Recent questions tagged Python

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python - Can I update a bokeh plot without callbacks from the server?

I want Bokeh to update periodically and arbitrarily when the results from a separate algorithm running in python ... becomes available? 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 print a string with a little delay between the chars?

I want a text to be displayed as if it is just being typed. So I need a little delay after every letter. I ... . I hope anyone can help 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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python - 3d distance calculations with GeoDjango

I am using python 2.7.12 django 1.10.6 postgreSQL 9.5.6 postGIS 2.2.2 First question I need to use ... print i.distance Output: 461.10913945 m 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 - Flag Daylight Saving Time (DST) Hours in Pandas Date-Time Column

I created an hourly dates dataframe, and now I would like to create a column that flags whether each row (hour) ... == True, 1, 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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python - How do I ignore tags while getting the .string of a Beautiful Soup element?

I'm working with HTML elements that have child tags, which I want to "ignore" or remove, so that the text is still ... tag.. How do 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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python - How does the function that is called inside the class declaration?

Have this code: >>> class Foo: ... zope.interface.implements(IFoo) ... ... def __init__(self, x=None): ... is the part of zope.interface module. 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 - CPython: Why does += for strings change the id of string variable

Cpython optimizes string increment operations,When initializing memory for a string, the program leaves extra ... string variable changes. See Question&Answers more detail:os...

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

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765 views

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python - Compare Multiple Columns to Get Rows that are Different in Two Pandas Dataframes

I have two dataframes: df1= A B C 0 A0 B0 C0 1 A1 B1 C1 2 A2 B2 C2 df2= A B C 0 A2 ... for a straightforward Pandas way of accomplishing 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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585 views

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python - Pandas inverse of pivot table

I have a DataFrame (e.g., df_p) which has already converted into a pivot table: import pandas as pd df = ... should I convert df_p back to df? 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 plot time on y-axis in '%H:%M' format in matplotlib?

i would like to plot the times from a datetime64 series, where the y-axis is formatted as '%H:%M, ... xaxis_date() Could anyone advise 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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python - Convert daily data in pandas dataframe to monthly data

My dataframe has daily stock data in it: Date AAPL NFLX INTC 0 2008-01-02 27.834286 3.764286 25.350000 1 ... above. Thanks much for your help. See Question&Answers more detail:os...

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

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680 views

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python - Tensorflow 1.9 for CPU, without GPU still requires cudNN - Windows

I am working on a Win10 machine, with python 3.6.3 and using tensorflow 1.9, pip 18.0. I did not ... persists. How can this be rectified.? See Question&Answers more detail:os...

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

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480 views

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python - How can I access T from a Generic[T] instance early in its lifecycle?

Oh, it feels so contrived to ask now that I've resigned myself to an alternative approach, but Python's ... type arguments of typing.Generic? See Question&Answers more detail:os...

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

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662 views

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python - Why won't my curses box draw?

I am toying with curses and I can't get a box to draw on the screen. I created a border which works ... finally: curses.endwin() any advice? See Question&Answers more detail:os...

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

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394 views

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python - How to convert CSV to JSON?

I have a CSV file with the header as Key and the data as the Value. My goal is to convert the CSV file into ... Value 1 Value 2 Value 3 ... 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

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python - keep highest value of duplicate keys in dicts

For school i am writing a small program for a rankinglist for a game. I am using dicts for this, with the ... thus that value. thnx 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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634 views

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python - Pandas memory error

I have a csv file with ~50,000 rows and 300 columns. Performing the following operation is causing a memory error in ... rows (~2,000) 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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546 views

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python - Consistent ColumnTransformer for intersecting lists of columns

I want to use sklearn.compose.ColumnTransformer consistently (not parallel, so, the second transformer should be executed ... can I fix 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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610 views

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python - Calculating ERA5 Daily Total Precipitation using CDO

Essentially, this is a repost of this question: https://confluence.ecmwf.int/pages/viewpage.action?pageId= ... correct - 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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433 views

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python - Get tuples with max value from each key from a list

I have a list of tuples like this: [(1, 0), (2, 1), (3, 1), (6, 2), (3, 2), (2, 3)] ... was wondering about an efficient way to go about 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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323 views

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python - Tensorflow gradient with respect to matrix

Just for context, I'm trying to implement a gradient descent algorithm with Tensorflow. I have a matrix X [ ... achieve the behavior I desire. See Question&Answers more detail:os...

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

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547 views

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python datetime - Get day of year from a string date in pandas dataframe

I want to turn my date string into day of year... I try this code.. import pandas as pd import datetime data ... ... and sorry Im new on 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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453 views

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python - Concurrently run two functions that take parameters and return lists?

I understand that two functions can run in parallel using multiprocessing or threading modules, e.g. Make 2 functions run at ... 8, 27, 64, 125] See Question&Answers more detail:os...

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

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579 views

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python - Deeply nested JSON response to pandas dataframe

I am new to python/pandas and I am having some issues with converting a nested JSON to pandas dataframe. I am sending ... , "properties": []}]}} See Question&Answers more detail:os...

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

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599 views

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python - Django Rest Framework regroup queryset by a category

In the current project that i'm working on, i need to regroup (group) a queryset by category and put ... efficient way to do 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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463 views

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python - Downsizing from Anaconda to Miniconda

I had installed Anaconda on my system before I knew the difference between Anaconda and Miniconda. I would like to ... way of going about 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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631 views

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python - check if numpy array is subset of another array

Similar questions have already been asked on SO, but they have more specific constraints and their answers don't ... because this is cheap). See Question&Answers more detail:os...

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

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319 views

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python - Impact of setting random.seed() to recreate a simulated behaviour and choosing the seed

I am doing a scheduling simulation in python which is full determinstic. So, when I have the same input ... distributions with my choosen seeds. See Question&Answers more detail:os...

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

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