Recent questions tagged Python

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I am sorry I have already asked this question on "Superuser", but nobody answers there, so I deleted it from ... there. Thanks for telling 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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517 views

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python - How to restore RDD of (key,value) pairs after it has been stored/read from a text file

I saved my RDD of (key, value) pairs to a text file using saveAsTextFile. After I read the text file ... am using Python interface to Spark. See Question&Answers more detail:os...

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

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771 views

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python - Pandas - Using `.rolling()` on multiple columns

Consider a pandas DataFrame which looks like the one below A B C 0 0.63 1.12 1.73 1 2.20 -2. ... any suggestion for a more efficient approach? See Question&Answers more detail:os...

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

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490 views

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python - How to define default argument value based on previous arguments?

I want to define a resize(h, w) method, and I want to be able to call it in one of two ways: resize(x,y) ... check inside: if y is None: y = x 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 is a "stateful object" in tensorflow?

In several parts of the documentation (e.g. Dataset Iterators here) there are references to Stateful Objects. ... makes the iterator stateless? See Question&Answers more detail:os...

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

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544 views

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python - Fastest way to convert a dict's keys & values from str to Unicode?

I'm working with a counter from collections import Counter and I want to print its values using matplotlib. ... dictionary keys to Unicode. See Question&Answers more detail:os...

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

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469 views

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python - See if a value exists in a DataFrame

In Python to check if a value is in a list you can simply do the following: >>>9 in [1,2,3, ... through each column/row or anything complicated? 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 - How to replace words in a string using a dictionary mapping

I have the following sentence a = "you don't need a dog" and a dictionary dict = {"don't": "do not" } But ... need a dog" What am I 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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1.2k views

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python - Extract outliers from Seaborn Boxplot

Is there a way to extract all outliers after plotting a Seaborn Boxplot? For example, if I am plotting a boxplot ... 2 Sultan 128 5 More 900 See Question&Answers more detail:os...

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

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544 views

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python - Filter a 2D numpy array

I want to have a sub array (between min and max) of a numpy 2D ndarray xy_dat = get_xydata() x_displayed = ... first value and keep 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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1.0k views

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python - Cannot install pip install pyautogui, error code 1

pip install <package> command is working for me, I tried installing selenium package it is ... -build-q631supyscreeze←[0m See Question&Answers more detail:os...

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

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886 views

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python - Received error "Not Authorized to access this resource/api" when trying to use Google Directory API and Service Account Authentication

I'm really struggling with trying to use Service Account authentication to use the Google Directory API (Admin SDK). ... well - "Backend Error". See Question&Answers more detail:os...

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

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595 views

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python - Vectorizing a Numpy slice operation

Say I have a Numpy vector, A = zeros(100) and I divide it into subvectors by a list of breakpoints ... and instead vectorize these operations? See Question&Answers more detail:os...

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

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870 views

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python - PIL - apply the same operation to every pixel

I create an image and fill the pixels: img = Image.new( 'RGB', (2000,2000), "black") # ... since theoretically the loops are parallelizable)? See Question&Answers more detail:os...

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

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608 views

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python - matplotlib: data points connected in wrong order in line graph

I'm reading a pandas dataframe, and trying to generate a plot from it. In the plot, the data points seem to ... to right on the plot)? 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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908 views

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python - Resampling a pandas dataframe with multi-index containing timeseries

apologies from creating what appears to be a duplicate of this question. I have a dataframe that is shaped more or ... 06-23 0.254402 -0.328190 See Question&Answers more detail:os...

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

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524 views

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python - How do I convert this complex SQL into a Django model query?

I'm writing a Python/Django application to do some stock analysis. I have two very simple models that look like this: ... rows in set (0.02 sec) See Question&Answers more detail:os...

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

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789 views

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python - How to use full-text search in sqlite3 database in django?

I am working on a django application with sqlite3 database, that has a fixed database content. By fixed I mean the ... s when to use checklist). See Question&Answers more detail:os...

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

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1.5k views

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python - Inserting pyodbc.Binary data (BLOB) into SQL Server image column

I am trying to insert binary data into a column of image datatype in a SQL Server database. I know varbinary( ... 'text/calendar', ablob, 1717) See Question&Answers more detail:os...

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

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720 views

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python - how to solve "Process terminated because the request deadline was exceeded. (Error code 123)" in google api?

I have a projects deployed on Google App Engine having Google API (Python). Every request to any of ... .format_exc()) return procedureResult See Question&Answers more detail:os...

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

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867 views

1 answer

python - SQLAlchemy sessions error

Background: Flask / Flask-SQLAlchemy / Flask-WTF, using declarative and scoped session Simple POST operation: ... = db_session.query_property() See Question&Answers more detail:os...

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

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850 views

1 answer

python - Pandas Group Weighted Average of Multiple Columns

Say I have the following dataframe: >>> df=pd.DataFrame({'category':['a','a','b','b'], ... ' ... parallel way to do that with weighted averages. See Question&Answers more detail:os...

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

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666 views

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python - Change newline character .readline() seeks

Is it possible to change the newline character the .readline() method looks for while reading lines? I might have the ... does though, 0" >>> See Question&Answers more detail:os...

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

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734 views

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python - Connecting to SQLServer 2005 with adodbapi

I'm very new to Python and I have Python 3.2 installed on a Win 7-32 workstation. Trying to connect to ... adodbapi. How do 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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690 views

1 answer

python - Linear Regression from Time Series Pandas

I would like to get a regression with a time series as a predictor and I'm trying to follow the answer give ... [datetime64[ns]] to [float64] See Question&Answers more detail:os...

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

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523 views

1 answer

python - Filter list's elements by type of each element

I have list with different types of data (string, int, etc.). I need to create a new list with, for example, ... string elements. How to do it? See Question&Answers more detail:os...

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

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861 views

1 answer

python - GeoDjango filter by distance from a model field

My question is pretty much the same as this. But its quite old and it feels like it must be a ... distance of a particular location. 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

1 answer

python - fonts clipping with PIL

This image was created with PIL. See how the g's and the y's are cut off in this image? How can I prevent this? ... and PIL 1.1.6 on Ubuntu 9.10 See Question&Answers more detail:os...

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

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