Recent questions tagged Python

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python - Pandas groupby how to compute counts in ranges

Say I have a huge list of numbers between 0 and 100. I compute ranges, depending on the max number and then ... .g. pandas.groupby, and 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 - Differences between generator comprehension expressions

There are, as far as I know, three ways to create a generator through a comprehension1. The classical one: def f1 ... try and call type on them. 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 - There is a way to add features to an existing django command?

I want to run a command just before the a django command is started. For example: $ python manage.py ... without hacking the django sources? 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 - pip install returning invalid syntax

I've just installed python 3.6 which comes with pip However, in Windows command prompt, when I do: 'pip install ... . What could be the 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 - How can I import a package using __import__() when the package name is only known at runtime?

I have a messages folder(package) with __init__.py file and another module messages_en.py inside it. In __init__. ... of saying __import__('x') 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 convert a numpy array into a pandas dataframe?

I would like to have the 3 columns of a numpy array px[:,:,0] px[:,:,1] px[:,:,0] into a pandas Dataframe. ... R', 'G', 'B']) Thank you Hugo 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 - Retrieving contents from a directory on a network drive (windows)

I'm have an issue about displaying the files from a network drive on Windows. path = "\\nexus\File Server ... contain at maximum five zip files. 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 - Text alignment in a Matplotlib legend

I am trying to right-align the entries in a matplotlib axes legend (by default they are left-aligned), but can't ... : 14-OCT-2011 06:00 UTC 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 raise a ValidationError (or do something similar) in views.py of my Django?

I'm using Django forms. I'm validating in the model layer: def clean_title(self): title = self.cleaned_data[' ... be more than 5 characters.") 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 mock a decorated function

For testing reasons, I need to be able to mock the inner/original function of a decorated one which is used ... but this doesn't help me. See Question&Answers more detail:os...

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

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324 views

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python - Selenium webdriver and unicode

It's my 2nd day with Selenium 2 library and the pain with Unicode never seem to subside. I'm just doing the ... please encode this to utf-8 ? See Question&Answers more detail:os...

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

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476 views

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python - Django unique together constraint failure?

Using Django 1.5.1. Python 2.7.3. I wanted to do a unique together constraint with a foreign key ... but also maintains the unique constraint? 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 - "ValueError: embedded null character" when using open()

I am taking python at my college and I am stuck with my current assignment. We are supposed to take 2 files ... () What does this error mean? See Question&Answers more detail:os...

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

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383 views

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python - Difference between TypeVar('T', A, B) and TypeVar('T', bound=Union[A, B])

I'm struggling to get my head around the difference between the following two TypeVars: from typing import TypeVar, Union class ... ("T", A, B). 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 - Automatic detection of display availability with matplotlib

I'm generating matplotlib figures in a script which I run alternatively with or without a graphical display. I' ... for matplotlib or not? See Question&Answers more detail:os...

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

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561 views

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python - turn off axis border for polar matplotlib plot

I have a polar axes in matplotlib that has text which extends outside of the range of the axes. I would like to ... # ... draw lots of things 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 script to concatenate all the files in the directory into one file

I have written the following script to concatenate all the files in the directory into one single file. Can this be ... line) outfile.write(" ") See Question&Answers more detail:os...

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

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573 views

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python - tkinter gui with progress bar

I have a simple TK gui and a long process in a function attached to a button and I want a progress bar when ... put a progress bar in that app? See Question&Answers more detail:os...

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

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360 views

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python - Any way to write files DIRECTLY to S3 using boto3?

I wrote a python script to process very large files (few TB in total), which I'll run on an EC2 instance ... first saving the object onto disk. See Question&Answers more detail:os...

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

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276 views

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python - Passing variable urlname to url tag in django template

What I'd like to do (for a recent changes 'widget' - not a django widget in this case) is pass a urlname ... thought I'd check though. 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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1.1k views

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python - Colorbar limits are not respecting set vmin/vmax in plt.contourf. How can I more explicitly set the colorbar limits?

Getting a strange result when trying to adjust the data range when plotting using contourf import matplotlib import numpy as ... from 0 to 3. See Question&Answers more detail:os...

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

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384 views

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python - How to identify the subject of a sentence?

Can Python + NLTK be used to identify the subject of a sentence? From what I have learned till now is that a ... subject in this sentence is I. See Question&Answers more detail:os...

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

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757 views

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python - Module not found error in PyCharm , but it is installed as Anaconda package

I have installed Anaconda 3 and PyCharm CE after that. I am able to chose the interpreter to be Conda environment. ... it does not show up. See Question&Answers more detail:os...

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

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298 views

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python - Using argparse to parse arguments of form "arg= val"

I want to use argparse to parse command lines of form "arg=val" For example, the usage would be: script.py ... to parse args in this 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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256 views

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python - Unable to start Airflow worker/flower and need clarification on Airflow architecture to confirm that the installation is correct

Running a worker on a different machine results in errors specified below. I have followed the configuration ... I diagnose this further? See Question&Answers more detail:os...

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

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511 views

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python - How to change pip installation path

I am using Mac. My pip installation path is /Library/Python/2.7/site-packages. How do I change ... correctly installing packages are 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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625 views

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python - django rest framework hide specific fields in list display?

I want to hide specific fields of a model on the list display at persons/ and show all the fields on the ... it works for person/pk Thank you See Question&Answers more detail:os...

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

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1.0k views

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python - Pandas' equivalent of resample for integer index

I'm looking for a pandas equivalent of the resample method for a dataframe whose isn't a DatetimeIndex but an ... not smart at all. Cheers See Question&Answers more detail:os...

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

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