Recent questions tagged Python

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python - How to tell if a file is gzip compressed?

I have a Python program which is going to take text files as input. However, some of these files may be gzip ... : # not compressed # ... 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 - NameError: global name 'reduce' is not defined

I'm new to Python. Would you please tell me what's wrong with the following code? When I run it, I got an ... ) if __name__=='__main__': main() 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 specify a configuration file for pylint under windows?

I am evaluating pylint as source code checker and I would like to customize the maximum number of characters on a single ... I can't do it too? 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 - Pytorch: Can't call numpy() on Variable that requires grad. Use var.detach().numpy() instead

I have an error in my code which is not getting fixed any which way I try. The Error is simple, I return a ... . How could I fix it? 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 3.x - TypeError: fit() missing 1 required positional argument: 'y'

I am trying to predict economic cycles using Gaussian Naive Bayes "Classifier". data (input X) : SPY Interest ... resolve this issue /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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python - How to fix: W602 deprecated form of raising exception

If I use pylint (via sublimerlinter) I get following warning message: W602 deprecated form of raising ... raise ValueError, HELPING_EXPLANATION 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 - Sort dataframe by string length

I want to sort by name length. There doesn't appear to be a key parameter for sort_values so I'm not sure how to accomplish ... : [2, 4, 2, 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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python - Psycopg2 on Amazon Elastic Beanstalk

I'm trying upload my project (in python) that uses Psycopg2 for Amazon Elastic Beanstalk. I'm doing this with a ... can I solve this on Amazon? 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 - "System error: new style getargs format but argument is not a tuple" when using cv2.blur

I am just trying to apply a filter to an image using cv2, the opencv python bindings. Here is what my ... not with medianBlur. Any thoughts? 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 - Pycharm - no tests were found?

I've been getting a No tests were found error in Pycharm and I can't figure out why I'm getting it.. ... would be greatly appreciated, 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 - get class name for empty queryset in django

I have empty queryset of model Student students = Students.objects.all() If the above queryset is empty, then ... app name from the queryset? See Question&Answers more detail:os...

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

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362 views

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python - Changing logging's 'basicConfig' which is already set

I am using the logging module in python as: import logging, sys logger= logging.getLogger(__file__) logging.basicConfig ... thing in line 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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896 views

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python - ERROR: Could not build wheels for cryptography which use PEP 517 and cannot be installed directly

I get an error when pip builds wheels for the cryptography package. Error: LINK : fatal error LNK1181: cannot open input ... 3.8 Pip - 19.3.1 See Question&Answers more detail:os...

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

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530 views

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python - How do I close an image opened in Pillow?

I have a python file with the Pillow library imported. I can open an image with Image.open(test.png) But how do ... to save it or delete 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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462 views

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python - Pythonic way to split a list into first and rest?

I think in Python 3 I'll be able to do: first, *rest = l which is exactly what I want, but I'm ... wondering if there's something more elegant. See Question&Answers more detail:os...

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

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408 views

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python - IMDB scrapy get all movie data

I am working on a class project and trying to get all IMDB movie data (titles, budgets. etc.) up until 2016. ... ['item'] = item yield request See Question&Answers more detail:os...

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

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533 views

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python - Any PyQt circular progress bar?

Does anybody know how I can implement circular progress bar on PyQt? Also, I found an existing code: http:// ... == '__main__': main() 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 - Access all variables occurring in a pyomo constraint

I am working on an algorithm in python that needs to modify concrete (mixed-integer nonlinear) pyomo models. In ... has already been asked here. See Question&Answers more detail:os...

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

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294 views

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python - Attendance system using Django

Models attendance_choices = ( ('absent', 'Absent'), ('present', 'Present') ) class Head_of_department( ... value for employee Requirement : 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 - Django Filewrapper memory error serving big files, how to stream

I have code like this: @login_required def download_file(request): content_type = "application/octet-stream" download_name ... any served file. See Question&Answers more detail:os...

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

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343 views

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python - How to merge two large numpy arrays if slicing doesn't resolve memory error?

I have two numpy arrays container1 and container2 where container1.shape = (900,4000) and container2.shape = ( ... without shifting to 64-Bit. See Question&Answers more detail:os...

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

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224 views

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python - Django Create and Save Many instances of model when another object are created

I am designing a game of chess and I would like to initialize the fields with chess figures (State model) after ... ', verbose_name="Czy zbity") See Question&Answers more detail:os...

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

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206 views

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python - How to join nested list of strings and get the result as new list of string?

I am having nested list of strings as: A = [["A","B","C"],["A","B"]] I am trying to join ... sequence item 0: expected str instance, list found See Question&Answers more detail:os...

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

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632 views

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python - cv2.matchTemplate finds wrong template in image

I'm trying to create a program that knows what number is on an image with the following function: def img_in_img( ... png: 6.png: 7.png: See Question&Answers more detail:os...

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

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496 views

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python - tkinter.Tk() error that kills and logoff my MacBook Pro

When I run root=tkinter.Tk() or just Tkinter.Tk() on my Mac it just kills everything ... returned CG error 268435459 See Question&Answers more detail:os...

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

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295 views

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python - How do I connect browser's microphone in my flask app?

I am using speech_recognition module to identify a search query through voice and then open a google chrome page showing ... : print("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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413 views

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python - "object does not have a __dict__, so you can’t assign arbitrary attributes to an instance of the object class."

From https://docs.python.org/3.3/library/functions.html#object object does not have a __dict__, so you can't ... instance of the object class"? See Question&Answers more detail:os...

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

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374 views

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python - How to count the number of objects detected with Template Matching?

I was reading the docs about template matching with opencv and python and in the last part about template matching ... template matching" >>> 19 See Question&Answers more detail:os...

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

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