Recent questions tagged Python

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python - np.where Not Working in my Pandas

I have an np.where problem using Pandas that is driving me crazy and I can't seem to solve through Google, the ... be given What is going on? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Subtracting numpy arrays of different shape efficiently

Using the excellent broadcasting rules of numpy you can subtract a shape (3,) array v from a shape (5,3) ... X without explicitly using a loop? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How do you create a Tkinter GUI stop button to break an infinite loop?

So I have a Tkinter GUI with two simple options, a start and stop button. I have defined the GUI layout: from ... break out of the while loop. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to create a message box with tkinter?

I've been trying to build a fairly simple message box in tkinter that has "YES" and "NO" buttons. When I push the ... a file. How can I do this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to create transparent widgets using Tkinter?

I'm new to Python. I wanted to create an app which has an image as its background. But when I add a ' ... ' widgets color set to 'transparent' ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Pytorch ValueError: optimizer got an empty parameter list

When trying to create a neural network and optimize it using Pytorch, I am getting ValueError: optimizer got an ... like the linked example? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Convert django RawQuerySet to Queryset

I have 2 Django models, ModelA with an ArrayField that is used to store a large list of primary key ... db/sql/#performing-raw-sql-queries See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - PyQt window closes immediately after opening

I am getting an issue when trying to open a PyQt window. The code below is an example of my ... closes almost immediately after opening. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - subprocess.Popen simple code does not allow me to perform a cd (change directory)

I'm trying to use a Python script to change directory, but I am getting an error. The python code: ... change directory in a python subprocess? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - In SQLAlchemy, can I create an Engine from an existing ODBC connection?

I am working in an environment where I am given an ODBC connection, which has been created using credentials ... the underlying RDBMS? Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Improve performance of converting numpy array to MATLAB double

Calling MATLAB from Python is bound to give some performance reduction that I could avoid by rewriting (a lot ... MATLAB output back to Python. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How can I get integer solutions with scipy.optimize.linprog?

When I solve the problem of Linear Programming, like in the following formula, I want the result of x all ... terminated successfully.' nit: 2 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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291 views

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python - Date difference between consecutive rows - Pyspark Dataframe

I have a table with following structure USER_ID Tweet_ID Date 1 1001 Thu Aug 05 19:11:39 +0000 2010 1 6022 Mon ... 10 03:21:23 +0000 2013 5510 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Find group of consecutive dates in Pandas DataFrame

I am trying to get the chunks of data where there's consecutive dates from the Pandas DataFrame. My ... of consecutive rows without iterating. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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492 views

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python - Change color of specific ticks at plot with matplotlib

Using matplotlib, is there an option to change the color of specific tick labels on the axis? I have a simple ... all ticks just some specific. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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328 views

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python - Remove NaN 'Cells' without dropping the entire ROW (Pandas,Python3)

Right now I have a DF like this Word Word2 Word3 Hello NaN NaN My My Name NaN Yellow Yellow Bee Yellow Bee ... ? Should I reindex the table? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Why is the Descriptor not getting called when defined as instance attribute?

When I make the "data" variable a class variable, the following works, but when I make it an object variable, ... == '__main__': main() See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Bad JSON - Keys are not quoted

I am scraping some JSONP dictionaries from AWS (from javascript files). After parsing the raw data for only the ... used Python to parse it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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529 views

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python - TypeError: coercing to Unicode: need string or buffer, list found

I'm trying to get a data parsing script up and running. It works as far as the data manipulation is ... can note it for future reference. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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453 views

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python - Spyder IDE Console History

How to see print history in console in spyder IDE ? If more data gets printed it does not shows on console and not even shows the scroll bar. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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223 views

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python - How do I create a unique value for each key using dict.fromkeys?

First, I'm new to Python, so I apologize if I've overlooked something, but I would like to use ... generating the resulting dictionary by hand? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Using boto for AWS S3 Buckets for Signature V4

I have a problem with using Python-Boto SDK for S3 Buckets for region Frankfurt. According to Amazon link this ... can I fix it properly? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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160 views

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python - Defining function without the brackets?

I understand that my question might sound stupid, and that there might be something in the language definition that ... this possible at all? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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221 views

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python - Can't use Jupyter Notebook: jsonschema apparently missing

When using an Anaconda environment, I can't start Jupyter to work in a notebook. I can do so without the environment ... to do this, and I will. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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108 views

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python - SQLite date storage and conversion

I am having design problems with date storage/retrieval using Python and SQLite. I understand that a SQLite date ... SQLite3 with Python 3.1. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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195 views

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python - How to handle a Button click event

I'm just learning Python and I have the base concept down, and already a few command line programs. I'm now ... = GUI() guiFrame.mainloop() See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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377 views

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python - pandas read_excel multiple tables on the same sheet

Is it possible to read multiple tables from a sheet excel file using pandas ? Something like: read table1 from row0 ... row 102 until row202 ... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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338 views

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python - floor and ceil with number of decimals

I need to floor a float number with an specific number of decimals. So: 2.1235 with 2 decimals --> 2. ... without having to do the operations. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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