Recent questions tagged Python

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python - How can i parse a comma delimited string into a list (caveat)?

I need to be able to take a string like: '''foo, bar, "one, two", three four''' into: ['foo', ... solution is going to involve the shlex module. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Empty lines while using minidom.toprettyxml

I've been using a minidom.toprettyxml for prettify my xml file. When I'm creating XML file and using ... testsuite> any suggestions ? thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Attempted relative import beyond toplevel package

Here is my folder structure: Mopy/ # no init.py ! bash/ __init__.py bash.py # <--- Edit: yep there is ... message is from the main() in bash. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Suppress output from subprocess.Popen

How do you stop the output from subprocess.Popen from being output? Printing can sometimes be slow if there is a great deal of it. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Keep a datetime.date in 'yyyy-mm-dd' format when using Flask's jsonify

For some reason, the jsonify function is converting my datetime.date to what appears to be an HTTP date. How can ... () solution does not work. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Library to read ELF file DWARF debug information

Any recommendations for a good cross-platform library for reading ELF file debug information in DWARF format? I'd ... info in a Python program. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to convert an image from np.uint16 to np.uint8?

I am creating an image so: image = np.empty(shape=(height, width, 1), dtype = np.uint16) After that I ... like to convert the image to CV_8UC1. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - urllib.request.urlopen(url) with Authentication

I've been playing with beautiful soup and parsing web pages for a few days. I have been using a line of code which ... () (3) instead of (1) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Problems filtering django datetime field by month and day

Can someone explain to me why the following filters are not working at the month and day level? Filtering by year seems ... ... >>> counter 35 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Why does json.dumps(list(np.arange(5))) fail while json.dumps(np.arange(5).tolist()) works

I noticed this problem when a computer running Ubuntu was updated recently and the default version of Python changed to ... of a numpy array? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to use concurrent.futures with timeouts?

I am trying to get timeouts to work in python3.2 using the concurrent.futures module. However when it does timeout, ... == '__main__': main() See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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188 views

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python - How to save Pandas pie plot to a file?

I have the following code: import pandas as pd import matplotlib matplotlib.style.use('ggplot') df = pd. ... has no attribute 'get_figure' See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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183 views

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python - Reverse DataFrame column order

I want to simply reverse the column order of a given DataFrame. My DataFrame: data = {'year': [2010, 2011 ... and not the entire column itself. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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204 views

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python - Numpy transpose of 1D array not giving expected result

I am trying a very basic example in Python scipy module for transpose() method but it's not giving expected result. I ... transpose) [1, 2, 3] See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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356 views

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python - django-rest-framework how to make model serializer fields required

I have a model that I'm filling out step by step, it means I'm making a form wizard. Because of that ... a validation error if they're empty. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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236 views

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python - How do I avoid KeyError when working with dictionaries?

Right now I'm trying to code an assembler but I keep getting this error: Traceback (most recent call ... registerField) Help is appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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560 views

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python - Arguments that are dependent on other arguments with Argparse

I want to accomplish something like this: -LoadFiles -SourceFile "" -DestPath "" -SourceFolder "" -DestPath "" - ... , you MUST have -DestPath? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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646 views

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python - sqlalchemy: create relations but without foreign key constraint in db?

Since sqlalchemy.orm.relationship() already implies the relation, and I do not want to create a ... constraints after alembic migrations. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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793 views

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python 3.x - pip3 install not working - No module named 'pip._vendor.pkg_resources'

When trying to install a package for Python 3 (in Ubuntu), using pip3 install packageName (or sudo pip3 install ... info wheel wheel-0.29.0.egg-info xdg xdiagnose xdiagnose...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Pickle with custom classes

Suppose I have a simple python class definition in a file myClass.py class Test: A = [] And I also have two test ... .load(f) f.close print y.A See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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514 views

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python - Sum across all NaNs in pandas returns zero?

I'm trying to sum across columns of a Pandas dataframe, and when I have NaNs in every column I'm getting sum = ... index 2. What am I missing? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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136 views

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python - Remove "add another" in Django admin screen

Whenever I'm editing object A with a foreign key to object B, a plus option "add another" is available next to the ... . I'm using Django 1.0.2 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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388 views

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python - Apply format to a cell after being written in XlsxWriter

I work on python using XlsxWriter and I've been trying to solve this problem with no success: My app must ... content? Thank you in advance. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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206 views

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python - Clicking on a link via selenium

I am trying to do some webscraping via Selenium. My question is very simple: How do you find a link and then ... using Selenium and click on it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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233 views

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python - Django admin - make all fields readonly

I'm trying to make all fields readonly without listing them explicitly. Something like: class CustomAdmin(admin. ... point. Any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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201 views

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python - Get timezone used by datetime.datetime.fromtimestamp()

Is it possible, and if yes, how, to get the time zone (i.e. the UTC offset or a datetime.timezone ... datetime instance, but it doesn't. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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187 views

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python - importing a module in nested packages

This is a python newbie question: I have the following directory structure: test -- test_file.py a -- b -- ... ImportError: No module named a.b See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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211 views

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python - Assigning to columns in NumPy?

How could the following MATLAB code be written using NumPy? A = zeros(5, 100); x = ones(5,1); A(:,1) ... an array to a column of another array. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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