Recent questions tagged Python

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python - SQLAlchemy: get relationships from a db.Model

I need to get a list of a model's properties which are actually relationships (that is, they were created by ... into SQLAlchemy to help me out? 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 passing too many arguments to the constructor considered an anti-pattern?

I am considering using the factory_boy library for API testing. An example from the documentation is: class UserFactory( ... do I have? 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 - Why does numpy.r_ use brackets instead of parentheses?

Numpy.r_, .c_ and .s_ are the only Python functions I've come across that take arguments in square brackets rather than ... 2,3], [4,5,6]) 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 - PyPDF 2 Decrypt Not Working

Currently I am using the PyPDF 2 as a dependency. I have encountered some encrypted files and handled them as ... -opens with Adobe Reader). 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 - No FileSystem for scheme: s3 with pyspark

I'm trying to read a txt file from S3 with Spark, but I'm getting thhis error: No FileSystem for scheme: s3 ... java:748) How can I 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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python requests can't find a folder with a certificate when converted to .exe

I have a program that pools ad stats from different marketing systems. Everything works fine untill i convert it ... }".format(conn.key_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 - FieldError: Cannot resolve keyword 'XXXX' into field

This is a very strange error. I only receive it on my heroku server. Here is how my model is: # ... ) admin.site.register(News, NewsAdmin) 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 - Running coverage inside virtualenv

I recently stumbled upon some issue with running coverage measurements within virtual environment. I do not remember ... be a cleaner 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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python - Python3 write gzip file - memoryview: a bytes-like object is required, not 'str'

I want to write a file. Based on the name of the file this may or may not be compressed with the gzip ... using Python3.5 on Ubuntu 16.04 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 - Combine two Pandas dataframes, resample on one time column, interpolate

This is my first question on stackoverflow. Go easy on me! I have two data sets acquired simultaneously by different ... there's a 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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python - Is concatenating with "+" more efficient than separating with "," when using print?

I just noticed that if I use + for concatenation in the print() function and run the code in the ... efficiency difference between these two? 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 - TensorFlow - Input 'split_dim' of 'Split' Op has type float32 that does not match expected type of int32

I've installed tensorflow using pip on ubuntu 16.04 LTS, when running this code https://github.com/ ... match expected type of int32. 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 change nesting function's variable in the nested function

I'd like to have variable defined in the nesting function to be altered in the nested function, something like def ... the good way to 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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python - Whats the difference between using {{STATIC_URL}} and {% static %}

Throughout the django documentation and a lot of tutorials people seem to pick freely between using the {% static % ... using on over the other. See Question&Answers more detail:os...

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

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215 views

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python 2.7 - Google App Engine error: NeedIndexError: no matching index found

I'm having trouble with Google's App engine indexes. When running my app via the GoogleAppEngineLauncher, ... ndb.TextProperty(indexed=False) 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 - Find out the unicode script of a character

Given a unicode character what would be the simplest way to return its script (as "Latin", "Hangul" etc)? ... to provide this kind of feature. 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 - Django Not Reflecting Updates to Javascript Files?

I have javascript files in my static folder. Django finds and loads them perfectly fine, so I don't ... ever experienced anything like 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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218 views

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python - Find min value in array > 0

I am looking to find the lowest positive value in an array and its position in the list. If a value within ... present position: 3, value: 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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612 views

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python - How to pass parameter to PythonOperator in Airflow

I just started using Airflow, can anyone enlighten me how to pass a parameter into PythonOperator like below: ... Thank you 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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python 3.x - Alternative to scipy.misc.imresize()

I want to use an old script which still uses scipy.misc.imresize() which is not only deprevated but removed ... what scipy.misc.imresize does. 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 - Django: NotImplementedError: annotate() + distinct(fields) is not implemented

There are 2 simple models: class Question(TimeStampedModel): text = models.CharField(max_length=40) class Answer(TimeStampedModel ... (), ), ) See Question&Answers more detail:os...

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

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272 views

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python - show reverse dependencies with pip?

Is it possible to show the reverse dependencies with pip? I want to know which package needs package foo. And ... is needed by this package. See Question&Answers more detail:os...

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

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338 views

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python - What's "better" the reverse method or the reversed built-in function?

What is typically regarded as more Pythonic/better/faster to use, the reverse method or the reversed built-in ... _list.reverse() print _list See Question&Answers more detail:os...

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

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424 views

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python - Rounding Pandas Timestamp to minutes

I want to create a DateTimeIndex at 1 minute intervals based on a start and end timestamp (given in microseconds since ... . How can I 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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295 views

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python - Django: Filter objects by integer between two values

I'm struggling with a Django filtering problem I couldn't solve so far. I have a database with from/to integers, ... that I could use for 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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375 views

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python - Improve quality of Wand conversion

I convert files of different formats (JPEG, PNG, TIFF, PDF) to JPEG using Wand, a ctypes-based ImageMagick ... the density option in Wand? See Question&Answers more detail:os...

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

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381 views

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python - Comparing NumPy arrays so that NaNs compare equal

Is there an idiomatic way to compare two NumPy arrays that would treat NaNs as being equal to each other (but ... the same shape and dtype. See Question&Answers more detail:os...

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

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823 views

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python - Check if two CIDR addresses intersect?

Given two CIDR addresses say 192.168.2.0/14 and 192.168.2.0/32 How do I check if two ip addresses overlap in ... an ip is in a network 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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