Recent questions tagged PYTHON

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python - Understanding performance difference

Answering this question I faced an interesting situation 2 similar code snippets performed quite differently. I'm asking ... value for that key. See Question&Answers more detail:os...

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

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1.1k views

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python - subprocess.Popen() has inconsistent behavior between Eclipse/PyCharm and terminal execution

The problem I'm having is with Eclipse/PyCharm interpreting the results of subprocess's Popen() differently from a ... I could be doing 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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821 views

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python - X axis in Matplotlib print random numbers instead of the years

Im new in this Pandas and Matplotlib, I follow an example from a book and apparently it give me a warning " ... ='--') 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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685 views

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python - xlswriter formatting a range

In xlswriter, once a format is defined, how can you apply it to a range and not to the whole column or ... xlsxwriter.format.Format'> in write() See Question&Answers more detail:os...

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

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598 views

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python - How (in)efficient is a list comprehension if you don't assign it?

In this question, I'm having an argument with a commenter who argues that for t in threads: t.join() would ... each element in the list threads? See Question&Answers more detail:os...

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

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649 views

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python - How to create a new data frame based on conditions from another data frame

Just getting into Python, so hopefully I'm not asking a stupid question here... So I have a pandas dataframe ... rows that met the condition? See Question&Answers more detail:os...

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

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751 views

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python - How do I connect to Postgresql using SSL from SqlAchemy+pg8000?

Connecting to postgres via pg8000 from SqlAlchemy worked fine until I enabled SSL on postgres. db = create_engine(' ... refused')) None None 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 pull out CSS attributes from inline styles with BeautifulSoup

I have something like this: <img style="background:url(/theRealImage.jpg) no-repate 0 0; height:90px; width ... the "background" css attribute? See Question&Answers more detail:os...

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

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726 views

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python - imported modules becomes None when replacing current module in sys.modules using a class object

an unpopular but "supported" python hack (see Guido: https://mail.python.org/pipermail/python-ideas/2012-May/ ... ] = sys.modules[__name__] See Question&Answers more detail:os...

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

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1.6k views

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python - how to solve AttributeError: '_Environ' object has no attribute 'has_key'

def _is_dev_mode(): # quick hack to check if the program is running in dev mode. # if 'has_key' in os. ... ' object has no attribute 'has_key' See Question&Answers more detail:os...

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

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993 views

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python 2.7 - How to keep the window focus on new Toplevel() window in Tkinter?

I am currently writing a win32gui python27 application (I'm running win7). I am wondering if it is possible to create ... .. That's all, folks! See Question&Answers more detail:os...

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

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888 views

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python - exec() not working inside function python3.x

I am trying to run this code but it seems that the exec() is not executing the string inside the function: ... if possible in such a scenario. See Question&Answers more detail:os...

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

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816 views

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python - Unlucky number 13

I came across this problem Unlucky number 13! recently but could not think of efficient solution this. Problem ... exceeded on coding site. 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 - Pandas read _excel: 'utf-8' codec can't decode byte 0xa8 in position 14: invalid start byte

Trying to read MS Excel file, version 2016. File contains several lists with data. File downloaded from DataBase ... no handle work advices. See Question&Answers more detail:os...

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

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721 views

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python - How to insert an image in a canvas item?

I am working on a game project for school, which look like this : In-game aspect I have created these colored ... Is that possible ? And how ? See Question&Answers more detail:os...

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

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914 views

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python - Unpacking result of delayed function

While converting my program using delayed, I stumbled upon a commonly used programming pattern that doesn't ... this the intended behaviour? See Question&Answers more detail:os...

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

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736 views

1 answer

python - Pandas groupby category, rating, get top value from each category?

First question on SO, very new to pandas and still a little shaky on the terminology: I'm trying to figure ... larger one. Thanks very much! See Question&Answers more detail:os...

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

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930 views

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python - How to install tensorflow GPU version on VirtualBox Ubuntu OS. And host OS is windows 10

I want to setup environment for deep learning using Anaconda (python 3.6). I have system having nvidia get force ... Any one that can help me? 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 - How to display a byte array as hex values

>>> struct.pack('2I',12, 30) b'x0cx00x00x00x1ex00x00x00' >>> struct.pack('2I',12, 31) b' ... all values to display as hex See Question&Answers more detail:os...

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

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824 views

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python - Is it possible to run another spider from Scrapy spider?

For now I have 2 spiders, what I would like to do is Spider 1 goes to url1 and if url2 appears, call ... ) in test1, call scrapy crawl test2 See Question&Answers more detail:os...

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

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718 views

1 answer

python - Django migration file in an other app?

Let's imagine a following simplified Django project: <root>/lib/python2.7/site-packages/externalapp/shop <root>/ ... touched, are read only. See Question&Answers more detail:os...

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

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622 views

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python - How to save a file on the cluster

I'm connected to the cluster using ssh and I send the program to the cluster using spark-submit --master yarn myProgram ... how I can 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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702 views

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python - Convert Multiline into list

I have extracted a set of data from HTML page and copied to a variable. The variable looks like names=''' Apple ... any way to do that in Python See Question&Answers more detail:os...

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

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712 views

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python - ValueError: check_hostname requires server_hostname

I was going to install pandas and epanettools on my computer using the code shown below with python 3.8.5 and ... a lot if any advices! See Question&Answers more detail:os...

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

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1.0k views

1 answer

python - Regex: How to find a GUID in a long string?

Let's say I have this string: str = 'something-rows-1973912739821738172-25892e17-80f6-415f-9c65-7395632f0223' I ... ) Can anyone 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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733 views

1 answer

python - File size limit for read()?

I'm running into a problem while trying to load large files using Python 3.5. Using read() with no ... another method for reading the 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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1.6k views

1 answer

python - Remove ns0 from XML

I have an XML file where I would like to edit certain attributes. I am able to properly edit the attributes ... stuck on how to proceed. 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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731 views

1 answer

python - Dev_appserver.py error when trying to deploy to Google AppEngine

I'm trying to deploy an example dart server using Google AppEngine. However when I run this python script (with ... to try an older version? See Question&Answers more detail:os...

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

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