Recent questions tagged Python

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python - Nested Json to pandas DataFrame with specific format

i need to format the contents of a Json file in a certain format in a pandas DataFrame so that i can run ... appreciated. Thank you 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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342 views

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python - Reset a column's MultiIndex levels

Is there a shorter way of dropping a column MultiIndex level (in my case, basic_amt) except transposing it twice? In [ ... 1 Part Time 1 0 2 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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226 views

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python - Pythonic way to create a numpy array from a list of numpy arrays

I generate a list of one dimensional numpy arrays in a loop and later convert this list to a 2d numpy array. ... application I have a for loop 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 Query using .order_by() and .latest()

I have a model: class MyModel(models.Model): creation_date = models.DateTimeField(auto_now_add = True, editable=False ... order_by in the query? 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 F expressions joined field

So I am trying to update my model by running the following: FooBar.objects.filter(something=True).update(foobar= ... is much faster than 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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157 views

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python - Add quotes to every list element

I'm very new to python. I need a simple and clear script to add quotes to every list elements. Let me ... to add quotes while joining elements. 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 - os.getenv and os.environ don't see environment variables of my bash shell

I am on ubuntu 13.04, bash, python2.7.4 The interpreter doesn't see variables I set. Here is an example: ... print os.getenv("PYTHONPATH")' None 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 run uwsgi with virtualenv

I'm currently developing my first real python flask project and am about to set up the build server to deploy the ... not in the nginx config. 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 - Create hourly/minutely time range using pandas

Is there a way to generate time range in pandas similar to date_range? something like: pandas.time_range("11:00", "21:30", freq="30min") See Question&Answers more detail:os...

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

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284 views

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python arbitrarily incrementing an iterator inside a loop

I am probably going about this in the wrong manner, but I was wondering how to handle this in python. ... another module. 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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193 views

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python - How to remove pip package after deleting it manually

I deleted a pip package with rm -rf command thinking that the package will be removed. Now the package has ... from the same directory. TIA See Question&Answers more detail:os...

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

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391 views

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python - Difference between scikit-learn and sklearn

On OS X 10.11.6 and python 2.7.10 I need to import from sklearn manifold. I have numpy 1.8 Orc1, ... scikit-learn because of a syntax error See Question&Answers more detail:os...

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

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227 views

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python - How to get matplotlib figure size

For a project, I need to know the current size (in pixels) of my matplotlib figure, but I can't find how to ... anyone know how to 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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540 views

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python - How to get column names from SQLAlchemy result (declarative syntax)

I am working in a pyramid project and I've the table in SQLAlchemy in declarative syntax """models.py""" ... I am using the declarative syntax. See Question&Answers more detail:os...

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

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250 views

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python - Sort pandas dataframe both on values of a column and index?

Is it feasible to sort pandas dataframe by values of a column, but also by index? If you sort a pandas dataframe ... and efficient way to do it? See Question&Answers more detail:os...

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

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461 views

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python - selecting attribute values from lxml

I want to use an xpath expression to get the value of an attribute. I expected the following to work from lxml ... wrong to expect this to 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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402 views

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python - error: could not create '/usr/local/lib/python2.7/dist-packages/virtualenv_support': Permission denied

I am using ubuntu 12.04 and I am trying to pip install virtualenv but suddenly I got this error. samuel@sampc:~$ ... have an idea about my case? See Question&Answers more detail:os...

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

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202 views

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python - How do I correctly install dulwich to get hg-git working on Windows?

I'm trying to use the hg-git Mercurial extension on Windows (Windows 7 64-bit, to be specific). I have ... can I do with that information? See Question&Answers more detail:os...

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

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314 views

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python - Plotly chart not showing in Jupyter notebook

I have been trying to solve this issue for hours. I followed the steps on the Plotly website and ... , iplot init_notebook_mode(connected=True) 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 - How do I get the file / key size in boto S3?

There must be an easy way to get the file size (key size) without pulling over a whole file. I can ... solutions, or pointers to examples. See Question&Answers more detail:os...

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

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467 views

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python - Cleaning build directory in setup.py

How could I make my setup.py pre-delete and post-delete the build directory? See Question&Answers more detail:os...

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

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914 views

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python - How many bytes does a string have

Is there some function which will tell me how many bytes does a string occupy in memory? I need to set a ... transfer the whole string at 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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393 views

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python - Django package to generate random alphanumeric string

I'm building an app that has a separated front-end (Angular or some other JS library) and backend (Django) ... to generate and test myself. See Question&Answers more detail:os...

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

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164 views

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python - When should I use a Map instead of a For Loop?

This is relating to the following: (In Python Code) for i in object: doSomething(i) versus map(doSomething, ... on your institution. 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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232 views

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python - Best output type and encoding practices for __repr__() functions?

Lately, I've had lots of trouble with __repr__(), format(), and encodings. Should the output of ... respect to these encoding questions? See Question&Answers more detail:os...

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

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490 views

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python - Cannot apply DjangoModelPermissions on a view that does not have `.queryset` property or overrides the `.get_queryset()` method

I am getting the error ".accepted_renderer not set on Response resp api django". I am following the django ... I think its permission 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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371 views

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python - Pandas - Filtering None Values

I'm using Pandas to explore some datasets. I have this dataframe: I want to exclude any row that has a ... idea how to filter this dataframe? See Question&Answers more detail:os...

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

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470 views

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python - What does replacement mean in numpy.random.choice?

Here explains the function numpy.random.choice. However, I am confused about the third parameter replace. What is it? ... it be useful? 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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