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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python - Why do treeview widget put an extra column although I only gave it two? I also can't control the width of it

I can't figure out how to control the width of the widget I can't make it display only 2 columns from Tkinter ... , column = 0) root.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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655 views

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python - Using a text file to lay out a words into a grid form

I have a list of 6 words from a text file and would like to open the file to read the list of words as ... , 'r').readlines()) print words_file See Question&Answers more detail:os...

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

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751 views

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python - How to pass array pointer to Numba function?

I'd like to create a Numba-compiled function that takes a pointer or the memory address of an array as an ... be used in other Numba functions. See Question&Answers more detail:os...

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

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1.5k views

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python 3.6 - seaborn stripplot ValueError: Could not interpret input 'OS'

I am new to seaborn(version: '0.9.0'). I loaded my data from a CSV file in pandas but when I am trying ... link to the CSV file: The CSV File 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 - Sqlalchemy include empty relationship with join and contains_eager

I have 2 models Recording and Recording_results like so class Recording(Base): __tablename__ = 'recordings' id = Column ... the join query too ? 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 - Drag n Drop inside QgraphicsView doesn't work (PyQt)

I created a custom class for some buttons. Those are a "draggable" buttons, which its name indicates, are buttons ... we accepted it e.accept() See Question&Answers more detail:os...

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

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587 views

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python - Memory efficient extraction of overlapping patches from matrix

short story: This is a follow up question to: Fast Way to slice image into overlapping patches and merge ... shape=shape, strides=strides) See Question&Answers more detail:os...

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

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480 views

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python - How to prevent a list from changing after being used as parameter in function?

I have a little code which is not outputting the result as I wanted. Code def func_a(list1): list1.insert(2,'3') list1. ... , 'a', 'b', 'c'] See Question&Answers more detail:os...

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

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549 views

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python - pip install django error

I'm trying to install django using pip in Terminal. I always get an exception, however. The last error is ... Python/2.7/site-packages/django' See Question&Answers more detail:os...

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

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716 views

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python 2.7 - ODEINT with multiple parameters (time-dependent)

I'm trying to solve a single first-order ODE using ODEINT. Following is the code. I expect to get 3 values ... to replicate the code in Python. See Question&Answers more detail:os...

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

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