Recent questions tagged Python

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python - Flask: How to serve static html?

I am trying to serve a static html file, but returns a 500 error (a copy of editor.html is on .py and ... there is an error in the application. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Fastest method to generate big random string with lower Latin letters

I'm trying to solve this problem from Timus Online Judge. To solve this problem you need generate a sequence of ... still didn't pass the test See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - how to copy numpy array value into higher dimensions

I have a (w,h) np array in 2d. I want to make a 3d dimension that has a value greater than 1 and copy its ... is there a a faster way to do so? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to specify which eth interface Django test server should listen on?

As the title says, in a multiple ethernet interfaces with multiple IP environment, the default Django test server ... connect from localhost. :P See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - NumPy, RuntimeWarning: invalid value encountered in power

I am working with Python 3.6. I am really confused, why this happened ? In [1]: import numpy as np In ... /anaconda/bin/python Out[4]: nan See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Is it possible to get test scores for each iteration of MLPClassifier?

I would like to look at the loss curves for training data and test data side by side. Currently it seems ... data set. Is this available? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - ValueError: Attempted relative import in non-package not for tests package

I know this has been asked many times but somehow I am not able to get over this error. Here is my ... Any help would be really appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - argparse - Combining parent parser, subparsers and default values

I wanted to define different subparsers in a script, with both inheriting options from a common parent, but with different ... 2.7, by the way. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Colormap for errorbars in x-y scatter plot using matplotlib

I have a time series of data for which I have the quantity, y, and its error, yerr. I would now like to ... want to call errorbar 1600 times... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How do I remove the last n characters from a string?

If I have a string and want to remove the last 4 characters of it, how do I do that? So if I want to ... Forest How do I do that? Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - ValueError: day is out of range for month

I want to convert a string from a dataframe to datetime. dfx = df.ix[:,'a'] dfx = pd.to_datetime(dfx) ... of range for month Can anyone help? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Django 1.9 JSONField order_by

I have the following django model that contains JSONField: class RatebookDataEntry(models.Model): data = ... order_by("data__manufacturer_name") See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to force numpy array order to fortran style?

I am using quite a lot of fortran libraries to do some mathematical computation. So all the arrays in numpy ... created is in fortran style? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Import error: you must be root

I'm trying to use the keyboard library in python 3 but continue to get an import error. I ran the program in ... to use this library on linux. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How do i link to images not in Static folder in flask

In flask, how do I serve images that are not in the static folder? I currently save the user uploaded photos ... app directory is the question ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - UnicodeEncodeError: 'ascii' codec can't encode character u'xe4'

I permanently get the following error: UnicodeEncodeError: 'ascii' codec can't encode character u'xe4' in position ... ) However, nothing works. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Are any of these quad-tree libraries any good?

It appears that a certain project of mine will require the use of quad-trees, something that I have ... Entity Navigation Catch the Cootie See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - `pip install pandas` gives UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 41: ordinal not in range(128)

When performing pip install pandas on a Digital Ocean 512MB droplet, I get the error UnicodeDecodeError: 'ascii' codec ... 64bit. [Full Error] See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Can I get a view of a numpy array at specified indexes? (a view from "fancy indexing")

What i need is a way to get "fancy indexing" (y = x[[0, 5, 21]]) to return a view instead of a copy. ... of indices. Is there a way to do this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - matplotlib scatterplot x axis labels

When I'm adding the c option to a scatterplot in matplotlib, the x axis labels dissapear. Here's an ... when called without a jupyter notebook See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - 'super' object not calling __getattr__

I have one object wrapped inside another. The "Wrapper" accesses the attributes from the "Wrapped" object by ... Subclass(a) b.hello_world() See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - import check_arrays from sklearn

I'm trying to use a svm function from the scikit learn package for python but I get the error message: from ... an advice? Thanks in advance. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Numpy modify ndarray diagonal

is there any way in numpy to get a reference to the array diagonal? I want my array diagonal to be divided by a certain factor Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - TensorFlow: How to handle void labeled data in image segmentation?

I was wondering how to handle not labeled parts of an image in image segmentation using ... tf.nn.sparse_softmax_cross_entropy_with_logits. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - IndentationError: unexpected indent error

I am new to Python and am getting this error: Traceback (most recent call last): File "/usr/local/bin/ ... items.append(item) return items? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How can I make my classes usable as dict keys?

class A(): def __init__(self, data=''): self.data = data def __str__(self): return str(self.data) d = {} ... of A() BUT with the same content. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - how to round/remove traling ".0" zeros in pandas column?

I'm trying to see if I can remove the trailing zeros from this phone number column. Example: 0 1 8.00735e+09 ... and string, if rows are empty. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Is there a "bounding box" function (slice with non-zero values) for a ndarray in NumPy?

I am dealing with arrays created via numpy.array(), and I need to draw points on a canvas simulating an image. ... at SO.) Thanks for reading See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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