Recent questions tagged Python

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python - Is there any type for function in Cython?

Is there any way to tell Cython compiler that param is function. Something like cpdef float calc_class_re(list data, func callback) 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 set a tkinter window to a constant size

I'm programming a little game with tkinter and briefly, I'm stuck. I have a kind od starting menu, in ... the problem, I'm really desperate. 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 do I open an image from the internet in PIL?

I would like to find the dimensions of an image on the internet. I tried using from PIL import Image import ... from the Internet into PIL? 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 - Setting Transparency Based on Pixel Values in Matplotlib

I am attempting to use matplotlib to plot some figures for a paper I am working on. I have two sets of ... insight anyone has on 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 - Pytorch: how to add L1 regularizer to activations?

I would like to add the L1 regularizer to the activations output from a ReLU. More generally, how does one add ... why has it been deprecated? 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 - Nested validation with the flask-restful RequestParser

Using the flask-restful micro-framework, I am having trouble constructing a RequestParser that will validate nested ... for this circumstance. 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 - scipy minimize with constraints

I know that this question should be handled in the manual of scipy.optimize, but I don't understand it well enough. Maybe ... like t[0]+t[1]=1 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: print column name with missing values

I am trying to print or to get list of columns name with missing values. E.g. data1 data2 data3 1 3 3 2 ... but I think should be simpler 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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python - Django REST Framework and FileField absolute url

I've defined a simple Django app that includes the following model: class Project(models.Model): name = models ... but have not been successful. 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 install python3.7 and create a virtualenv with pip on Ubuntu 18.04?

I'm trying to set up a standard virtual-environment(venv) with python 3.7 on Ubuntu 18.04, with pip (or some way ... .7 on 18.04 with a venv? 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 - Add dropout layers between pretrained dense layers in keras

In keras.applications, there is a VGG16 model pre-trained on imagenet. from keras.applications import VGG16 model = ... practice 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 - How can I create a dropdown menu from a List in Tkinter?

I am creating a GUI that builds information about a person. I want the user to select their birth month using ... list to display the months? 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 - Commit in git only if tests pass

I've recently started using git, and also begun unit testing (using Python's unittest module). I'd like to run ... .wasSuccessful(): sys.exit(1) See Question&Answers more detail:os...

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

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219 views

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python - Find the index of the n'th item in a list

I want to find the index of the n'th occurrence of an item in a list. e.g., x=[False,True, ... , while eyquem_occurrence is similar to listcomp. 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 - gaierror: [Errno 8] nodename nor servname provided, or not known (with macOS Sierra)

socket.gethostbyname(socket.gethostname()) worked well on OS X El Capitan. However, it's not working now ... servname provided, or not known See Question&Answers more detail:os...

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

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195 views

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python - How to install pandas from pip on windows cmd?

I am trying to install pandas using pip to run some pandas-based Python programs. I already installed pip. I ... operable program or batch 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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288 views

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python - Django 1.7 migrations won't recreate a dropped table, why?

Using Django 1.7 migrations. I accidentally dropped a table in my database. I assumed that by running migration ... it would recreate the table. See Question&Answers more detail:os...

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 pip trouble installing from requirements.txt

I've had great luck with pip in the past, but working at installing some stuff in a venv on is giving me some ... .0.0 zope.viewlet==4.0.0a1 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 - PyCharm can't find the right paths if I open a directory that is not the Django root

Our projects are usually structured: /project-name /src /django-project-name etc.. readme.md requirements.txt If ... it gets these things 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 - Why does '(base)' appear in my anaconda command prompt?

My anaconda command prompt now says: (base) C:usersuser_name> I would like to know why (base) appears in front of ... . I'm running Windows 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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347 views

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python - Check which columns in DataFrame are Categorical

I am new to Pandas... I want to a simple and generic way to find which columns are categorical in my ... manner to achieve the manual mapping. See Question&Answers more detail:os...

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

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636 views

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python - How to clear console in sublime text editor

How to clear console in sublime text editor. I have searched on internet too..But can't find proper shortcut for that. Please provide info See Question&Answers more detail:os...

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

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652 views

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python - Save base64 image in django file field

I have following input "data:image/png;base64, ... See Question&Answers more detail:os...

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

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507 views

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python - Django: How to access original (unmodified) instance in post_save signal

I want to do a data denormalization for better performance, and put a sum of votes my blog post receives ... .value instance.post.save() See Question&Answers more detail:os...

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

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515 views

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python - Difference between "fill" and "expand" options for tkinter pack method

I know this is a too trivial question, but I am new to python, and I have just started using the tkinter ... in this regards. Thanks in advance! See Question&Answers more detail:os...

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

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381 views

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python - Jupyter (IPython) notebook not plotting

I installed anaconda to use pandas and scipy. I reading and watching pandas tutorials and they all say to open the ... ". 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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378 views

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python - Django Rest Framework - Get related model field in serializer

I'm trying to return a HttpResponse from Django Rest Framework including data from 2 linked models. The models are: ... could do that? 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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264 views

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python - Global error handler for any exception

Is there a way to add a global catch-all error handler in which I can change the response to a generic ... will still return a HTML response. See Question&Answers more detail:os...

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

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