Recent questions tagged Python

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python 3.x - Zero accuracy training a neural network in Keras

I train a Neural Network of Regression Problem in Keras. Why the output is only one Dimension, the accuracy in each ... in y_train_1[:,0:1]] See Question&Answers more detail:os...

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

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python - pd.read_excel throws PermissionError if file is open in Excel

Whenever I have the file open in Excel and run the code, I get the following error which is surprising because I ... denied: '<Path to 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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python - How to create a custom numpy dtype using cython

There are examples for creating custom numpy dtypes using C here: Additionally, it seems to be possible to create ... not known ahead of time. 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 - Replace current process with invocation of subprocess?

In python, is there a way to invoke a new process in, hand it the same context, such as standard IO ... like it could help manage memory. 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 - Subtracting two annotated columns

I need to be able to sort on the aggregate of two annotated columns So I'd like to do something like ... to accomplish something like the 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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python - Keeping NaN values and dropping nonmissing values

I have a DataFrame where I would like to keep the rows when a particular variable has a NaN value and drop the ... is the opposite to .dropna()? 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 - Sometimes pip install is very slow

I am sure it is not network issue. Some of my machine install packages using pip ... Successfully built 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 - How do I delete or replace a file in a zip archive?

I'm creating a program in Python which downloads a set of files and puts them into an archive with the zipfile ... delete a file in an archive? 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 check if a list index exists?

Seems as though if not mylist[1]: return False Doesn't work. 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 - Numpy.dot TypeError: Cannot cast array data from dtype('float64') to dtype('S32') according to the rule 'safe'

Why am I getting this error when using np.dot(a,b.T): TypeError: Cannot cast array data from dtype('float64') to ... My NumPy version is 1.11.0. 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 - TypeError: string argument without an encoding

I want to upload compressed gzip of Json into Google Storage. I have this code: import datalab.storage as storage ... I'm running Python 3.5 See Question&Answers more detail:os...

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

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688 views

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python - Is there a filter for divide for Django Template?

I noticed there is built-in add filter, but I wasn't able to find divide. I am new to Django and not sure if there is a such filter. 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 - Ignore by directory using Pylint

The following is from the Pylint documentation: --ignore=<file> Add <file or directory> to the black list ... errors, warnings, and information. See Question&Answers more detail:os...

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

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580 views

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python - Splitting a list of strings with a delimiter and adding to new lists

This is my list: names = ['blue v orange', 'white v black', 'red v brown'] I want to split them by ' v ' ... : first, second = x.split(' v ') See Question&Answers more detail:os...

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

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357 views

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python - How to append items of a list to another list using a loop

Having two lists: list1 = ['Me','You','Sam'] list2 = ['Joe','Jen'] How can I append items of list2 to ... = list2 + " list item" print list3 See Question&Answers more detail:os...

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

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525 views

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python - How to access outer attribute class within inner class?

I reconstruct my code to more readable by using class and follow javascript style. The class is about modem ... .manufacturer() device.close() See Question&Answers more detail:os...

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

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476 views

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python - Unique only cartesian product of several lists

The following works well for cart_product([1,2,3], [a,b,c], [v]), doesn't it also return duplicate cartesian product, if ... 2,3],[a,b,c],[v] ] See Question&Answers more detail:os...

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

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515 views

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python - Counting consecutive duplicates of strings from a list

I have a Python list of strings such that, Input: li = ['aaa','bbb','aaa','abb','abb','bbb','bbb','bbb','aaa',' ... abb',2],['bbb',3],['aaa',2]] 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 - Why is my airbrush function not working in pygame?

I am creating a basic paint app and I want to create an airbrush function, and have other functions for different ... just doesn't work at all See Question&Answers more detail:os...

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

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379 views

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python - How to optimize this image iteration in numpy?

I'm using this code to detect green color in the image. The problem is this iteration is really slow. How ... ,himg,0),exg) return processedimg See Question&Answers more detail:os...

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

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716 views

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python - how to show picture and text in a label (PyQt)

I need to show a picture and text in a label, and this is my code: import sys from PyQt5.QtCore import * ... .png') self.setPixmap(self.pixmap) 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 - Terminate the Thread by using button in Tkinter

In my GUI code, I tried to run loop1 and loop2 at the same time by clicking one button. Thus, I used Thread to ... I don't know 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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510 views

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python - showing progress while spawning and running subprocess

I need to show some progress bar or something while spawning and running subprocess. How can I do that with ... when each second is passing. See Question&Answers more detail:os...

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

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442 views

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python - PhotoImage -- omitting option name

After seeing this, PhotoImage not showing up the image associated with it I wondered why omitting the type of ... delete/close vote this one. See Question&Answers more detail:os...

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

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467 views

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python - Counting occurrences without using collections.Counter

I am trying to retrieve the most frequent and less frequent elements in a list. frequency([13,12,11,13,14, ... me to do it without collections? See Question&Answers more detail:os...

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

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482 views

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python - Import oct2py says access is denied

I have installed Python anaconda environment, and installed oct2py using (D:Anaconda2) C:UsersBNP>conda install -c ... says access is denied. See Question&Answers more detail:os...

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

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592 views

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python - How to draw a solid of revolution of a polynomial function around the y-axis?

A solid of revolution of a function y = x**2 around the y-axis can be plotted using the code below: import numpy as np ... x**3 + x**2 + x ? See Question&Answers more detail:os...

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

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417 views

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python - Joining elements of a list

I have a list of tuples like: data = [('a1', 'a2'), ('b1', 'b2')] And I want to generate a string like ... %s' % str(elem) then is there a way? See Question&Answers more detail:os...

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

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