Recent questions tagged Python

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python - matplotlib add rectangle to Figure not to Axes

I need to add a semi transparent skin over my matplotlib figure. I was thinking about adding a rectangle to the ... is there any turn around ? 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 - Activating conda environment with its full path

Usually, we activate a conda environment with the command: source activate env_name Is it possible to activate conda ... e the root environment. 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 2.7 - import error; no module named Quandl

I am am trying to run the Quandl module on a virtualenv which I have uninstalled packages only pandas and then ... what might be wrong? 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 - Elegant pythonic cumsum

What would be an elegant and pythonic way to implement cumsum? Alternatively - if there'a already a built-in way ... even better of course... 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 - How to sort queryset by number of character in a field

MyModel: name = models.CharField(max_length=255) I try to sort the queryset. I just think about this: obj = MyModel. ... name)) #??? Any idea? 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 - Timestamp fields in django

I have a MySQL database, right now I'm generating all of the datetime fields as models.DateTimeField. Is there a ... django doesn't have 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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487 views

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python - Combine two context managers into one

I use Python 2.7 and I know that I can write this: with A() as a, B() as b: do_something() I ... no clue how to write this convenience helper 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 would cause WordNetCorpusReader to have no attribute LazyCorpusLoader?

I've got a short function to check whether a word is a real word by comparing it to the WordNet corpus from ... == '__main__': process_meta(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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python - How to format variable number of arguments into a string?

We know that formatting one argument can be done using one %s in a string: >>> "Hello %s" % "world" ... Hello JohnJoeMary" Thanks for your help! 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 - Get last exception in pdb

Is there a way to examine the last exception when in pdb/before entering pdb? (Using python 2.7.5). ... exception before I modify the code. See Question&Answers more detail:os...

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

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491 views

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python - Making io.BufferedReader from sys.stdin in Python2

How can I make a BufferedReader object from a standard file object, like sys.stdin or what you get from 'open'? ... , mode='rb', closefd=False) See Question&Answers more detail:os...

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

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463 views

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python - How can I explode a tuple so that it can be passed as a parameter list?

Let's say I have a method definition like this: def myMethod(a, b, c, d, e) Then, I have a ... each tuple member individually if possible... 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 - Difference between plt.show and cv2.imshow?

Why is there a difference in the output image when calling the same image using plt.show & cv2.imshow()? Here ... required with the plt.show()? See Question&Answers more detail:os...

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

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531 views

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python - Cannot import name '_gi'

I'm trying to add a repository to ppa with the add-apt-repository commands but the _gi module from Python is ... works. Thanks for the help ! 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 - Insert element into numpy array

Lists have a very simple method to insert elements: a = [1,2,3,4] a.insert(2,66) print a [1, 2 ... there an insert equivalent for numpy arrays? See Question&Answers more detail:os...

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

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599 views

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python 3.x - Async fixtures with pytest

How do I define async fixtures and use them in async tests? The following code, all in the same file, fails ... Many thanks for your kind help See Question&Answers more detail:os...

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

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444 views

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python - Hiding raw_input() password input

I want to hide my password but I don't know how. I have seen show="*" and also getpass but I don't know ... ") import time time.sleep(1) exit() See Question&Answers more detail:os...

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

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266 views

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python - Pydev Code Completion for everything

In many cases (such as function parameters) Pydev doesn't statically know the type of a variable. Therefore code ... hint the type is annoying. See Question&Answers more detail:os...

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

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380 views

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python - How do you filter a string such that only characters in your list are returned?

Imagine a string, like 'Agh#$%#%2341- -!zdrkfd' and I only wish to perform some operating on it such that ... hitting another for loop there? See Question&Answers more detail:os...

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

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679 views

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python - Read HDF5 file into numpy array

I have the following code to read a hdf5 file as a numpy array: hf = h5py.File('path/to/file', 'r') ... to view the data stored in 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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336 views

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python - Programmatically Download Content from Shared Dropbox Folder Links

I'm building an application to automatically trigger a download of a Dropbox file shared with a user (shared ... more reliable and efficient. See Question&Answers more detail:os...

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

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294 views

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python - When to use return (yield something)?

For a long time I didn't know you can't put return in front of a yield statement. But actually you ... syntactic sugar. Am I missing something? See Question&Answers more detail:os...

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

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369 views

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python - How is the R2 value in Scikit learn calculated?

The R^2 value returned by scikit learn (metrics.r2_score()) can be negative. The docs say: "Unlike most ... differences. I really have no idea See Question&Answers more detail:os...

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

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680 views

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python - Jupyter notebook: TypeError: __init__() got an unexpected keyword argument 'io_loop'

I recently installed jupyter notebooks on my macbook pro. When I create a new notebook, I see the following ... how I can resolve 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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511 views

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python - django error 'too many values to unpack'

I'm learning Django by building a simple recipes app. I have a 1 table model using the 'choices' field ... .TextField(null=True, blank=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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268 views

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python - Is making in-place operations return the object a bad idea?

I'm talking mostly about Python here, but I suppose this probably holds for most languages. If I have a mutable ... . For example, list.sort. See Question&Answers more detail:os...

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

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306 views

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python - Is there a query method or similar for pandas Series (pandas.Series.query())?

The pandas.DataFrame.query() method is of great usage for (pre/post)-filtering data when loading or plotting. It ... out of my dilemma! 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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514 views

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python - Django : What is the role of ModelState?

Sorry for not being this as programming question, but this caught my eye when I was trying to introspect my ... _state and what ModelState does? See Question&Answers more detail:os...

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

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