Recent questions tagged Python

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python - Unable to start App Engine application after updating it via Google Cloud SDK

Recently, I have updated Google App Engine from 1.9.17 to 1.9.18 via Google Cloud SDK by using command ' ... recommend you to star this issue. 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 - Provide extra information to Flask's app.logger

The default debug log format for Flask 0.10 is debug_log_format = '------------------------------ ... logger = my_logger, it doesn't seem 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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python - Deciding and implementing a trending algorithm in Django

I have a Django application in which I need to implement a simple trending/ranking algorithm. I'm very lost ... . Thanks in advance everyone. 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 a library is 32bit/64bit built on Mac OS X?

I'm having some trouble in using PyQt/SIP. I guess the SIP is compiled into 64bit, but Python has some problem ... my Python is 32bit or 64bit? 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 - Cross-platform Desktop directory path?

Is there a way of obtaining the Desktop directory path in a cross-platform way, ideally only using standard modules, ... X, Windows and Linux. See Question&Answers more detail:os...

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

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234 views

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python - How to use setuptools to install in a custom directory?

I have a Python package that I need to install in the /usr/lib/python2.7/dist-packages or any other specific ... not use --prefix option also. 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 a SQLAlchemy query vulnerable to injection attacks?

I have the following query that uses like to search a blog. I am not sure if I'm making myself vulnerable to a SQL ... 'queryText'] +"%")).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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python - Pandas: Selecting DataFrame rows between two dates (Datetime Index)

I have a Pandas DataFrame with a DatetimeIndex and one column MSE Loss the index is formatted as follows: ... range within a particular day? 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 - pickle faster than cPickle with numeric data?

currently I'm working on image retrieval with Python. The keypoints and descriptors extracted from an image in this example ... '] = t1 - t0 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 - Why does using threading.Event result in SIGTERM not being caught?

I have a threaded Python daemon. Like any good daemon, it wants to launch all of its worker threads, then ... .Event kill the signal handler? See Question&Answers more detail:os...

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

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331 views

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python - Hello World in mod_wsgi

After failing repeatedly in my quest to get my flask application to run on Apache using mod_wsgi I decided to try ... and running. Thanks a lot! 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 - Trailing delimiter confuses pandas read_csv

A csv (comma delimited) file, where lines have an extra trailing delimiter, seems to confuse pandas.read_csv. ... book Python for 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 - Check if column value is in other columns in pandas

I have the following dataframe in pandas target A B C 0 cat bridge cat brush 1 brush dog cat shoe 2 bridge ... target) but this does not 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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439 views

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python - Can someone explain pipe buffer deadlock?

Python documentation to Popen states: Warning Use communicate() rather than .stdin.write, .stdout.read or . ... someone please explain 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 - How to filter based on array value in PySpark?

My Schema: |-- Canonical_URL: string (nullable = true) |-- Certifications: array (nullable = true) | |-- element: ... double).; line 1 pos 71" See Question&Answers more detail:os...

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

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395 views

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python - What is more efficient .objects.filter().exists() or get() wrapped on a try

I'm writing tests for a django application and I want to check if an object has been saved to the ... =testusername) except User.DoesNotExist: See Question&Answers more detail:os...

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

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484 views

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python - Regex match even number of letters

I need to match an expression in Python with regular expressions that only matches even number of letter occurrences. ... of As SHOULD match. See Question&Answers more detail:os...

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

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869 views

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python - pyenv configure: error: C compiler cannot create executables

I am trying to install multiple versions of Python on my laptop running MacOS Big Sur v11.1. I ... /Library/Developer/CommandLineTools/usr/bin See Question&Answers more detail:os...

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

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289 views

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python - Django subclassing multiwidget - reconstructing date on post using custom multiwidget

So my django book is back at university and I'm struggling to work this one out. I've subclassed django.forms. ... the best way to achieve 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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780 views

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python - Remove titlebar without overrideredirect() using Tkinter?

I'm currently working with Tkinter and Python 2.7 on Linux and I was wondering if there was a way to ... as the titlebar and borders remain. See Question&Answers more detail:os...

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

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746 views

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python - Pandas remove null values when to_json

i have actually a pandas dataframe and i want to save it to json format. From the pandas docs it says: Note NaN s, ... 5},{"A":3}]' Thank you See Question&Answers more detail:os...

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

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291 views

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python - When where and how can i change the __class__ attr of an object?

I'd like to be able to do: >>> class a(str): ... pass ... >>> b = a() >>> b. ... <module> TypeError: __class__ assignment: only for heap types 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 - Install PyTorch from requirements.txt

Torch documentation says use pip install torch==1.4.0+cpu torchvision==0.5.0+cpu -f https://download.pytorch. ... -r requirements.txt (line 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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358 views

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python - How to perform square root without using math module?

I want to find the square root of a number without using the math module,as i need to call the function ... easier way for finding square root? See Question&Answers more detail:os...

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

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321 views

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python - Does coverage.py measure the function and class definitions?

I am trying to achieve a 100% coverage for a basic python module. I use Ned Batchelder's coverage.py module ... rest of the lines are executed. 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 - Type checking: an iterable type that is not a string

To explain better, consider this simple type checker function: from collections import Iterable def typecheck(obj): ... the most efficient? See Question&Answers more detail:os...

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

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334 views

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python - What's your folder layout for a Flask app divided in modules?

I am experimenting with Flask coming from Django and I really like it. There is just one problem that ... Flask developers solved 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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290 views

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python - Use dictionary to replace a string within a string in Pandas columns

I am trying to use a dictionary key to replace strings in a pandas column with its values. However, each column ... was found in Los Angeles. See Question&Answers more detail:os...

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

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