Recent questions tagged Python

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python - using gen.task with Tornado for a simple function

Just trying to use the async functions of Tornado - I want to invoke a method from my handler but it ... dosomething(self, myargument): pass 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 - clang: error: unknown argument: '-mno-fused-madd' [-Wunused-command-line-argument-hard-error-in-future]

I get the following error trying to install Scrapy in a Mavericks OS. I have command line tools and ... /.virtualenvs/Parser/build/cryptography 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 - naming a file when downloading with Selenium Webdriver

I see that you can set where to download a file to through Webdriver, as follows: fp = webdriver.FirefoxProfile ... newest_file, docName+".pdf") 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 - Kivy: Get widgets ids and accessing widgets by unique property

I'm new to Kivy and I have this little demo snippet that demonstrates my problem: from kivy.app import App ... be reliable for such 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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python - Pandas: How to read CSV file from google drive public?

I searched similar questions about reading csv from URL but I could not find a way to read csv file from google ... /0.22/io.html#io-read-html 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 print Specific key value from a dictionary?

fruit = { "banana": 1.00, "apple": 1.53, "kiwi": 2.00, "avocado": 3.23, "mango": 2.33, "pineapple" ... how? print(value[2]) This is not working. 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 I get a MemoryError with itertools.product?

I would expect the following snippet to give me an iterator yielding pairs from the Cartesian product of the two ... 's causing the MemoryError? 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 - py2exe to generate dlls?

Is there a way using py2exe or some other method to generate dll files instead of exe files? I would want to ... in python instead of c++. 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 : using admin datepicker

I'm trying to use the admin datepicker in my own django forms. Roughly following the discussion here : ... starting from a different position) See Question&Answers more detail:os...

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

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589 views

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python - Django: Filter for get_foo_display in a Queryset

I've been trying to filter a queryset on a simple model but with no luck so far. Here is my model: class ... but I guess I'm 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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451 views

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python - Unable to connect aws s3 bucket using boto

AWS_ACCESS_KEY_ID = '<access key>' AWS_SECRET_ACCESS_KEY = '<my secret key>' Bucketname = 'Bucket-name' import boto ... key and secret key. 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 - Example to understand scipy basin hopping optimization function

I came across the basin hopping algorithm in scipy and created a simple problem to understand how to use it but it ... array([ -1.80746874e+08]) 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 - Creating LaTeX math macros within Sphinx

I'm writing some mathematical code in Python and using Sphinx to produce the documentation. I know that Sphinx ... in the Python docstrings? See Question&Answers more detail:os...

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

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418 views

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python - How much time does take train SVM classifier?

I wrote following code and test it on small data: classif = OneVsRestClassifier(svm.SVC(kernel='rbf')) classif.fit( ... GB Memory, Core i5-480M) 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 - /usr/bin/ld: cannot find -lpython2.7

I'm trying to install MySQLdb with Python 2.7. The error I'm getting looks like this: gcc -pthread -fno- ... advise a remedy to the 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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242 views

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python - ctypes variable length structures

Ever since I read Dave Beazley's post on binary I/O handling (http://dabeaz.blogspot.com/2009/08/python- ... pythonic solution to 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 - Why does naive string concatenation become quadratic above a certain length?

Building a string through repeated string concatenation is an anti-pattern, but I'm still curious why its ... extending small memory blocks. See Question&Answers more detail:os...

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

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418 views

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python - How can I make an animation with contourf()?

I'm trying to animate the wigner function of the spatial coordinates of some time-dependent data. The wigner ... ) equivalent of set_data()? See Question&Answers more detail:os...

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

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414 views

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python - How to check for correlation among continuous and categorical variables?

I have a dataset including categorical variables(binary) and continuous variables. I'm trying to apply a linear ... . Should this 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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245 views

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python - How to execute external script in the Django environment

I am trying to execute an external snippet for debugging and terminal-like purposes in the environment the Django ... or any special tool. See Question&Answers more detail:os...

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

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333 views

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python - Django counter in loop to index list

I'm passing two lists to a template. Normally if I was iterating over a list I would do something like this {% ... to get that to work. 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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231 views

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python - How to append to a CSV file?

Using Python to append CSV file, I get data every other row. How do I fix? import csv LL = [(1,2),(3,4)] Fn = (" ... like this: 1,2 3,4 1,2 3,4 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 - PySide/PyQt - Starting a CPU intensive thread hangs the whole application

I'm trying to do a fairly common thing in my PySide GUI application: I want to delegate some CPU- ... switch my whole application to PyQt4 See Question&Answers more detail:os...

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

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605 views

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python - Pythonic Way to reverse nested dictionaries

I have a nested dictionary of people and item ratings, with people as the key. people may or may not ... it possible with a comprehension? See Question&Answers more detail:os...

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

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337 views

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python - How do I use __getitem__ and __iter__ and return values from a dictionary?

I have an object with a dictionary that I want to access via __getitem__ as well as iterate over (values only, ... the key doesn't matter) ? See Question&Answers more detail:os...

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

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261 views

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python - How to animate a time-ordered sequence of matplotlib plots

I want to plot a sequence of .png images in matplotlib. The goal is to plot them rapidly to simulate the ... t display anything and just hangs. See Question&Answers more detail:os...

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

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199 views

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python - Using pandas to select rows using two different columns from dataframe?

Q is similar to this: use a list of values to select rows from a pandas dataframe I want to dataframe if ... print df[df.one.isin(checkList)] See Question&Answers more detail:os...

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

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349 views

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python - Specify absolute colour for 3D points in MayaVi

I am using the MayaVi Python library to plot 3d points, using the points3d class. The documentation specifies that ... but an error is thrown. See Question&Answers more detail:os...

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

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