Recent questions tagged Python

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python - What is the correct way to replace matplotlib tick labels with computed values?

I have a figure with a log axis and I would like to relabel the axis ticks with logs of the values, ... computed from the original tick values? See Question&Answers more detail:os...

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

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223 views

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python - Session generation from log file analysis with pandas

I'm analysing a Apache log file and I have imported it in to a pandas dataframe. '65.55.52.118 - - [30/ ... : 31975, Freq: None, Timezone: None See Question&Answers more detail:os...

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

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871 views

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python - ValueError: not enough values to unpack (expected 4, got 1)

from sys import argv script, first, second, third = argv print("The script is called: ", script) print("The first ... how to fix it. Thank you! See Question&Answers more detail:os...

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

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305 views

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python - Can't install Orange: "error: command 'clang' failed with exit status 1"

I am trying to install Orange on my Mac OS X 10.7.3 (Lion) and I keep getting an error when using either ... 'clang' failed with exit status 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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567 views

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python - Plotting words frequency and NLTK

I have a file with various words, which I want to count the frequency of each word in the document ... started around stopped stopped started 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 - dask DataFrame equivalent of pandas DataFrame sort_values

What would be the equivalent of sort_values in pandas for a dask DataFrame ? I am trying to scale some Pandas code ... , col2], sorted=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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python - multiprocessing.pool.map and function with two arguments

I am using multiprocessing.Pool() here is what i want to Pool: def insert_and_process(file_to_process,db): db = DAL( ... and let you guys know. 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 scipy.odrpack.odr example (with sample input / output)?

I am a satisfied user of scipy.optimize.leastsq. I now have -- really have always had -- x,y data with ... the routine a lot. Thanks! Bill See Question&Answers more detail:os...

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

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288 views

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python - How to update a subset of a MultiIndexed pandas DataFrame

I'm using a MultiIndexed pandas DataFrame and would like to multiply a subset of the DataFrame by a certain number ... ? Thanks in advance, Rob See Question&Answers more detail:os...

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

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281 views

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python - How do I pass parameters via url in django?

I am trying to pass a parameter to my view, but I keep getting this error: NoReverseMatch at /pay/how Reverse ... a POST request, not GET. See Question&Answers more detail:os...

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

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250 views

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python - nltk StanfordNERTagger : NoClassDefFoundError: org/slf4j/LoggerFactory (In Windows)

NOTE: I am using Python 2.7 as part of Anaconda distribution. I hope this is not a problem for nltk 3.1. ... 13slf4j-1.7.13 anything wrong 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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363 views

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python - Group by hour in SQLAlchemy?

How do I group query results by the hour part of a datetime column in SQLAlchemy? See Question&Answers more detail:os...

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

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308 views

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python - Making histogram with Spark DataFrame column

I am trying to make a histogram with a column from a dataframe which looks like DataFrame[C0: int, C1: ... because of mismatch in data types. See Question&Answers more detail:os...

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

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280 views

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python - How to properly interact with a process using subprocess module

I'm having problems redirecting stdio of another program using subprocess module. Just reading from stdout ... proc_read: print proc_read See Question&Answers more detail:os...

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

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273 views

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python - Installing numpy on Amazon EC2

I am having trouble installing numpy on an Amazon EC2 server. I have tried using easy_install, pip, pip inside a ... want to get it installed. See Question&Answers more detail:os...

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

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383 views

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python - Convert unicode string to byte string

I get a string from a function that is represented like u'xd0xbcxd0xb0xd1x80xd0xbaxd0xb0', but to process it I need ... represented as 'xd0'. 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 - What is itertools.groupby() used for?

While reading the python documentation I came across the itertools.groupby() function. It was not very ... observations for comments. 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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529 views

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python - Do newly created conda envs inherit all packages from the base env?

I installed Anaconda and created a new env ("dell_proj"). Then I created a new Project in Pycharm with my ... what I'm misunderstanding 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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302 views

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python - Loop through dates except for weekends

So I have a script that has date arguments for different functions and I want it to loop through 01-01-2012 ... loop in the proper order 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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375 views

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python - How to mpf an array?

I have: import numpy as np from mpmath import * mpf(np.array(range(0,600))) But it won't let me do it ... an mpf array to hold these numbers? See Question&Answers more detail:os...

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

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182 views

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python - Downloading the files(which are uploaded) from media folder in django 1.4.3

I am using django to design the basic web pages that handles the uploading and downloading of the files to/from the ... from the file 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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377 views

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python - Chunking Stanford Named Entity Recognizer (NER) outputs from NLTK format

I am using NER in NLTK to find persons, locations, and organizations in sentences. I am able to produce the ... Party')/u'ORGANIZATION' 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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398 views

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python - Listen to keypress with asyncio

Can somebody provide a sample of code which listen to keypress in nonblocking manner with asynio and put the ... about some graphical toolkit 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 - Django ForeignKey limit_choices_to a different ForeignKey id

I'm trying to limit Django Admin choices of a ForeignKey using limit_choices_to, but I can't figure out ... of the category ForeignKey somehow? See Question&Answers more detail:os...

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

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359 views

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python - How do you click on an element which is hidden using Selenium WebDriver?

I have a web application which I am automating using WebDriver and Python. The issue is that there is a menu ... they differ with my situation. See Question&Answers more detail:os...

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

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282 views

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python - Flask-WTF / WTForms with Unittest fails validation, but works without Unittest

When I run app normally and do login in browser, it works. But with Unittest it won't log me in .... ... -> if form.validate_on_submit(): (Pdb) See Question&Answers more detail:os...

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

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625 views

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python - Tkinter Hovering over Button -> Color change

Is there a possibility to change the background-color of a Button after hovering on it? What is the code for this in Tkinter? See Question&Answers more detail:os...

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

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607 views

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python - Using numpy to efficiently convert 16-bit image data to 8 bit for display, with intensity scaling

I frequently convert 16-bit grayscale image data to 8-bit image data for display. It's almost always ... numpy.uint8) print(display_this_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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