Recent questions tagged Python

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python - Loading vs linking in Cython modules

While exploring Cython compile steps, I found I need to link C libraries like math explicitly in setup.py. ... it will be dealt automatically. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Where is BeautifulSoup4 hiding?

I did sudo pip install BeautifulSoup4 and got an awfully optimistic response: Downloading/unpacking beautifulsoup4 Running ... the wrong place. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to use pipe in IPython

In a Linux terminal, when the output of one command is too long to read in one page, I can do this: cat ... t want to change the scroll buffer. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - selecting second child in beautiful soup with soup.select?

I have: <h2 id='names'>Names</h2> <p>John</p> <p>Peter</p> now what's the easiest way to get the ... and nth-of-type return the same results. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How can I make a video from array of images in matplotlib?

I have a couple of images that show how something changes in time. I visualize them as many images on ... (not necessarily) with matplotlib See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Unable to install matplotlib on Mac OS X

I'm trying to install matplotlib for graphing applications in Python on Mac OS X. When I run "python setup.py ... /opt/local/lib Any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - sklearn: how to get coefficients of polynomial features

I know it is possible to obtain the polynomial features as numbers by using: polynomial_features.transform(X). ... any list of features. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How do you join all items in a list?

I have a list and it adds each letter of a word one by one to this list, I don't know what will be in the list ... 'o', 'n'] into ['python']. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Creating a method that is simultaneously an instance and class method

In Python, I'd like to be able to create a function that behaves both as a class function and an instance ... ) return _wrapper Thank you Alex! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - (Django) Trim whitespaces from charField

How do I strip whitespaces (trim) from the end of a charField in Django? Here is my Model, as you can ... whitespace (trimming) the name field. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Validation of dependant inlines in django admin

I am using Django 1.4 and I want to set validation rules that compare values of different inlines. I have ... ajax) validation the most simple? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Combine PySpark DataFrame ArrayType fields into single ArrayType field

I have a PySpark DataFrame with 2 ArrayType fields: >>>df DataFrame[id: string, tokens: array<string>, bigrams: ... tokens + df.bigrams) Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to add another feature (length of text) to current bag of words classification? Scikit-learn

I am using bag of words to classify text. It's working well but I am wondering how to add a feature ... to machine learning and scikit learn. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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261 views

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python - Numpy dot too clever about symmetric multiplications

Anybody know about documentation for this behaviour? import numpy as np A = np.random.uniform(0,1,(10,5)) w = ... know exactly what's going on. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Default buffer size for a file on Linux

The documentation states that the default value for buffering is: If omitted, the system default is used. I am ... the buffering for a system? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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575 views

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python - TypeError: list indices must be integers, not dict

My json file look likes this and I'm trying to access the element syslog in a for loop. { "cleanup":{ " ... suggest where I'm going wrong ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Matplotlib: Make all values in range show up on x axis

Could someone please guide me on how should I make sure that all ticks (or maybe a better way to specify will be to ... 20, 30, 40, 50 show up. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Most concise way to select rows where any column contains a string in Pandas dataframe?

What is the most concise way to select all rows where any column contains a string in a Pandas dataframe? For ... a single or list of columns. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Remove null fields from Django Rest Framework response

I have developed an API using django-rest-framework. I am using ModelSerializer to return data of a model. models.py class ... "name": "XYZ" } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python pandas selecting columns from a dataframe via a list of column names

I have a dataframe with a lot of columns in it. Now I want to select only certain columns. I have saved all the ... 'list' Any help on this one? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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304 views

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python - How to use the new support for ANSI escape sequences in the Windows 10 console?

The latest Windows 10 updates include support for ANSI escape sequences in conhost.exe. I have been able to ... escape sequences from Python? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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337 views

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python - Repeat NumPy array without replicating data?

I'd like to create a 1D NumPy array that would consist of 1000 back-to-back repetitions of another 1D array ... treat both arrays as immutable. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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319 views

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python - Loading JSONL file as JSON objects

I want to load a JSONL file as JSON objects in python. Is there an easy way to do so? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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203 views

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python - AppEngine: Query datastore for records with <missing> value

I created a new property for my db model in the Google App Engine Datastore. Old: class Logo(db.Model): ... field values are displayed as . See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Multiple conditions using 'or' in numpy array

So I have these conditions: A = 0 to 10 OR 40 to 60 B = 20 to 50 and I have this code: area1 = N.where ... how do I do 'OR' condition in numpy? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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281 views

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python - Plot numpy datetime64 with matplotlib

I have two numpy arrays 1D, one is time of measurement in datetime64 format, for example: array([2011 ... datetime.datetime from datetime. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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470 views

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python - Airflow default on_failure_callback

In my DAG file, I have define a on_failure_callback() function to post a Slack in case of failure. It works ... dispatch to all of my operators? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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227 views

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python - Is it possible to modify an existing TensorFlow computation graph?

TensorFlow graph is usually built gradually from inputs to outputs, and then executed. Looking at the Python code ... /modify an existing graph? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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