Recent questions tagged Python

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python - Is it possible to get a legit range info when using a SMT constraint with Z3

So basically I am trying to solve the following SMT constraint with a generic constraint solver like Z3: > ... a satisfiable constraint? 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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721 views

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python - TensorFlow: critical graph operations assigned to cpu rather than gpu

I have implemented a TensorFlow DNN model (2 hidden layers with elu activation functions trained on MNIST) as ... would be really appreciated. 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 - Extracting hidden values from a form with beautifulsoup

I'm trying to parse a page HTML response which is the following (no proper HTML page formatting head/body. ... " value="user_login_block" /> 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 - AttributeError: 'NoneType' object has no attribute 'delete'

I have run into this issue and I can't understand why. I took my code from my application and made this test ... column=0) tk.mainloop() main() See Question&Answers more detail:os...

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

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712 views

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python - Fit a dataframe into randomForest pyspark

I have a DataFrame that looks like this: +--------------------+------------------+ | features| ... Does any one have any idea How to do so ? See Question&Answers more detail:os...

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

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806 views

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python - Convert two columns Pandas data frame to dictionary of list with first column as keys

I have the following data frame: import pandas as pd df = pd.DataFrame({ "ClusterID" : [1,2,2,1,3], "Genes" : [ ... ['fii']} How can I do that? See Question&Answers more detail:os...

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

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876 views

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python - PyQt4 Need to move DLLs to package root

I've used the new installers from http://www.riverbankcomputing.co.uk/software/pyqt/download for Python 2.6 x86_64 ... etc) 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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833 views

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python - How to serve Google Cloud Storage images?

I want google.appengine.ext.blobstore and google.appengine.api.images to work outside of App Engine. Do these ... Cloud Storage with Django? See Question&Answers more detail:os...

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

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744 views

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python - What is the use of numpy.random.seed() Does it make any difference?

I have a dataset named "admissions". I am trying to carry out holdout validation on a simple dataset. In ... np.random.seed(number)represent? See Question&Answers more detail:os...

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

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786 views

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python - Numpy-vectorized function to repeat blocks of consecutive elements

Numpy has а repeat function, that repeats each element of the array a given (per element) number of times. I want ... this possible? If so, 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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823 views

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python 3.x - How do I pass a rect into pygame.display.update() to update a specific area of the window?

On the documentation page for pygame.display.update(), it says you can pass a rect into the method to ... this updates the entire window. See Question&Answers more detail:os...

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

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904 views

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python - Access to 3D array in fragment shader

I'm trying to provide access to a 3-dimensional array of scalar data to a fragment shader, from a ... being translated into Python exceptions. See Question&Answers more detail:os...

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

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685 views

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python - searching sorted items into a sorted sequence

I want to find a sequence of items in a sorted array of values. I know that with numpy I can do: l = ... to "vectorize" this loop with 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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917 views

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python - easy_install libmysqld-dev error :'NoneType' object has no attribute 'clone'

this is the error : (mysite)zjm1126@zjm1126-G41MT-S2:~/zjm_test/mysite$ ./bin/easy_install libmysqld-dev Searching for ... can i do, 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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781 views

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python 2.7 - Subtract a vector to each row of a dataframe

My dataframe looks like this : fruits = pd.DataFrame({'orange': [10, 20], 'apple': [30, 40], 'banana': [50, 60 ... ? I don't want to use a 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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963 views

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python - Datetime milliseconds to seconds in Pandas

Have a datetime column in pandas dataframe with values like these: time 2018-04-11 22:18:30.122 2018-04-11 23:00: ... 18:00 2018-04-11 23:00:00 See Question&Answers more detail:os...

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

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1.6k views

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python - How to fix 'Incomplete wav chunk' error when reading wav with scipy

My problem I'm trying to fit a (machine-learning) model that takes in an audiofile (.wav) and predicts the ... file: Codec of the BAD file: See Question&Answers more detail:os...

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

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794 views

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python - Changing element value with BeautifulSoup returns empty element

from BeautifulSoup import BeautifulStoneSoup xml_data = """ <doc> <test>test</test> <foo:bar>Hello world!</foo:bar ... of both HTML and XML! See Question&Answers more detail:os...

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

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826 views

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python - Convert datetime to another format without changing dtype

I'm just learning Pandas myself and I have met few problems. In a DataFrame, which it was reads from a csv ... , not keeping the datetime dtype. See Question&Answers more detail:os...

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

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729 views

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python - Convert list of lists to list of dictionaries

I want to convert a list of lists to a list of dictionaries. I have a way to do it but I suspect there's a ... , but I'm not quite sure 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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902 views

1 answer

python - How to avoid duplicate outputs using logging module

I am using the logging module to output what used to be print statements in my script to both the console and a ... == '__main__': main() See Question&Answers more detail:os...

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

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946 views

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python regex negative lookahead

when I use negative lookahead on this string 1pt 22px 3em 4px like this /d+(?!px)/g i get this result (1, 2 ... don't know how should I do that See Question&Answers more detail:os...

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

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789 views

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python - Cron works on local host but not when deployed Appengine

I have a cron job in python that works on my localhost but when it is deployed to appengine, it no longer works. ... any way I can fix 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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1.6k views

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python - making colorbar with scientific notation in seaborn

I am plotting the following heatmap in seaborn. the dataframe is read from the foll. csv file: ... ax.yaxis.set_major_formatter(formatter) See Question&Answers more detail:os...

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

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682 views

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python - Return equivalent of `:` from function for indexing array

I have a large array and a function that returns index lists into the array, i.e., import numpy n = 500 a ... as an index for the entire array? See Question&Answers more detail:os...

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

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928 views

1 answer

python - Setting a descriptor in python3.5 asynchronously

I can write a descriptor returning a future which could be awaited on. class AsyncDescriptor: def __get__(self, ... '__set__' was never awaited See Question&Answers more detail:os...

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

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959 views

1 answer

python - In 2D binary matrix find the number of islands

I am trying to count the number of islands (a group of connected 1s forms an island) in a 2D binary matrix. ... find out where is 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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1.2k views

1 answer

python - Pandas: groupby ffill for multiple columns

I have the following DataFrame with some missing values. I want to use ffill() to fill missing values in both ... must be same length as 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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