Recent questions tagged Python

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python - Showing page count with ReportLab

I'm trying to add a simple "page x of y" to a report made with ReportLab.. I found this old post ... resulting PDF is missing the images.. 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 - saving figures using plt.savefig on colaboratory

I am using collaboratory(online jupyter notebook) I have the following code i am plotting some graphs using this functions ... .png") 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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357 views

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python - return n smallest indexes by column using pandas

I have the following (simplified) dataframe: df = pd.DataFrame({'X': [1, 2, 3, 4, 5,6,7,8,9,10], 'Y': ... H H What is the best way to do this? See Question&Answers more detail:os...

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

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335 views

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python - Django Serving a Download File

I'm trying to serve a txt file generated with some content and i am having some issues. I'vecreated the temp files ... ['X-Sendfile'] = f.name See Question&Answers more detail:os...

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

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823 views

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python - How to dynamically set default value in WTForms RadioField?

I'm building a website with the Python Flask framework in which I use WTForms. In one form I've got a ... in WTForms? All tips are welcome! See Question&Answers more detail:os...

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

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262 views

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python - How to use Tensorflow Optimizer without recomputing activations in reinforcement learning program that returns control after each iteration?

EDIT(1/3/16): corresponding github issue I'm using Tensorflow (Python interface) to implement a q- ... : AgentLoader.loadAgent(simple_agent()) See Question&Answers more detail:...

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 - Django STATIC_URL is not working

Django version is 1.4. I had read the official document, and googled my problem. first I had followed the official ... html', {'errors':errors}) 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 get dropped file names in PyQt/PySide

I am trying to set up an application that will accept havin files dropped into it. So, I am looking for a ... dropped")) else: event.ignore() See Question&Answers more detail:os...

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

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234 views

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python - Pandas Design Considerations for MultiIndexed Dataframes

The purpose of this question is to further explore MultiIndex dataframes and to ask questions of the best approach ... does not seem optimal. See Question&Answers more detail:os...

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

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407 views

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python - Cython and deepcopy() woes with referenced methods/functions. Any alternative ideas?

I've been playing with Cython recently for the speed ups, but my project inherits a module that has a copy() ... I finish typing this) 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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643 views

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python - PySpark: StructField(..., ..., False) always returns `nullable=true` instead of `nullable=false`

I'm new to PySpark and am facing a strange problem. I'm trying to set some column to non-nullable while loading a CSV ... +----+----+----+ See Question&Answers more detail:os...

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

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477 views

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python - Use Scikit Learn to do linear regression on a time series pandas data frame

I'm trying to do a simple linear regression on a pandas data frame using scikit learn linear regressor. My data ... so no statsmodels for now. See Question&Answers more detail:os...

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

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310 views

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python - Updating h5py Datasets

Does any one have an idea for updating hdf5 datasets from h5py? Assuming we create a dataset like: import h5py import ... to a 3x3 numpy array? See Question&Answers more detail:os...

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

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1.7k views

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python - Parsing a PDF with no /Root object using PDFMiner

I'm trying to extract text from a large number of PDFs using PDFMiner python bindings. The module I wrote ... very much clueless. 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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313 views

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python - Cannot bind to address after socket program crashes

If my program crashes before a socket is closed, the next time I run in, I get an error that looks like ... be garbage collected, and closed)? 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 - How to use ModelMultipleChoiceFilter?

I have been trying to get a ModelMultipleChoiceFilter to work for hours and have read both the DRF and Django Filters ... B OR name == C? See Question&Answers more detail:os...

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

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440 views

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python - matplotlib: update position of patches (or: set_xy for circles)

Inspired by this example I'm trying to write a little matplotlib program that allows the user to drag and drop ... .append(dr) 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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850 views

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python - Converting an image from Cartesian to Polar - Limb Darkening

import numpy as np import cv2 from matplotlib import pyplot as plt img = cv2.imread('C:\Users\not my user ... so I can measure limb darkening. See Question&Answers more detail:os...

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

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419 views

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python - Matplotlib.Pyplot does not show output; No Error

My platform is as follows Centos 6.x (VirtualBox VM running on Win-7 host), Python 2.6.6, Matplotlib 1.3 ... Linux VMs running on WIndows host? See Question&Answers more detail:os...

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

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773 views

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python - Matplotlib: Formatting dates on the x-axis in a 3D Bar graph

Given this 3D bar graph sample code, how would you convert the numerical data in the x-axis to formatted date/ ... ('Amount') 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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465 views

1 answer

python requests upload large file with additional data

I've been looking around for ways to upload large file with additional data, but there doesn't seem to be ... wouldn't recognize the 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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459 views

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python - Run a chord callback even if the main tasks fail

Is it possible to run a chord callback even if the main tasks failed? I've created a chord which I added ... tasks decorator, but no success. See Question&Answers more detail:os...

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

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692 views

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python - Pandas : TypeError: float() argument must be a string or a number

I have a dataframe that contains user_id date browser conversion test sex age country 1 2015-12-03 IE 1 0 M ... help will be much appreciated! 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 decorator to display passed AND default kwargs

I am new to python and decorators and am stumped in writing a decorator which reports not only passed args and ... . Thanks to the Answerers! 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 - Does the order of decorators matter on a Flask view?

I'm using the login_required decorator and another decorator which paginates output data. Is it important which one comes first? See Question&Answers more detail:os...

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

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479 views

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python - list comprehension in exec with empty locals: NameError

Consider the following snippet: def bar(): return 1 print([bar() for _ in range(5)]) It gives an expected ... try to invoke it, it works! See Question&Answers more detail:os...

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

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403 views

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python - Rename columns in PANDAS based on dictionary

I have a dataframe and I would like to rename the columns based on another dataframe that I plan to use as ... you very much four 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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255 views

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python - How to return str from MySQL using mysql.connector?

I'm trying to use MySQL Connector/Python from mysql.com with Python 3. I have tables in UTF-8 coding, and ... : My tables use COLLATE utf8_bin. See Question&Answers more detail:os...

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

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