Recent questions tagged Python

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python - Matplotlib animation: first frame remains in canvas when using blit

I'm trying to plot two rotating ellipses using the Matplotlib animation library, and I managed to get it working ( ... blit=True) plt.show() See Question&Answers more detail:os...

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

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417 views

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python - Selenium random timeout exceptions without any message

Here is what I'm trying to do and most of the time I succeed: Basically I'm signing in on a website ... minutes wait, it throws the exception. 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 - OpenCV Shows Gray Window

I'm trying to display an image using OpenCV. I have the following very basic code: import cv2 img = cv2.imread(' ... be able to see the image... 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 - SQLAlchemy Core - INSERT IGNORE and ON DUPLICATE KEY UPDATE

I'm using SQLAlchemy Core with a MySQL database but am having a hard time finding a solution for INSERT IGNORE / ... links. Is it even possible? See Question&Answers more detail:os...

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

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715 views

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python - How to determine pid of process started via os.system

I want to start several subprocesses with a programm, i.e. a module foo.py starts several instances of bar.py ... be killed print("blubb") 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 - After starting process, how to get parent's PID in the child?

In Python, I start a new process via Popen(), which works fine. Now in the child process I want to ... a solution using only standard libraries. 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 - Can't configure pyQt

When I compile pyQt on Windows 7 it returns an error saying: Traceback (most recent call last): File " ... still occurs. Can anyone 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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python - Geometry must be a Point or LineString error using Cartopy

I'm trying to run a simple Cartopy example: import cartopy.crs as ccrs import matplotlib.pyplot as plt ax = plt ... is Debian Buster. 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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python - Aggregate unique values from multiple columns with pandas GroupBy

I went into countless threads (1 2 3...) and still I don't find a solution to my problem... I have a ... any idea? Thank you very much :) 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 - OpenCV cv2.imshow is not working because of the qt

I am having a problem that I can not use cv2.imshow() because of following error message qt.qpa.plugin: Could not ... I deal with it. Any ideas? See Question&Answers more detail:os...

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

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322 views

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python - Summing over months with pandas

I know there is a simple implementation to do this but I cannot remember the syntax. Have a simple pandas time ... to multindexed by year sums? See Question&Answers more detail:os...

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

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538 views

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python - Multiprocessing - map over list, killing processes that stall above timeout limit

I have a list of elements that I want to modify using multiprocessing. The issue is that ... and kill sometimes_stalling_processing? See Question&Answers more detail:os...

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

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863 views

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python - Compute Euclidean distance between rows of two pandas dataframes

I have two pandas dataframes d1 and d2 that look like these: d1 looks like: output value1 value2 value2 1 100 103 ... have m rows and n columns See Question&Answers more detail:os...

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

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293 views

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python - Using 'reduce' on a list of dictionaries

I'm trying to write a simple Python function that sums all values that have the key as likes. I'm ... exactly does this Python error mean? See Question&Answers more detail:os...

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

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617 views

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python - Create openCV VideoCapture from interface name instead of camera numbers

The normal way to create a videocapture is this: cam = cv2.VideoCapture(n) where n corresponds to the number ... cam.isOpened() returns False). 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 a 3D patch collection in matplotlib?

I'm trying to make a 3D plot in matplotlib with three circles on it, each centered at the origin and ... object has no attribute 'set_sort_zpos' See Question&Answers more detail:os...

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

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279 views

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python - Rounding entries in a Pandas DafaFrame

Using : newdf3.pivot_table(rows=['Quradate'],aggfunc=np.mean) which yields: Alabama_exp Credit_exp Inventory_exp ... the float 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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459 views

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python - ImportError: Missing required dependencies ['numpy']

I was able to run all scripts successfully which is using pandas , but suddenly all my PANDAS SCRIPTS are ... still facing the same 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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python - TypeError: '_io.TextIOWrapper' object is not subscriptable

Getting the error as the title says. Here is the traceback. I know lst[x] is causing this problem but not too ... a file and get the median ) See Question&Answers more detail:os...

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

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371 views

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python - AttributeError: module 'scipy.misc' has no attribute 'toimage'

While executing the below code: scipy.misc.toimage(output * 255, high=255, low=0, cmin=0, cmax=255). ... error persisted. 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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392 views

1 answer

python - Drop a row in a Pandas Dataframe if any column contains a certain value, in said row

If we want to drop a row in which any column has a missing value we can do this: df.dropna(axis = 0, how ... x contains "turtle" so we drop 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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606 views

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python - Resampling Error : cannot reindex a non-unique index with a method or limit

I am using Pandas to structure and process Data. I have here a DataFrame with dates as index, Id and bitrate. I ... or limit Any ideas ? Thnx ! See Question&Answers more detail:os...

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

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409 views

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python - Passing parameters to decorator at runtime

If I create a python decorator function like this def retry_until_true(tries, delay=60): """ Decorator to rety a ... 20 and 30 are variables? 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 - Memory error using openpyxl and large data excels

I have written a script which has to read lot of excel files from a folder (around 10,000). This script loads the ... (two cores, 2,53 GHz). See Question&Answers more detail:os...

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

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581 views

1 answer

python - Removing specific ticks from matplotlib plot

I'm trying to remove the origin ticks from my plot below to stop them overlapping, alternatively just moving them away from ... plot(x, y, 'ro') See Question&Answers more detail:os...

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

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540 views

1 answer

python - Pandas get_dummies on multiple columns

I have a dataset with multiple columns that I wish to one hot encode. However, I don't want to have the ... appear on one of the columns. See Question&Answers more detail:os...

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

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412 views

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python - Determine which Button was pressed in Tkinter?

I'm making a simple little utility while learning Python. It dynamically generates a list of buttons: for method in ... might be able to tell? See Question&Answers more detail:os...

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

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539 views

1 answer

python - Compute inverse of 2D arrays along the third axis in a 3D array without loops

I have an array A whose shape is (N, N, K) and I would like to compute another array B with the same shape where B ... 2])))).transpose(1, 2, 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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