Recent questions tagged Python

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python - Create a field whose value is a calculation of other fields' values

class PO(models.Model) qty = models.IntegerField(null=True) cost = models.IntegerField(null=True) total = qty * ... of how to deal with 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 - Cycle through list starting at a certain element

Say I have a list: l = [1, 2, 3, 4] And I want to cycle through it. Normally, it would do something like ... 4, 1... How can I accomplish 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 run a file in IPython console as default instead of terminal?

I started a new project in PyCharm. I have Anaconda 3.6 installed. So, in PyCharm, I selected the Anaconda ... and use only the IPython console? 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 - Correct placement of colorbar relative to geo axes (cartopy)

Using Cartopy, I would like to have full control of where my colorbar goes. Usually I do this by getting the ... a solution so far. 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 find duplicate names using pandas?

I have a pandas.DataFrame with a column called name containing strings. I would like to get a list of the ... t filter out the singleton names. 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 - Configuring Flask-SQLAlchemy to use multiple databases with Flask-Restless

I have a Flask app that uses Flask-SQLAlchemy and I'm trying to configure it to use multiple databases with the ... What am I doing wrong 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 - Is there a way to use asyncio.Queue in multiple threads?

Let's assume I have the following code: import asyncio import threading queue = asyncio.Queue() def threaded(): ... to do that using asyncio. 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 - convert numpy array to 0 or 1

A = np.array([[0.94366988, 0.86095311, 0.88896715, 0.93630641, 0.74075403, 0.52849619 , 0.03094677, 0. ... And how to use vectorize this thx 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 - What to set `SPARK_HOME` to?

Installed apache-maven-3.3.3, scala 2.11.6, then ran: $ git clone git://github.com/apache/spark.git -b ... /python:/spark/python/lib. No change. 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 - PyCharm, what is python_stubs?

I have had numerous problems with PyCharm not recognising functions in libraries properly, so I've decided to ... the functions' signatures? See Question&Answers more detail:os...

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

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209 views

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python - How do you dynamically identify unknown delimiters in a data file?

I have three input data files. Each uses a different delimiter for the data contained therein. Data file one ... do this. Any suggestions? See Question&Answers more detail:os...

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

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309 views

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python - How to check similarity of two images that have different pixelization

I am running a python code to check similarity of Quora and Twitter users profiles photos, but i am not getting a ... identical", what can i do? 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 configure display output in IPython pandas

I'm trying to configure my IPython output in my OS X terminal, but it would seem that none of the ... . Any insight would be appreciated! See Question&Answers more detail:os...

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

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383 views

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python - Substitutions inside links in reST / Sphinx

I am using Sphinx to document a webservice that will be deployed in different servers. The documentation is full of ... how to work around 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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478 views

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python - Convert currency to float (and parentheses indicate negative amounts)

I have a df with currency: df = pd.DataFrame({'Currency':['$1.00','$2,000.00','(3,000.00)']}) Currency 0 $1 ... 0 1.00 1 2000.00 2 -3000.00 See Question&Answers more detail:os...

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

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266 views

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python - Reading Json file as Pandas Dataframe error

I have a Json file as follows. It's a list of dicts. [{"city": "ab", "trips": 4, "date": "2014-01 ... but it seems to have huge amounts of data. See Question&Answers more detail:os...

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

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231 views

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python - How do I extend, mimic, or emulate the range function?

I made a little generator function for character ranges: >>> def crange(start, end): ... for i in range(ord( ... , and should I even go there? 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 - Downsample a 1D numpy array

I have a 1-d numpy array which I would like to downsample. Any of the following methods are acceptable if ... functions are quite intricate... See Question&Answers more detail:os...

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

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470 views

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python - Why doesn't coverage.py properly measure Django's runserver command?

I should know the answer to this, but I don't: if you try to measure the coverage of a Django project ... it properly the way people expect? See Question&Answers more detail:os...

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

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288 views

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python - decorating decorators: try to get my head around understanding it

I'm trying to understand decorating decorators, and wanted to try out the following: Let's say I have two decorators ... def byebye(): ... See Question&Answers more detail:os...

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

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704 views

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python - Is it possible to run a pypy kernel in the Jupyter notebook?

I have always wondered if it were possible to run PyPy in the Jupyter notebook. I recently tried installing ... use PyPy rather than CPython? See Question&Answers more detail:os...

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

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263 views

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python - repeating multiple characters regex

Is there a way using a regex to match a repeating set of characters? For example: ABCABCABCABCABC ABC{5} I know that's ... (?<cap>(ABC){5}) ? 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 - PyMongo -- cursor iteration

I've recently started testing MongoDB via shell and via PyMongo. I've noticed that returning a cursor and ... -fetch each record, correct? See Question&Answers more detail:os...

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

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252 views

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python - Get count of values across columns-Pandas DataFrame

I have a Pandas DataFrame like following: A B C 0 192.168.2.85 192.168.2.85 124.43.113.22 1 192.248. ... strange?Help me to solve this? 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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184 views

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python - Why people create virtualenv in a docker container?

You can build a container with Dockerfile in a few seconds, then why people needs to install a virtual enviroment ... " in a virtual machine ? 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 2to3 tool in windows?

I tried to modify the sintax using 2to3 tool by running command python C:Python32Toolsscripts2to3.py neo4j.py and got the ... the code to v3.2? See Question&Answers more detail:os...

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

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669 views

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python 3.x - Tensorboard Error: No dashboards are active for current data set

I am trying to use Tensorboard but every time I run any program with Tensorflow, I get an error when I ... command prompt? Thank you 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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375 views

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python - Webdriver Exception:Process unexpectedly closed with status: 1

I try to run a selenium program on a Linux machine.But I got the exceptions: Traceback (most recent call ... the exceptions? Thanks for helping. See Question&Answers more detail:os...

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

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