Recent questions tagged Python

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python - How do I tell PyLint "it's a variable, not a constant" to stop message C0103?

I have a module-level variable in my Python 2.6 program named "_log", which PyLint complains about: ... module-level variables as constants? 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 - Elegantly changing the color of a plot frame in matplotlib

This is a kind of follow-up question to this post, where the coloring of axes, ticks and labels was discussed. I ... 0.99.1.1 under ubuntu. 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 - How to do tuple unpacking in a template 'for' loop

In my views.py, I'm building a list of two-tuples, where the second item in the tuple is another list, ... , so any input 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 - Set value to an entire column of a pandas dataframe

I'm trying to set the entire column of a dataframe to a specific value. In [1]: df Out [1]: issueid industry 0 001 ... 3.5.2 and pandas 0.18.1. 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 - Asyncio two loops for different I/O tasks?

I am using Python3 Asyncio module to create a load balancing application. I have two heavy IO tasks: A SNMP ... managed to make it 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 - Pymongo / MongoDB: create index or ensure index?

I don't understand the difference between create_index and ensure_index in pymongo. On the MongoDB indexes page, ... use create_index for 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 - What is this odd sorting algorithm?

Some answer originally had this sorting algorithm: for i from 0 to n-1: for j from 0 to n-1: if A[ ... and published by arXiv after my question. 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 - Trigger an event when clipboard content changes

I'm trying to get the clipboard content using a Python script on my Mac Lion. I'm searching for an event ... watching the clipboard. Any ideas? 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 - Noun phrases with spacy

How can I extract noun phrases from text using spacy? I am not referring to part of speech tags. In the ... noun phrases or regular parse trees. 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 - Convert np.array of type float64 to type uint8 scaling values

I have a particular np.array data which represents a particular grayscale image. I need to use SimpleBlobDetector() ... .. Any help? 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 - Why do we need to use rabbitmq

Why do we need RabbitMQ when we have a more powerful network framework in Python called Twisted. I am trying to ... on how to use RabbitMQ? 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 word_tokenize in data frame

I have recently started using the nltk module for text analysis. I am stuck at a point. I want to use ... help! 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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143 views

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python - How to get plain text out of Wikipedia

I'd like to write a script that gets the Wikipedia description section only. That is, when I say /wiki bla bla bla ... It" How can I do 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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127 views

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python - Remove the first character of a string

I would like to remove the first character of a string. For example, my string starts with a : and I want to ... I am writing my 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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223 views

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python - Resize an image without distortion OpenCV

I am using python 3 and latest version of openCV. I am trying to resize an image using the resize function ... need the image to be 28x28. 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 - What does sudo -H do?

After trying to install virtualenv with pip $ pip install virtualenv I got a permission denied error IOError: [Errno 13] ... sudo's -H flag 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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python - Send log messages from all celery tasks to a single file

I'm wondering how to setup a more specific logging system. All my tasks use logger = logging.getLogger( ... messages created in my tasks. See Question&Answers more detail:os...

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

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237 views

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python - How to add and remove new layers in keras after loading weights?

I am trying to do a transfer learning; for that purpose I want to remove the last two layers of the neural ... were accessed without issue: [] See Question&Answers more detail:os...

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

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423 views

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python - How to generate random colors in matplotlib?

What's the trivial example of how to generate random colors for passing to plotting functions? I'm calling scatter ... RGB or RGBA, however. See Question&Answers more detail:os...

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

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126 views

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python - Foreign key from one app into another in Django

I'm wondering if it's possible to define a foreign key in a models.py file in Django that is a reference to ... I just got the syntax 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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366 views

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python - Argmax of numpy array returning non-flat indices

I'm trying to get the indices of the maximum element in a Numpy array. This can be done using numpy.argmax. ... any 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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300 views

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python - How to add a title to Seaborn Facet Plot

How do I add a title to this Seaborne plot? Let's give it a title 'I AM A TITLE'. tips = sns.load_dataset ... .plt.scatter, "total_bill", "tip") 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 - IronPython: EXE compiled using pyc.py cannot import module "os"

I have a simple IronPython script: # Foo.py import os def main(): print( "Hello" ) if "__main__" == __name__: ... fine if I run with ipy.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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406 views

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python - Django admin interface: using horizontal_filter with inline ManyToMany field

I have a Django model field that I'd like to inline. The field is a many-to-many relationship. So ... admin.site.register(Project, ProjectAdmin) See Question&Answers more detail:os...

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

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297 views

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python - pep8 compliant deep dictionary access

What is the pep8 compliant way to do deep dictionary access? dct = { 'long_key_name_one': { 'long_key_name_two': ... nice and is pep8 compliant? See Question&Answers more detail:os...

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

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160 views

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python - Create a complement of list preserving duplicate values

Given list a = [1, 2, 2, 3] and its sublist b = [1, 2] find a list complementing b in such a way that ... is O(n^2) Is there more efficient 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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477 views

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python - How to fix ImportError: No module named packages.urllib3?

I'm running Python 2.7.6 on an Ubuntu machine. When I run twill-sh (Twill is a browser used for testing ... fine. What could be the reason? See Question&Answers more detail:os...

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

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361 views

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python - Pandas: get multiindex level as series

I have a dataframe with multiple levels, eg: idx = pd.MultiIndex.from_product((['foo', 'bar'], [ ... luck searching the stackoverflow archives. See Question&Answers more detail:os...

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

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