Recent questions tagged Python

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python - How does dask.delayed handle mutable inputs?

If I have an mutable object, let's say for example a dict, how does dask handle passing that as an input to delayed ... p2.compute() {'a': 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 - Which itertools generator doesn't skip any combinations?

When I run this code I don't get all the possible combinations of 3 characters: def comb(iterable, ... alternative to repeating the characters. 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 convert Euro currency string to float number?

I need to convert a string currency string in Continental Europe format into a float number: Input: '6.150.593, ... locale.atof() 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 - Conway's Game of life pygame implementation not working with a copy of the grid, not using numpy

I'm trying to implement Conway's game of life in python using pygame. However, it seems there is a problem with ... .sleep(0.1) pygame.quit() 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 - Wrapping C++ Standard library with Cython in ipython

According to the Cython documentation ,I write the following cython code as follows: In [1]:%load_ext Cython In [2] ... 's wrong with my 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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python - Steganographer File Handling Error for non plain-text files

I've built a Python Steganographer and am trying to add a GUI to it. After my previous question regarding reading ... that byte. Thanks, again! 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 - Unix: Getting Mouse -coordinates over X like the Mathematica?

Mathematica DynamicModule[{list = {}}, EventHandler[ Dynamic[Framed@ Graphics[{BSplineCurve[list], Red, Line[list], ... ` so array to stdout 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 - use ansible_facts in module code

I am trying to create my own ansible module (which will update cmdb) and i am looking how to use ansible_facts in ... is it even possible? ). 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 - Customize the styles of Django ClearableFileInput widget

I have use ImageField in my django model to have the image upload facility. ImageField uses the ClearableFileInput ... a solution to 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 - Determine why WTForms form didn't validate

I called form.validate_on_submit(), but it returned False. How can I find out why the form didn't validate? 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 - Use webengine video and audio codecs

For my PyQt5 project, I am using the QWebEngineView, but certain videos, such as .mp4 videos won't play. Can I ... Python 3.7.2, and PyQt5.11 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: How to check for tuples existence in ndarray

I found a strange behavior when working with tuples in numpy arrays. I want to get a table of booleans telling me ... .6.2 over here btw.) 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 - Conditional while loop to calculate cumulative sum?

I want to write a function that takes a list of numbers and returns the cumulative sum; that is, a new list ... this for quite some time now. 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 - Strange behavior of MultipleLocator() with subplots

I'm having trouble with this piece of code: import matplotlib.pyplot as plt from matplotlib.ticker import MultipleLocator, ... '1.3.0') 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 - How to find all the unique substrings of a very long string?

I have a very long string. I want to find all the unique substrings of this string. I tried to write the code ... 32 bit and 64 bit versions. 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 - Saving a kivy widget to a file

So I'm trying to save a kivy widget to a file using cpickle and I get an error. from kivy.uix.widget import ... widget to a file for later use? 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 - Search Numpy array with multiple values

I have numpy 2d array having duplicate values. I am searching the array like this. In [104]: import numpy as ... values. my real array is large 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 center a surface (subsurface) around a rectangle? (scaled sprite hitbox / collision rect)

Currently I have working code which will cycle through a spritesheet, adding each cell/image (9 in total) as a subsurface into a ... .left - self.rect.width if self.vel.x < 0: s...

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

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python - how to modify the view of the camera with pygame and openGL

I'm using python3 I have just started learning openGL and I need some help turning the camera of your view with ... pygame.time.wait(10) main() 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 - Pandas groupby cumulative count

How do I do a cumcount on two groupings, id and name? For example I have: id name 1 name1 1 name1 1 name2 ... tally for each name in an id. See Question&Answers more detail:os...

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

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865 views

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python - getting error when converting a pyscript to exe using Py2Exe

I am new to this py2exe, I have my script in cmd.py import sys for arg in sys.argv: print arg print " ... help on this, 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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872 views

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python 2.7 - django-admin.py startproject mysite command not working

I am trying to create very first project using django but stuck at very first step itself. Whenever I give django- ... for me? Please help !! 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 - Python3 submodules setup does not update paths when run with -m switch

I have the following project structure: server/ server.py __init__.py sockets/ module.py __init__.py I set ... to properly setup sub-packages? See Question&Answers more detail:os...

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

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856 views

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python - How to create a decimal.Decimal object with a given number of significant figures?

The best way I've found to produce a decimal.Decimal number with a specific number of significant figures is the ... adding decimal.Decimal(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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1.2k views

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python - OpenCV: AttributeError: module 'cv2' has no attribute 'face'

I am creating a face recognition system using Python and OpenCV on these versions: Python 3.6.2 :: Anaconda custom ... I still have the error. See Question&Answers more detail:os...

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

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935 views

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python - Can argparse accept argument value as key=val pairs

I am trying to implement below option by using argparse(can't use any other tool like docopt because of project ... new key/val in future. See Question&Answers more detail:os...

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

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815 views

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python - Can't escape escape characters in string

In an attempt to answer this question, I managed to get the string to print the escape characters by escaping the ... Should include , , , etc. See Question&Answers more detail:os...

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

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893 views

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python - Should I seed the random number generator?

From the docs: random.seed(a=None, version=2) Initialize the random number generator. If a is omitted or ... outcome is unpredictable...right? See Question&Answers more detail:os...

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

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