Recent questions tagged Python

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python 2.7 - OpenCV Color Segmentation Using Kmeans

I'am trying to use threshold for segmentation color. but it's not doesn't work. how can i segmentation ... .waitKey(0) cv2.destroyAllWindows() 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 - Replacing newlines with spaces for str columns through pandas dataframe

Given an example dataframe with the 2nd and 3rd columns of free text, e.g. >>> import pandas as pd >>> ... there must be a better/simpler way. 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 - Sleep is not working on pyqt4

I have got this problem. I′m trying to set text on a lineEdit object on pyqt4, then wait for a few seconds and ... show() sys.exit(app.exec_()) 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 - How to open hyperlink with target="_blank" in PyQtWebEngine?

I have made a web browser using pyqt5 and PyQtWebEngine.It works fine but when I click on a hyperlink with target=" ... and tell me what to do See Question&Answers more detail:os...

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

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902 views

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python - cannot find reference for opencv functions in pycharm

I have opencv-python installed and the .pyd file is added in the site-packages and the DLLs. The code works ... via pip in the command prompt. 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 - unicode error when saving an object in django admin

In my django app, I have some objects that cause the corresponding URL in the django admin to be non ascii. ... to retrieve the object safely? See Question&Answers more detail:os...

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

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721 views

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python - How can I write to Big Query using a runtime value provider in Apache Beam?

EDIT: I got this to work using beam.io.WriteToBigQuery with the sink experimental option turned on. I ... logging.error(exception) pass See Question&Answers more detail:os...

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

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379 views

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python - Splitting dict by value of one of the keys

I've got a dictionary with data of the same length (but different types), something like: data = { "id": [1, ... is a Pythonic way of doing 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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python - finding an exact match for string

I used the following function to find the exact match for words in a string. def exact_Match(str1, word ... with hyphens and other punctuations? 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 - Django - objects.values() and prefetch_related() in same query

I have Book, Profile, Book_stat model as below. I am trying to minimize the fields from Book model and prefetch_related ... rating: 3.50 } } ] See Question&Answers more detail:os...

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

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401 views

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python - Merge 3 lists into 1 list

I want to merge 3 lists in to a single list. For example, I have three lists: a = [0, 3, 6, 9] b = [ ... merged.append(b[i]) merged.append(c[i]) See Question&Answers more detail:os...

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

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563 views

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python - cx_freeze fails to create exe with pandas library

Having problems creating exe using cx_freeze with a Pandas library. I have seen lots of others having issues ... anaconda windows 8 machine. See Question&Answers more detail:os...

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

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577 views

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python - Exporting a Keras model as a TF Estimator: trained model cannot be found

I encountered the following issue when trying to export a Keras model as a TensorFlow Estimator with the purpose of ... trained model at ./tf. See Question&Answers more detail:os...

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

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410 views

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python - Checking for sublist in list

The Question is: You are to write a function, called isSublist(), which takes two arguments (list, sublist) and returns ... 1,2,3]) output: 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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711 views

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python - Paramiko get sorted directory listing

I am able to get a directory listing from Paramiko. And with listdir_attr I get the attributes. However, I need ... that is sorted by filename? See Question&Answers more detail:os...

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

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582 views

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python - Why does manage.py execution script run twice when using it under if __name__ == "__main__"

Goal. When launching django framework also launch other PY scripts that rely on django objects. Get the server and ... me know. Thanks everyone. See Question&Answers more detail:os...

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

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516 views

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python - getsizeof returns the same value for seemingly different lists

I have the following two dimensional bitmap: num = 521 arr = [i == '1' for i in bin(num)[2:].zfill ... /bool (no difference for int and boolean) See Question&Answers more detail:os...

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

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334 views

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python 2.7 - Access base class attribute in derived class - in "class scope"

class Outer(object): class InnerBase(object): _var = {'foo', 'bar'} class Derived(InnerBase): _var = _var | {' ... as to why it's not 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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2.1k views

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python - pyodbc on google colab

I am trying to connect to my SQL server on google colab by using pyodbc. However, it tells me that I cannot ... how to make it work? 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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1.4k views

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python - Django filter current month data

I want to filter current month data. I tried this. this_month = datetime.datetime.now().month products ... models.DateTimeField(auto_now=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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438 views

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python - cursor.execute("INSERT INTO im_entry.test ("+entrym+") VALUES ('"+p+"');")

entrym='entry' entrym=entrym+ str(idx) cursor.execute("INSERT INTO im_entry.test ("+entrym+") VALUES ('"+p+"' ... is wrong here? Please 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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647 views

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python - Event for text in Tkinter text widget

May I know is it possible to create a event for a text in tkinter text widget? Example, I click on a word ... a brief definition of the word. See Question&Answers more detail:os...

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

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654 views

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python - Split a dataframe column's list into two dataframe columns

I'm effectively trying to do a text-to-columns (from MS Excel) action, but in Pandas. I have a dataframe ... ? Thanks in advance 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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371 views

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python - Extracting the hour from a time column in pandas

Suppose I have the following dataset: How would I create a new column, to be the hour of the time? For example, the ... %H:%M:%S') print(t.hour) See Question&Answers more detail:os...

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

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457 views

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python - Private messaging using sockjs-tornado

I have implemented chat feature using sockjs-tornado and could store the messages in RethinkDB. Could you please help ... 1.8.4 and Rethinkdb See Question&Answers more detail:os...

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

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377 views

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python - How do you create a LabelFrame with a scrollbar in Tkinter?

I'm using Python and Tkinter to create a GUI for a program I'm writing, and I'm having a couple of ... information (but be specific). 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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358 views

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python - Converting multiple tab-delimited .txt files into multiple .xls files

I am a newbie to python and I am trying to do what the title above says with the code displayed below. It runs ... + ".xls") print "Done" 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 - Getting boto.exception.S3ResponseError: S3ResponseError: 403 Forbidden when uploading file

There are a few other questions on this issue: boto.exception.S3ResponseError: S3ResponseError: 403 Forbidden ... to diagnose further? See Question&Answers more detail:os...

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

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