Recent questions tagged PYTHON

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python - Linear programming with scipy.optimize.linprog

I've just check the simple linear programming problem with scipy.optimize.linprog: 1*x[1] + 2x[2] -> max 1* ... , why I got this strange result? 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 can I save the same form more than once in Django 1.8?

I have a model Product and a corresponding form Product and I need to update the stock with lets say 5 product, ... can I achieve what I need? See Question&Answers more detail:os...

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

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287 views

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python - How to save application settings in a config file?

I am developing a program that has a settings window in which I can change various parameters for my program. ... I achieve this in 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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383 views

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python - How to include constraint to Scipy NNLS function solution so that it sums to 1

I have the following code to solve non-negative least square. Using scipy.nnls. import numpy as np from scipy.optimize ... . How can I 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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python - SQLAlchemy - Self referential Many-to-many relationship with extra column

I have a model representing user and I want to create a relationship between users representing that they are ... value there somehow? 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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530 views

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python - Scatter Plot 3D with labels and spheres

I am trying to make a scatter plot with some data points (x,y,z,radius) and this is my result up to now: ... instead of areas in this 3D-plot? 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 - Matplotlib - color under curve based on spectral color

I would like to make a plot of of a spectrum, where the area under the curve will be shaded according the the ... png', dpi=200) 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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python - creating a temporary table from a query using sqlalchemy orm

I can create a temporary table this way: session.execute("CREATE TABLE temptable SELECT existingtable.id, " " ... plain SQL version above? See Question&Answers more detail:os...

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

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316 views

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python - Selenium/PhantomJS raises error

I'm trying to run PhantomJS driver in Python but I'm getting error. I've read that I should pass the whole ... you know what am I doing wrong? See Question&Answers more detail:os...

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

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631 views

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python - Statsmodels: Calculate fitted values and R squared

I am running a regression as follows (df is a pandas dataframe): import statsmodels.api as sm est = sm.OLS( ... have values of 48084, 35495. See Question&Answers more detail:os...

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

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355 views

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python - Bottle file upload and process

I am using Bottle for uploading rather large files. The idea is that when the file is uploaded, the web app ... to an existing file directly? 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 - Creating Probability/Frequency Axis Grid (Irregularly Spaced) with Matplotlib

I'm trying to create a frequency curve plot, and I'm having trouble manipulating the axis to get the plot ... this kind of axis formatting. See Question&Answers more detail:os...

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

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386 views

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python - Why is matplotlib plot produced from ipython notebook slightly different from terminal version?

I have a strange issue. Using IPython Notebook, I created a quite extensive script using pandas and matplotlib to ... reports ipython 0.13.1 See Question&Answers more detail:os...

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

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305 views

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python inserting and retrieving binary data into mysql

I'm using the MySQLdb package for interacting with MySQL. I'm having trouble getting the proper type conversions ... mysqlclient. Thanks Alot!@ See Question&Answers more detail:os...

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

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499 views

1 answer

python - Drop duplicates keeping the row with the highest value in another column

a = [['John', 'Mary', 'John'], [10,22,50]]) df1 = pd.DataFrame(a, columns=['Name', 'Count'] ... entries that seems like a terrible solution. :D See Question&Answers more detail:os...

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

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534 views

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python - Min-max normalisation of a NumPy array

I have the following numpy array: foo = np.array([[0.0, 10.0], [0.13216, 12.11837], [0.25379, 42.05027], [0. ... [ 0.25379 1 ] [ 0.30874 0.097]] See Question&Answers more detail:os...

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

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452 views

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python - TensorFlow - Read video frames from TFRecords file

TLDR; my question is on how to load compressed video frames from TFRecords. I am setting up a data ... TFRecord files would be 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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195 views

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python - Overriding nested JSON encoding of inherited default supported objects like dict, list

I've set up some classes of my own that are subclassed from a dictionary to act like them. Yet when I want ... process by the 'default' method. See Question&Answers more detail:os...

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

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301 views

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python - delete U+200B zero-width space characters using sublime text 3

How can I make U+200B character or delete them in using sublime text 3. I found http://pastebin.com/ehWxNfMe but I am not sure how to use 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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383 views

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python 3.x - Keras (TensorFlow, CPU): Training Sequential models in loop eats memory

I am trying to train 1000x of Sequential models in a loop. In every loop my program leaks memory until I run out and ... .2.2) tensorflow(1.0.0) See Question&Answers more detail:os...

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

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273 views

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python - In Tensorflow, what is the difference between a Variable and a Tensor?

The Tensorflow documentation states that a Variable can be used any place a Tensor can be used, and they seem to ... I use one over the other? See Question&Answers more detail:os...

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

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299 views

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python - How to process GET Query String with Flask

How do I process a long GET request with Flask? Is is possible to get a dictionary all the params? Here is the ... ) else: return 'Hello World!' See Question&Answers more detail:os...

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

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352 views

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python - Appending Column to Frame of HDF File in Pandas

I am working with a large dataset in CSV format. I am trying to process the data column-by-column, then append ... ways to work with this 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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319 views

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python - In Tkinter how do i remove focus from a widget?

I'd like to remove focus from a widget manually. 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 - Trained Machine Learning model is too big

We have trained an Extra Tree model for some regression task. Our model consists of 3 extra trees, each ... or any alternative for pickle? 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

1 answer

python - What is the correct way to replace matplotlib tick labels with computed values?

I have a figure with a log axis and I would like to relabel the axis ticks with logs of the values, ... computed from the original tick 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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200 views

1 answer

python - Session generation from log file analysis with pandas

I'm analysing a Apache log file and I have imported it in to a pandas dataframe. '65.55.52.118 - - [30/ ... : 31975, Freq: None, Timezone: 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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1.2k views

1 answer

python - ValueError: not enough values to unpack (expected 4, got 1)

from sys import argv script, first, second, third = argv print("The script is called: ", script) print("The first ... how to fix it. 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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