Recent questions tagged Python

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python - Specifying data type in Pandas csv reader

I am just getting started with Pandas and I am reading in a csv file using the read_csv() method. The ... modifying the values of the fields? 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 - stopping setup.py from installing as egg

How do I stop setup.py from installing a package as an egg? Or even better, how do I easy_install from installing ... sudo rm -rf boto-xyz.egg 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 - Exception traceback is hidden if not re-raised immediately

I've got a piece of code similar to this: import sys def func1(): func2() def func2(): raise Exception( ... ('test error') Exception: test error 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 - Test discovery failure when tests in different directories are called the same

Using py.test, two tests called the same in different directory causes py.test to fail. Why is that? How can I change 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 - Mean Squared Error in Numpy?

Is there a method in numpy for calculating the Mean Squared Error between two matrices? I've tried searching but ... or use a different lib? 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 - Count number of non-NaN entries in every column of Dataframe

I have a really big DataFrame and I was wondering if there was short (one or two liner) way to get the a count of non ... Output: a: 3 b: 2 d: 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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python - Inserting a string into a list without getting split into characters

I'm new to Python and can't find a way to insert a string into a list without it getting split into individual ... but it has not been my day. 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 - With sqlalchemy how to dynamically bind to database engine on a per-request basis

I have a Pylons-based web application which connects via Sqlalchemy (v0.5) to a Postgres database. For security, ... by a low-security user. 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 - pyspark and HDFS commands

I would like to do some cleanup at the start of my Spark program (Pyspark). For example, I would like to ... to do the same with Pyspark. 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 - Flask: How to manage different environment databases?

I am working on an app which looks similar to facebook/ __init__.py feed/ __init__.py business.py views.py ... for better ideas than I have 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 create Celery Windows Service?

I'm trying to create a Windows Service to launch Celery. I have come across an article that does it using ... launch it as a Windows service? 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 - Basic example for PCA with matplotlib

I trying to do a simple principal component analysis with matplotlib.mlab.PCA but with the attributes of the class ... get there? Thanks, Tyrax 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 - Efficient scheduling of university courses

I'm currently working on a website that will allow students from my university to automatically generate valid ... misleading tag (scheduling). See Question&Answers more detail:os...

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

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241 views

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python - Tornado blocking asynchronous requests

Using Tornado, I have a Get request that takes a long time as it makes many requests to another web service ... updateStatus("3") self.finish() 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 - Using Twython to send a tweet, twitter api error

I'm trying to make python send a tweet for me using Twython but for some reason everything I'm trying ... supplied by @justhalf Thanks SMNALLY 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-allauth social account connect to existing account on login

I have a custom user model and I am using django-allauth for social registration and login. I am trying to connect ... I still want to try 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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304 views

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python - How do you get default headers in a urllib2 Request?

I have a Python web client that uses urllib2. It is easy enough to add HTTP headers to my outgoing ... HTTP request created by urllib2? 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 use a custom SVM kernel?

I'd like to implement my own Gaussian kernel in Python, just for exercise. I'm using: sklearn.svm.SVC( ... = 'ex6data2.mat' svm_class(fileName) 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 are c_state and m_state in Tensorflow LSTM?

Tensorflow r0.12's documentation for tf.nn.rnn_cell.LSTMCell describes this as the init: tf.nn.rnn_cell.LSTMCell ... page in the documentation. 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 - Should I create pipeline to save files with scrapy?

I need to save a file (.pdf) but I'm unsure how to do it. I need to save .pdfs and store them in ... or should I save file in spider instead? 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 and unicode

This is a string I'm getting out of pandas.DataFrame.to_json(), putting it into redis, getting it out of redis elsewhere ... .12.0 tables==3.0.0 See Question&Answers more detail:os...

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

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243 views

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python - Extract cow number from image

every now and then my mom has to shift through these type of photos to extract the number from the ... /2010TextDetection.pdf . Looks prominisn 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 - Using beautifulsoup to extract text between line breaks (e.g. <br /> tags)

I have the following HTML that is within a larger document <br /> Important Text 1 <br /> <br /> ... help would be greatly appreciated. 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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727 views

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python - PySpark - Pass list as parameter to UDF

I need to pass a list into a UDF, the list will determine the score/category of the distance. For now, I ... .lang.Thread.run(Thread.java:745) 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 filter/smooth with SciPy/Numpy?

I am trying to filter/smooth signal obtained from a pressure transducer of sampling frequency 50 kHz. A ... not provide satisfactory results. See Question&Answers more detail:os...

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

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284 views

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python - Tweepy - Exclude Retweets

Ultimate goal is to use the tweepy api search to focus on topics (i.e docker) and to EXCLUDE retweets. I have ... (len(ids))) csvFile.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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394 views

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python - Cython: ImportError: No module named 'myModule': how to call a cython module containing a cimport to another cython nodule?

I'm trying to import a cython module data.pyx into another cython module user.pyx. Everything compile fine, but ... work? Thanks for any 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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347 views

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python - Early stopping with tf.estimator, how?

I'm using tf.estimator in TensorFlow 1.4 and tf.estimator.train_and_evaluate is great but I need early stopping. ... .layers/tf.data, perhaps? See Question&Answers more detail:os...

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

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