Recent questions tagged Python

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In Python and nosetests testing framework there is this idea of tagging your tests: from nose.plugins.attrib import ... grep='pattern to match' 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 shuffle an array of numbers without two consecutive elements repeating?

I'm currently trying to get an array of numbers like this one randomly shuffled: label_array = np.repeat(np. ... better way of doing 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 - Find maximum length of consecutive repeated numbers in a list

My question is how to find the maximum length of consecutive repeated numbers (or elements in general) in a list. ... and 2 only repeated once). 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 - PyQt - Automatically refresh a custom view when the model is updated?

By default, the built-in views in PyQt can auto-refresh itself when its model has been updated. I wrote my own ... . Which signal should I 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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python - Pandas DataFrame grouping by Timestamp

I have a use case where: Data is of the form: Col1, Col2, Col3 and Timestamp. Now, I just want to get ... to bin them at 30 minutes interval. 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 draw a line following your mouse coordinates with tkinter?

I have tried using the following code to draw points that create a line in tkinter: import tkinter as tk from ... a solution to this problem? 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 - Using scipy to minimize a function that also takes non variational parameters

I want to use the scipy.optimize module to minimize a function. Let's say my function is f(x,a): def ... to be used as function arguments 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 - .matplotlibrc and default options

I am studying the matplotlib library for Python. I am starting to understand some of its basic intricacies, as the ... " in the library? 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 determine the IP address of the server after connecting with urllib2?

I am downloading data from a server using urllib2. But I need to determine the IP address of the ... HTTPRedirects' or a loadbalancing server 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 - Is there a way to get correlation with string data and a numerical value in pandas?

I'm trying to get a correlation in pandas that's giving me a bit of difficulty. Essentially I want to answer ... is unclear please let me know. 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 can I fill in a missing values in range with Pandas?

I have a dataset with a number of values like below. >>> a.head() value freq 3 9 1 2 11 1 0 ... irrelevant so don't worry about 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 - pyqt auto connect signal

I want use the autoconnection feature. I am using this example: http://www.eurion.net/python-snippets/snippet/ ... .exec_() Thanks a lot 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 - Throttling requests with multiple proxies

I'm currently assigning random proxies to requests via a custom middleware. I'd like to key download ... pointers 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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python - Get instagram followers

I want to parse a website's followers count with BeautifulSoup. This is what I have so far: username_extract = ' ... idea what I am doing wrong? 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 - How validate a cell in QTableWidget?

I work eith pyqt4 in python3.4 I want to validate if the text in the cell is a float number when it is introduced. How I do 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 3.x - How to add a slider to a choropleth in altair?

I am trying to add a slider to my choropleth plot. The slider is based on "years" from 2006 to 2012 My data ... fips code. This is the output: 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 implement "__iadd__()" for an immutable type?

I would like to subclass an immutable type or implement one of my own which behaves like an int does as shown in the ... this, and if so, how? 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 apply Functions on numpy arrays using pandas groupby function

I'm very new to pandas so I hope this will have an easy answer (and I also appreciate all pointers to even ... do np.arrays not work in pandas? 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 - PyQt Main Window vs. Dialog

Probably a silly noob question, but here it is (condensed example): I've got some basic code to create a ... a QMainWindow? Best Regards, Ben 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 - Drop row pandas with a list of argument

I would like to drop all the row which are not in a list in pandas DataFrame For instance, consider this dataframe ... in List] 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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python - Why does __get__ take an owner while __set__ and __delete__ do not?

From the Python data model documentation: object.__get__(self, instance, owner=None) Called to get the attribute of ... part of this 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 - SQLite transaction for CSV importing

I'm very new to python and have been working on my raspberry pi to get a script up and running to ... and transaction. Any help 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 - Why can't I apply shift from within a pandas function?

I am trying to build a function that uses .shift() but it is giving me an error. Consider this: In ... Ambiguous truth value with boolean logic See Question&Answers more detail:os...

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

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608 views

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python - Stacking arrays in numpy

I have two arrays: A = np.array([1, 2, 3]) B = np.array([2, 3, 4]) C = np.stack((A, B), axis=0) print ... (2, 3) Shouldn't the shape be (6,) ? 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 - Is there a difference between "== False" and "is not" when checking for an empty string?

I have read elsewhere on stackoverflow that the most elegant way to check for an empty string in Python (e.g. let' ... == False: # do some stuff See Question&Answers more detail:os...

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

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804 views

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python - Check if an input is a valid roman numeral

I got a program that converts Roman numerals to integers and vice versa. My problem is that I don′t really know ... 4000 so they must be there. See Question&Answers more detail:os...

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

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861 views

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python - Unknown url type error in urllib2

I have searched a lot of similar question on SO, but did not find an exact match to my case. I am ... a similar question in python mailing list See Question&Answers more detail:os...

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

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642 views

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python - pytz: return Olson Timezone name from only a GMT Offset

I have a legacy application i'm going to need to supplement some data with. Currently, we have a DB ... Any suggestions are greatly 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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