Recent questions tagged Python

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python - How to obtain features' weights

I am dealing with highly imbalanced data set and my idea is to obtain values of feature weights from my ... ,target_train) print clf.coef_ 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 - Splitting a list of dictionaries into several lists of dictionaries

I've been whacking away at this for a while to no avail... Any help would be greatly appreciated. I have: [{'event': ... 'time': 5}] listN = ... 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 - Handling race condition in model.save()

How should one handle a possible race condition in a model's save() method? For example, the following example ... chill out, then try again 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 Celery get task count

I am currently using django with celery and everything works fine. However I want to be able to give the users an ... tasks , just count 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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python - Correctly extract Emojis from a Unicode string

I am working in Python 2 and I have a string containing emojis as well as other unicode characters. I need ... I achieve the desired output? See Question&Answers more detail:os...

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

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601 views

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python - How to convert list of dictionaries into Pyspark DataFrame

I want to convert my list of dictionaries into DataFrame. This is the list: mylist = [ {"type_activity_id":1," ... | null| +-----+ 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 - Average timedelta in list

I want to calculate the avarage timedelta between dates in a list. Although the following works well, I'm wondering if ... / (len(items) - 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 2.7 - Freeze header in pandas dataframe

Is there a way by which I can freeze Pandas data frame header { as we do in excel}.So if its a long ... down!! I am assuming ipython notebook See Question&Answers more detail:os...

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

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248 views

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python - Sort dictionary by multiple values

I have the dictionary {'Bill': 4, 'Alex' : 4, 'Bob' : 3, "Charles": 7} I need to sort this dictionary ... 't seem to get them to sort correctly. 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 - Can't install win32gui

I'm trying to install win32gui with pip but I get an error: C:Users?????>pip install win32gui Collecting win32gui ... it is still not working... See Question&Answers more detail:os...

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

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346 views

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python - Difference between Fasttext .vec and .bin file

I recently downloaded fasttext pretrained model for english. I got two files: wiki.en.vec wiki.en.bin I am ... difference between the two files? See Question&Answers more detail:os...

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

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247 views

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python - Tensorflow causes logging messages to double

So I was playing around with Google's Tensorflow library they published yesterday and encountered an annoying bug that ... .7 versions I tried. See Question&Answers more detail:os...

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

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367 views

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python - Resizing numpy.memmap arrays

I'm working with a bunch of large numpy arrays, and as these started to chew up too much memory ... override the inbuilt resizing checks? 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 - Scikit-learn cross val score: too many indices for array

I have the following code from sklearn.ensemble import ExtraTreesClassifier from sklearn.cross_validation import cross_val_score ... [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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188 views

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python - TensorFlow random_shuffle_queue is closed and has insufficient elements

I'm reading batch of images by getting idea here from tfrecords(converted by this) My images are cifar ... self._traceback = _extract_stack() See Question&Answers more detail:os...

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

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341 views

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python - Running Keras model for prediction in multiple threads

similar to this question I was running an asynchronous reinforcement learning algorithm and need to run model prediction ... this issue on Keras See Question&Answers more detail:os...

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

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483 views

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python - How do I install a .whl file in a PyCharm virtualenv?

The package manager in Project Interpreter doesn't appear to have any way for me to run a pure pip command so ... and not the virtualenv. 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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299 views

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python - Setting GLOG_minloglevel=1 to prevent output in shell from Caffe

I'm using Caffe, which is printing a lot of output to the shell when loading the neural net. I'd like to ... .environ["GLOG_minloglevel"] = "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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684 views

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python - "<method> takes no arguments (1 given)" but I gave none

I am new to Python and I have written this simple script: #!/usr/bin/python3 import sys class Hello: def ... not? What have I done 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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250 views

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python - scrapy from script output in json

I am running scrapy in a python script def setup_crawler(domain): dispatcher.connect(stop_reactor, signal=signals. ... result.json -t json See Question&Answers more detail:os...

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

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380 views

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python - How to implement the having clause in sqlite django ORM

I've written django sqlite orm syntax to retrieve particular set of records: from django.db.models.aggregates import ... if anyone can 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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590 views

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python - How do you index on a jinja template?

I'm passing 3 lists to my jinja template through my python file. list1 = [1,2,3,4] list2 = ['a','b','c' ... like {%for item in list%} {{item}} See Question&Answers more detail:os...

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

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365 views

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python - Decompress bz2 files

I would like to decompress the files in different directories which are in different routes. And codes as below ... .path.join(dirpath,newfile) 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 - How to split an array according to a condition in numpy?

For example, I have a ndarray that is: a = np.array([1, 3, 5, 7, 2, 4, 6, 8]) Now I want ... any better ways instead of traverse it? 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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221 views

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python - Picking unordered combinations from pools with overlap

I have pools of values and I would like to generate every possible unordered combination by picking from certain pools. ... be the way to go. See Question&Answers more detail:os...

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

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345 views

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python - How can I assign/update subset of tensor shared variable in Theano?

When compiling a function in theano, a shared variable(say X) can be updated by specifying updates=[(X, ... udpate subset of shared variables? See Question&Answers more detail:os...

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

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551 views

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python - Flask/Werkzeug, how to return previous page after login

I am using the Flask micro-framework which is based on Werkzeug, which uses Python. Before each restricted page there ... you for 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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506 views

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python - nested dictionaries or tuples for key?

Suppose there is a structure like this: {'key1' : { 'key2' : { .... { 'keyn' : 'value' } ... ... -avoiding alorithms, etc...) Complexity in find See Question&Answers more detail:os...

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

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