Recent questions tagged Python

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python - python27 matplotlib: first and last element connected

Hi I have found the same problem but without an answer: enter link description here My problem is that I try ... please help me. Cheers Max 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 arrange plots of secondary axis to be below plots of primary axis in matplotlib?

I am trying to plot two curves on two y-axes as shown in figure. But the green plot (needle lift) ... .LinearLocator(primary_ticks)) 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 - Fast(er) numpy fancy indexing and reduction?

I'm trying to use and accelerate fancy indexing to "join" two arrays and sum over one of results' axis. ... .weave or Cython's prange ? 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: Could not find PyAudio; check installation...can't use speech Recognition

I'm trying to make a basic speech Recognition assistant. When I run the code, it tells me: Traceback (most recent call ... get that...") hear() 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 - Variable Scope In Generators In Classes

I think that I know how variables and generators work in Python well. However, the following code makes me confused. ... is it wrong in class? 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 - SSLError installing with pip

I'm trying to install Django on a windows 10 . Whatever I try to install with pip on cmd, I get those ... .org --trusted-host pypi.org 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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python - Skimage - Weird results of resize function

I am trying to resize a .jpg image with skimage.transform.resize function. Function returns me weird result ( ... function has similar bug. 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 simple echo in subprocess not working

I'm trying to perform simple echo operation using subprocess: import subprocess import shlex cmd = 'echo $HOME' ... . Any help is 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 shuffle algorithm performance

I was wondering about the time complexity of the shuffle function in the random Python library/module. Is it ... belong to Python libraries? 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 - Where can I find a list of numpy functions which release the GIL?

I have found several SO questions asking about this in one way or another, but none of them actually either ... read the numpy source. Really? See Question&Answers more detail:os...

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

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293 views

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python - How to remove the date information in a column, just keep time

I am using pandas dataframe. there is a specific column has time information. the raw data likes this: 5:15am 5: ... can I remove it. 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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314 views

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python - How to store an integer leaded by zeros in django

I'm trying to store a number in django that looks like this: 000001 My problem is that if I type this inside ... number in it's integer form) See Question&Answers more detail:os...

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

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588 views

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python - matplotlib - duplicate plot from one figure to another?

I'm somewhat new to matplotlib. What I'm trying to do is write code that saves several figures to eps ... this would be done with matplotlib. See Question&Answers more detail:os...

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

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265 views

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python - Convert a numpy array of lists to a numpy array

I have some data which is stored as a numpy array with dtype=object, and I would like to extract one column of ... a better way 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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python - Difference between pip3 and `python3 setup.py install` regarding cmdclass argument

I tried to configure my package such that a script is executed on the installation process. Therefore, I inherited ... to hear from you guys. See Question&Answers more detail:os...

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

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401 views

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python - How are Inf and NaN implemented?

As mathematical concepts, I am well aware of what inf and nan actually are. But what I am really interested in is how ... that of java or 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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429 views

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python - Tensorflow negative sampling

I am trying to follow the udacity tutorial on tensorflow where I came across the following two lines for ... /examples/udacity/5_word2vec.ipynb See Question&Answers more detail:os...

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

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494 views

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python - Turning a Large Matrix into a Grayscale Image

I have a NumPy array of 3,076,568 binary values (1s and 0s). I would like to convert this to a ... advice would be appreciated. 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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323 views

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python - set ipython's default scientific notation threshold

How can I modify the point at which python decides to print in scientific notation? E.g. I'd like everything > ... : 5e10 Out[12]: 50000000000.0 See Question&Answers more detail:os...

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

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python - Get diagonal without using numpy?

I'm trying to get the diagonal from a matrix in Python without using numpy (I really can't use it). Does ... from right-> left, top->bottom. 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 - Rasterizing multiple elements in matplotlib

I'm having problems when rasterizing many lines in a plot using the rasterized=True keyword using the pdf output ... be greatly reduced? 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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410 views

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python - AWS Lambda read contents of file in zip uploaded as source code

I have two files: MyLambdaFunction.py config.json I zip those two together to create MyLambdaFunction.zip. I then ... file with the source 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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315 views

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python - KeyError when adding objects to SQLAlchemy association object

I have two tables, tablet and correspondent: class Correspondent(db.Model, GlyphMixin): # PK column and ... something fairly elementary here. See Question&Answers more detail:os...

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

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458 views

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python - ImportError No module named pyaudio

I am writing a program in Python on RaspberryPi, But I am getting an error ImportError No module named ... I install PyAudio in RaspberryPi See Question&Answers more detail:os...

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

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390 views

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python - Dumping numpy array into an excel file

I am trying to dump numpy array into an excel file using savetxt method, but I am getting this weird error ... any help will 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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586 views

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python - Filling a 2D matrix in numpy using a for loop

I'm a Matlab user trying to switch to Python. Using Numpy, how do I fill in a matrix inside a for loop? For example, the ... ) = [3*i, i^2]; end See Question&Answers more detail:os...

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

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377 views

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python - Running `airflow scheduler` launches 33 scheduler processes

When using LocalExecutor with a MySQL backend, running airflow scheduler on my Centos 6 box creates 33 scheduler ... returned. Is this normal? See Question&Answers more detail:os...

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

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297 views

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python - Pandas: timestamp to datetime

I have dataframe and column with dates looks like date 1476329529 1476329530 1476329803 1476329805 1476329805 1476329805 ... did anything 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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