Recent questions tagged PYTHON

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python - App Engine: Structured Property vs Reference Property for one-to-many relationship

My background with designing data stores comes from Core Data on iOS, which supports properties having a one-to- ... way to structure my data? 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 - Matplotlib increase spacing between points on x-axis

I'm looking for a way to prevent labels from overlapping. While searching through Stackoverflow I couldn't even ... ) matplotlib.pyplot.close() 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 - Factorial of a matrix elementwise with Numpy

I'd like to know how to calculate the factorial of a matrix elementwise. For example, import numpy as np mat ... 't understand what this means. 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 - Chained comparisons in SQLAlchemy

Python supports chained comparisons: 1 < 2 < 3 translates to (1 < 2) and (2 < 3). I am trying to make ... will be glad to hear other opinions. 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 - Docker unable to install numpy, scipy, or gensim

I am trying to build a Docker application that uses Python's gensim library, version 2.1.0, which is ... tmp/easy_install-ocgjhe9m/numpy-1.13.0/numpy/distutils/command/build_s...

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

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python - How to get the widget's current x and y coordinates?

I'm currently writing a game project as for the game "4 in a row". To make the animation where the picture ... x and y value for a widget. 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 - pandas.read_csv() can apply different date formats within the same column! Is it a known bug? How to fix it?

I have realised that, unless the format of a date column is declared explicitly or semi-explicitly (with dayfirst), ... (imp['day extracted']) 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 - MySQL Connector could not process parameters

I'm trying to loop through an array and insert each element into a table. As far as I can see my ... ) ValueError: Could not process parameters 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 - Setting DataFrame values with enlargement

I have two DataFrames (with DatetimeIndex) and want to update the first frame (the older one) with data from the second ... 17:00:00 2 2 2 2 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 run PyTorch on GPU by default?

I want to run PyTorch using cuda. I set model.cuda() and torch.cuda.LongTensor() for all tensors. Do I ... computations run on GPU by default? 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 string to float pandas

Simple question: I have a dataset, imported from a csv file, containing a string column with numeric values. ... issue? Thanks 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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python - Pandas read_excel() with multiple sheets and specific columns

I'm trying to use pandas.read_excel() to import multiple worksheets from a spreadsheet. If I do not specify ... on which worksheet? 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 - loading an image from cifar-10 dataset

I am using cifar-10 dataset for my training my classifier. I have downloaded the dataset and tried to display ... gave me the following 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 - Error: function() takes at least n arguments (n given)

I'm trying to use SymPy to take residues, in this case the cotangent function. I've got an integrate() ... I have tried restarting the kernel. 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 - Load xlsx file from drive in colaboratory

How can I import MS-excel(.xlsx) file from google drive into colaboratory? excel_file = drive.CreateFile({'id': ... pandas dataframe out of 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 - Convert Chrome history date/time stamp to readable format

I originally posted this question looking for an answer with using python, got some good help, but have still ... to a human readable format? 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 - How can you include annotated results in a serialized QuerySet?

How can you include annotated results in a serialized QuerySet? data = serializer.serialize(Books.objects.filter( ... -td67238.html 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 - running Scrapy but it error: No module named _util

I have installed Scrapy，and import it in python, every things look fine. But it cause error when i try a ... ImportError: No module named _util 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 - render_template from Flask blueprint uses other blueprint's template

I have a Flask app with blueprints. Each blueprint provides some templates. When I try to render the ... ) application.register_blueprint(bp1) 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 - NotFittedError: TfidfVectorizer - Vocabulary wasn't fitted

I am trying to build a sentiment analyzer using scikit-learn/pandas. Building and evaluating the model works, but ... from the model. 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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547 views

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python 2.7 - Python2.7 contextlib.ExitStack equivalent

To programmatically combine context managers I use the following code: == helpers.py == from contextlib import ... nested is deprecated. 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 modify 2d Scatterplot to display color based off third array in csv file?

I am using Python and a CSV file. I am currently trying to modify the scatter plot(2d) below to change colors based on a ... = ',', cmap = ?); 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 copy wsgi.input if I want to process POST data more than once?

In WSGI, post data is consumed by reading the file-like object environ['wsgi.input']. If a second element ... can be processed multiple times? 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 - What determines the sign of m % n for integers?

The modulo in Python is confusing. In Python, % operator is calculating the remainder: >>> 9 % 5 4 However: >>> - ... the result 1? and not -4? 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 you force refresh of a wx.Panel?

I am trying to modify the controls of a Panel, have it update, then continue on with code execution. The problem ... did you resolve it if so? See Question&Answers more detail:os...

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

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329 views

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python - Installed python3, getting command not found error in terminal

I installed python3, I can open idle and it says it is running python3.0.1, but when I enter python3 ... python3 from the terminal? 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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399 views

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python list of numbers converted to string incorrectly

For some reason, when I do the code... def encode(): result2 = [] print result for x in result: result2 += str( ... 123', '456', '789']? 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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380 views

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python - Run py.test test in different process

I'm trying to test tensorflow program. I'm setting up tensorflow session using parametrized py.test fixture: @pytest ... , bias_type): ... See Question&Answers more detail:os...

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

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