Recent questions tagged Python

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python - Remove one column for a numpy array

I have a numpy array of dimension (48, 366, 3) and I want to remove the last column from the array to make ... integers. I'm using Python v2.6) 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 remove gaps between bars in Matplotlib bar chart

I'm making a bar chart in Matplotlib with a call like this: xs.bar(bar_lefts, bar_heights, facecolor='black', ... using the bar() function? 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 - TypeError: b'1' is not JSON serializable

I am trying to send a POST request as JSON. *email variable is of type "bytes" def request_to_SEND(email, index): ... it that I am doing wrong? 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 - Resizing and stretching a NumPy array

I am working in Python and I have a NumPy array like this: [1,5,9] [2,7,3] [8,4,6] How do I stretch ... wrap my head around what I need 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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python - matplotlib bar chart: space out bars

How do I increase the space between each bar with matplotlib barcharts, as they keep cramming them self to the centre. ... .keys()) 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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python - "lambda" vs. "operator.attrgetter('xxx')" as a sort key function

I am looking at some code that has a lot of sort calls using comparison functions, and it seems like it ... to existing code that 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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python - pip install test dependencies for tox from setup.py

I made my project with setuptools and I want to test it with tox. I listed dependencies in a variable ... txt and the tests_require variable)? 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 can I read tar.gz file using pandas read_csv with gzip compression option?

I have a very simple csv, with the following data, compressed inside the tar.gz file. I need to read that in ... here? How can I fix 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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python - Plot a black-and-white binary map in matplotlib

I'm using python to simulate some automation models, and with the help of matplotlib I'm producing plots like the ... How do I accomplish that? 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 - import input_data MNIST tensorflow not working

TensorFlow MNIST example not running with fully_connected_feed.py I checked this out and realized that input_data was not ... is very out-dated 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 "module 'platform' has no attribute 'linux_distribution'" when installing new packages with Python3.8?

I had Python versions of 2.7 and 3.5. I wanted the install a newer version of Python which is python 3. ... to my new version of Python? 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 - Is there a test suite for numpy / scipy?

I'm about to reinstall numpy and scipy on my Ubuntu Lucid. As these things carry quite a few dependencies ... worse, silently produce nonsence). 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 the common name for a pytz timezone eg. EST/EDT for America/New_York

Given a pytz timezone for a particular user(calculated from his offset), i want to display the common name for ... to showing EDT during others. 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 - Add number to set

What am I doing wrong here? a = set().add(1) print a # Prints `None` I'm trying to add the number 1 to the empty set. 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 dataframe remove constant column

I have a dataframe that may or may not have columns that are the same value. For example row A B 1 9 ... columns exist and then remove them? See Question&Answers more detail:os...

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

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180 views

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python - TypeError: Image data can not convert to float

I am trying to create a 16-bit image like so: import skimage import random from random import randint xrow= ... can not convert to float. 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 - Returning distinct rows in SQLAlchemy with SQLite

SQLAlchemy's Query.distinct method is behaving inconsistently: >>> [tag.name for tag in session.query(Tag).all()] ... obvious that I'm missing? See Question&Answers more detail:os...

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

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415 views

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python - How to delete rows from a table using an SQLAlchemy query without ORM?

I'm writing a quick and dirty maintenace script to delete some rows and would like to avoid having to bring my ... should I be going about 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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python - String function to strip the last comma

Input str = 'test1,test2,test3,' Ouput str = 'test1,test2,test3' Requirement to strip the last occurence of ',' See Question&Answers more detail:os...

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

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154 views

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python - Command line execution in different folder

I'm calling a command line program in python using the os.system(command) call. How can I call this ... after execution, change restore 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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503 views

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python - Getting "cannot write mode P as JPEG" while operating on JPG image

I am trying to resize some images, most of which are JPG. But in a few images, I am getting the error: ... . How can I resolve the issue? See Question&Answers more detail:os...

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

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296 views

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python - Twython search API with next_results

I'm a bit confused about the search API. Let's suppose I query for "foobar", the following code: from ... and perform a brand new query? 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 - Natural language time parser

I'm trying to parse strings containing (natural language) times to hh:mm time objects? For example: "ten past ... working on my own parser? 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 change audio playback speed using Pydub?

I am new learner of audio editing libs - Pydub. I want to change some audio files' playback speed using ... without changing the audio quality.) See Question&Answers more detail:os...

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

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368 views

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python - Enumeration of combinations of N balls in A boxes?

I want to enumerate all possible combinations of N balls in A boxes. example: I have 8 balls to deal ... language. thanks for all contributions! See Question&Answers more detail:os...

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

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292 views

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python - Using pandas to efficiently read in a large CSV file without crashing

I am trying to read a .csv file called ratings.csv from http://grouplens.org/datasets/movielens/20m/ the ... is written others are written-off See Question&Answers more detail:os...

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

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472 views

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python - Pandas trim leading & trailing white space in a dataframe

develop a function that Trims leading & trailing white space. here is a simple sample, but real file ... possible situations. 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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523 views

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python - MemoryError when running Numpy Meshgrid

I have 8823 data points with x,y coordinates. I'm trying to follow the answer on how to get a scatter dataset ... and how can I fix 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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