Recent questions tagged Python

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python - graph.write_pdf("iris.pdf") AttributeError: 'list' object has no attribute 'write_pdf'

My code is follow the class of machine learning of google.The two code are same.I don't know why it show ... )) graph.write_pdf("iris.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 - Inner Classes: How can I get the outer-class object at construction time?

Consider the following Python (runs in 2.x or 3.x): class Outer(object): pass class Inner(object): def ... depravity I'm willing to consider. 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 PyPy on Windows?

I was wondering how to use PyPy 1.8 on Windows XP 32-bit. I downloaded the zip file off the website ... that was equivalent. Thanks everyone. See Question&Answers more detail:os...

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

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290 views

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python - Django switching, for a block of code, switch the language so translations are done in one language

I have a django project that uses a worker process that sends emails to users. The worker processes listens to ... will use that language 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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python - Using a Django variable in a CSS file

I am trying to create a dynamic CSS file using the Django templating engine or any other means. Currently, I ... ) to generate CSS dynamically? 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 - NLTK - Counting Frequency of Bigram

This is a Python and NLTK newbie question. I want to find frequency of bigrams which occur more than 10 times ... only the top 20. 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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python - Improving Numpy Performance

I'd like to improve the performance of convolution using python, and was hoping for some insight on how to best ... loop in C over using Numpy. 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 initial value to modelform in class based generic views

I'm using Class based generic views, can anybody suggest me how can i set the initial values to update form? I ... ', args=[self.object.id]) See Question&Answers more detail:os...

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

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332 views

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python - Django - Site matching query does not exist

Im trying to get the admin site of my app in Django working. Ive just sync`d the DB and then gone to the ... query does not exist. 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 - How to set weights in Keras with a numpy array?

I am having trouble with the Keras backend functions for setting values. I am trying to convert a model from ... a numpy array of values? See Question&Answers more detail:os...

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

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291 views

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python - Aptana Error-pydev: Port not bound (found port -1)?

I just updated my Aptana Studio3. When I open my python file it says that it can not find map, range and ... solution. I'm using windows 7. See Question&Answers more detail:os...

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

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295 views

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python - Color values in imshow for matplotlib?

I'd like to know the color value of a point I click on when I use imshow() in matplotlib. Is there ... interpolation='nearest') Thanks! --Erin See Question&Answers more detail:os...

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

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367 views

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python - Django form.as_p DateField not showing input type as date

Working on my first django app, and I have a model defined with some DateFields, and then a ModelForm off of ... there a way to change 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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143 views

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python - Is there a way to create/modify connections through Airflow API

Going through Admin -> Connections, we have the ability to create/modify a connection's params, but I'm ... docs for this specific function. See Question&Answers more detail:os...

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

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210 views

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python - gcc error trying to install PIL in a Python2.6 virtualenv

I have created a virtualenv with the --no-site-packages option. I get an error trying to install PIL: http:// ... running Ubuntu 10.04 (64 bit) 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 - How do I get the value of a tensor in PyTorch?

Printing the tensor gives: >>> x = torch.tensor([3]) >>> print(x) tensor([3]) Likewise indexing its .data ... How do I get just the value 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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338 views

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python - pandas read_csv index_col=None not working with delimiters at the end of each line

I am going through the 'Python for Data Analysis' book and having trouble in the 'Example: 2012 Federal ... for any inconvenience. 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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259 views

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python - How do you remove the column name row when exporting a pandas DataFrame?

Say I import the following Excel spreadsheet into a dataframe: Val1 Val2 Val3 1 2 3 5 6 7 9 1 2 How ... have not been successful with either. See Question&Answers more detail:os...

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

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255 views

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python - Package for listing version of packages used in a Jupyter notebook

I seem to remember there is a package that printed the versions and relevant information about Python packages used ... ? 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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183 views

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python - How do I unit test a module that relies on urllib2?

I've got a piece of code that I can't figure out how to unit test! The module pulls content from external XML ... I write a unit test 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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433 views

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python - Merge two arrays vertically to array of tuples using numpy

I have two numpy arrays: x = np.array([-1, 0, 1, 2]) y = np.array([-2, -1, 0, 1]) Is there a way to merge these ... , (0, -1), (1, 0), (2, 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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408 views

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python - Matrix inversion without Numpy

I want to invert a matrix without using numpy.linalg.inv. The reason is that I am using Numba to speed up the code ... ) Minv = np.linalg.inv(M) 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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I am interrested in knowing the recommended way to install pip3 for python3.6 (as of today, may 2018) on current ... to current 3.6.3) ? See Question&Answers more detail:os...

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

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472 views

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python - List unhashable, but tuple hashable?

In How to hash lists? I was told that I should convert to a tuple first, e.g. [1,2,3,4,5 ... technical explanation, but rather for an intuition See Question&Answers more detail:os...

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

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139 views

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python - mysql error : ERROR 1018 (HY000): Can't read dir of '.' (errno: 13)

when i try to view the databases in mysql i get this error: ERROR 1018 (HY000): Can't read dir of ' ... can cause the problem? 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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226 views

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python - Class factory to produce simple struct-like classes?

While investigating Ruby I came across this to create a simple Struct-like class: Person = Struct.new(:forname, ... Python mechanism 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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502 views

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python - What is the difference between ProcessPoolExecutor and ThreadPoolExecutor?

I read the docs trying to get a basic understanding but it only shows that ProcessPoolExecutor allows to side- ... while using each approach! See Question&Answers more detail:os...

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

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271 views

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python - django can't find new sqlite version? (SQLite 3.8.3 or later is required (found 3.7.17))

I've cloned a django project to a Centos 7 vps and I'm trying to run it now, but I get this error ... to linux and would appreciate any 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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