Recent questions tagged Python

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python - How to change Keras backend (where's the json file)?

I have installed Keras, and wanted to switch the backend to Theano. I checked out this post, but still have ... Can someone please help? 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

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python - resize with averaging or rebin a numpy 2d array

I am trying to reimplement in python an IDL function: http://star.pst.qub.ac.uk/idl/REBIN.html which downsizes ... . Would you have any hint? See Question&Answers more detail:os...

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

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346 views

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python - Django model method - create_or_update

Similar to get_or_create, I would like to be able to update_or_create in Django. Until now, I have using an ... more recent version of Django. See Question&Answers more detail:os...

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

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364 views

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python 2.7 - Pandas: A clean way to initialize data frame with a list of namedtuple

I'm new to pandas, therefore perhaps I'm asking a very stupid question. Normally initialization of data frame in ... from it? Many many 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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305 views

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python - overwriting a spark output using pyspark

I am trying to overwrite a Spark dataframe using the following option in PySpark but I am not successful ... overwrite command is not successful See Question&Answers more detail:os...

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

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580 views

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python - ArgumentError: relationship expects a class or mapper argument

I am getting this strange error, and I'm saying strange because I made a change to an unrelated table. I am ... if I am iterating another table See Question&Answers more detail:os...

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

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336 views

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python - isinstance and Mocking

class HelloWorld(object): def say_it(self): return 'Hello I am Hello World' def i_call_hello_world(hw_obj): print ... isinstance(mock, int) True See Question&Answers more detail:os...

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

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555 views

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python - Converting a NumPy array to a PIL image

I want to create a PIL image from a NumPy array. Here is my attempt: # Create a NumPy array, which has ... assigned to them in the NumPy array? See Question&Answers more detail:os...

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

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487 views

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python - How to install psycopg2 with pg_config error?

I've tried to install psycopg2 (PostgreSQL Database adapater) from this site, but when I try to install after I ... sure where to go from 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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python - How and where does py.test find fixtures

Where and how does py.test look for fixtures? I have the same code in 2 files in the same folder. When I ... the last line of the test function. See Question&Answers more detail:os...

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

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347 views

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python - Why can "%.10f" % Decimal(u) emit a string with a literal colon?

When formatting a number to be printed, 12 digit numbers are being formatted with a colon immediately after the dot. ... this is a weird bug. See Question&Answers more detail:os...

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

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503 views

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python - index of non "NaN" values in Pandas

From Pandas data frame, how to get index of non "NaN" values? My data frame is A b c 0 1 q1 1 1 2 NaN 3 2 3 q2 3 ... 3 q2 3 2 4 q1 NaN 3 5 q2 7 See Question&Answers more detail:os...

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

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382 views

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python - Log-log lmplot with seaborn

Can the function lmplot from Seaborn plot on a log-log scale? This is lmplot on a normal scale import numpy as np ... lmplot('x', 'y', df2) See Question&Answers more detail:os...

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

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318 views

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python - Anaconda: disable prompt change

When using anaconda (install for python), when I switch to the virtual env with this: source activate my_env It ... did not help. Any idea? 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 - How can I install lxml in docker

I want to deploy my python project in docker, I wrote lxml>=3.5.0 in the requirments.txt as the project ... I install lxml correctly in docker? See Question&Answers more detail:os...

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

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476 views

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python - Installing tkinter on ubuntu 14.04

I want to run python code on Ubuntu 14.04, but when I execute it, it gives me the following error ... * ImportError: No module named tkinter 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 - ImportError: cannot import name 'webdriver'

I am a newbie for selenium python. I have installed python, pip etc.. I am trying to run the below ... could anyone please solve 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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222 views

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python - how to remove attribute of a etree Element?

I've Element of etree having some attributes - how can we delete the attribute of perticular etree Element. See Question&Answers more detail:os...

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

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398 views

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python - AttributeError: module 'html.parser' has no attribute 'HTMLParseError'

This is the hints,how can I resolve it? I use Python 3.5.1 created a virtual envirement by virtualenv ... ' has no attribute 'HTMLParseError' See Question&Answers more detail:os...

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

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312 views

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python sort list of json by value

I have a file consists of JSON, each a line, and want to sort the file by update_time reversed. sample JSON ... non-exception ways 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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269 views

1 answer

python - Test if function or method is normal or asynchronous

How can I find out if a function or method is a normal function or an async function? I would like my code ... idea how to implement isAsync(). See Question&Answers more detail:os...

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

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475 views

1 answer

python - Escaping dollar sign in ipython notebook

I have a markdown cell in iPython that contains four dollar signs. iPython interprets anything between dollar signs ... the dollar sign? 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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393 views

1 answer

python - IPython Notebook output cell is truncating contents of my list

I have a long list (about 4000 items) whose content is suppressed when I try to display it in an ipython ... list instead of a cutoff 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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1.2k views

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python - ModuleNotFoundError: No module named 'virtualenv.seed.embed.via_app_data' when I created new env by virtualenv

I had install virtualenv, created a venv by virtualenv since last month but now I can't create other env. In ... after I had install Anaconda. See Question&Answers more detail:os...

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

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314 views

1 answer

python - unpack the first two elements in list/tuple

Is there a way in python to do like this: a, b, = 1, 3, 4, 5 And then: >>> a 1 >>> b 3 ... it will throw ValueError: too many values to unpack.) See Question&Answers more detail:os...

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

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537 views

1 answer

python - Django. You don't have permission to edit anything

I created a little app a while ago. I created admin.py and used admin.site.register(MenuEntry) to add the class to ... do now to make it 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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436 views

1 answer

python - No module named 'pymysql'

I'm trying to use PyMySQL on Ubuntu. I've installed pymysql using both pip and pip3 but every time I use import ... 3.5, but not on Ubuntu. See Question&Answers more detail:os...

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

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327 views

1 answer

python - Getting min and max Dates from a pandas dataframe

How do I get the min and max Dates from a dataframe's major axis? value Date 2014-03-13 10000.000 2014-03- ... value but that's not what I want See Question&Answers more detail:os...

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

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