Recent questions tagged Python

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I have the followng code and it ends up to segmentation fault. import ctypes from random import randint class ... way to define array size? 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 find cluster sizes in 2D numpy array?

My problem is the following, I have a 2D numpy array filled with 0 an 1, with an absorbing boundary condition (all ... an easier way to 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 - Adding Color to new style ipython (v5) prompt

Update to the newly release ipython5 today. Started up the interactive prompt and received: /usr/local/lib/python3. ... would be great. 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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python - How to check if all elements in a tuple or list are in another?

For example, I want to check every elements in tuple (1, 2) are in tuple (1, 2, 3, 4, 5). I don't ... I think it could be done in one line. 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 pickle unicodes and save them in utf-8 databases

I have a database (mysql) where I want to store pickled data. The data can be for instance a dictionary, ... is for instance useful in 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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287 views

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python - What is the largest number the Decimal class can handle?

My program calculates the mathematical constant e, which is irrational. In order to do this, I needed to get ... Python 2 versus Python 3? 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 - LinAlgError: Last 2 dimensions of the array must be square

I need to solve a set of simultaneous equations of the form Ax = B for x. I've used the numpy.linalg.solve ... should have the form (x1,x2,0) 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 - read HDF5 file to pandas DataFrame with conditions

I have a huge HDF5 file, I want to load part of it in a pandas DataFrame to perform some operations, but ... to include a where condition 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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python - Placing text values on axis instead of numeric values

I've created a simple word frequency calculator in python 3.2. Now I want to create a plot to visualize the ... pylab axis? Thanks in advance! 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 - Is wrapping C++ library with ctypes a bad idea?

I read through the following two threads on wrapping C library and C++ library, I am not sure I get it yet. ... suitable for C++? Thanks Oliver 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 - execute a sql script file from cx_oracle?

Is there a way to execute a sql script file using cx_oracle in python. I need to execute my create table scripts in sql files. 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 - Adding a background color to Cell OpenPyXL

I'm trying to make it where my code gives off a Green background on cell when it is "Present" and a ... the background color behind the cell. 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 sort bars in a bar plot in ascending order?

I created a bar plot using matplotlib.pyplot and seaborn libraries. How can I sort bars in increasing order according ... 'vertical') 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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561 views

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python - Faster numpy-solution instead of itertools.combinations?

I'm using itertools.combinations() as follows: import itertools import numpy as np L = [1,2,3,4,5] N = 3 ... a numpy array: L = df.L.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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python 3.x - Networkx neighbor set not printing

I have a little problem with my networkx code. I am trying to find all the neighbors from a node ... /uploads/2013/09/macbethcorrected.graphml See Question&Answers more detail:os...

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

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435 views

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python - Make Tkinter widget take focus

I have a script that uses Tkinter to pop up a window with a message. How do I make sure it takes focus so ... to_read) w.pack() root.mainloop() 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 - Efficiently check if two numbers are co-primes (relatively primes)?

What is the most efficient ("pythonic") way to test/check if two numbers are co-primes (relatively prime) in ... or there is some better 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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590 views

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python - Regular expression: how to match a string containing " " (newline)?

I'm trying to dump data from a SQL export file with regular expression. To match the field of post content, I ... to treat them as they are? See Question&Answers more detail:os...

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

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276 views

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python read all files in directory and subdirectories

I'm trying to translate this bash line in python: find /usr/share/applications/ -name "*.desktop" -exec grep -il ... . How can I fix 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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python - Runaway Jedi Language task in VSCode

Every time I close VSCode (after running some Python script) I have a Python task that lingers in my terminal ... ideas how to 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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382 views

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python - How to not load the comments while parsing XML in lxml

I try to parse XML file in Python using lxml like this: objectify.parse(xmlPath, parserWithSchema) but XML ... delete comments before parsing? See Question&Answers more detail:os...

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

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397 views

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python - Pandas - unstack column values into new columns

I have a large dataframe and I am storing a lot of redundant values that are making it hard to handle my ... each value becoming a new column? See Question&Answers more detail:os...

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

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501 views

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python - Jenkins with pylint gives build failure

I added a build step to execute a Python script. In this script pylint is called with the lint.Run(..args) to ... has an idea why this happens? See Question&Answers more detail:os...

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

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387 views

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python - Convert sparse matrix (csc_matrix) to pandas dataframe

I want to convert this matrix into a pandas dataframe. csc_matrix The first number in the bracket should be ... problem into data analysis. 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 - how to get raw sql from insert(), update() statements with binded params?

Example: from sqlalchemy.dialects import mysql from sqlalchemy import Integer, Column, update, insert from sqlalchemy.ext ... sql, are welcome. See Question&Answers more detail:os...

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

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281 views

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python - Efficient way to compute the Vandermonde matrix

I'm calculating Vandermonde matrix for a fairly large 1D array. The natural and clean way to do this ... faster alternatives are also welcome! See Question&Answers more detail:os...

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

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283 views

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python pty.fork - how does it work

http://docs.python.org/library/pty.html says - pty.fork()? Fork. Connect the child's controlling terminal to a ... fds? I'm confused.--totally. See Question&Answers more detail:os...

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

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236 views

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python - Formatting console Output

I'm having trouble making python print out texts properly aligned. I have tried everything I knew, but still the ... %s FAILED " %files print " See Question&Answers more detail:os...

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

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