Recent questions tagged PYTHON

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python - Cmake could not find boost_python

I am trying to build this simple boost python demo from this link on my MacOS High Sierra. Following is the ... . What am I missing 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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193 views

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python - Could random.randint(1,10) ever return 11?

When researching for this question and reading the sourcecode in random.py, I started wondering whether randrange and ... 11, wouldn't 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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510 views

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python - ValueError: Expected object or value when reading json as pandas dataframe

Sample data: { "_id": "OzE5vaa3p7", "categories": [ { "__type": "Pointer", "className": "Category", " ... How to read this json into pandas 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 3.x - How to read and insert bytea columns using psycopg2?

I am working on a Python script to replicate some Postgresql tables from one environment to another (which ... bytea columns using psycopg2? See Question&Answers more detail:os...

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

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456 views

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python - How to use different marker for different point in scatter plot pylab

I want to use the scatter plot function of pylab x = [1,2,3,4,5] y = [2,1,3,6,7] there are ... example, real data have more than 10000 samples See Question&Answers more detail:os...

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

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255 views

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python - Force SymPy to keep the order of terms

I have the following code: from sympy import * init_printing() x,y = symbols('x y') u = Function('u')(x,y) ... . Is there any way to keep order? 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 - Closing files in openpyxl

Neither of these process, as would be expected reading the documentation: worksheet.close() workbook.close() Is ... left hanging in memory. 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 - Error binding parameter 0: probably unsupported type

I can't seem to figure out what is wrong with my code, but I keep getting the: error "binding parameter ... any help would be super appreciated. See Question&Answers more detail:os...

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

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240 views

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python - Can't install PIL

I'm unable to install PIL. When I run pip install PIL I get: Downloading/unpacking PIL Could not find any ... 7, PIP, EC2 Ubuntu machine. See Question&Answers more detail:os...

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

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141 views

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python - Dictionary in a numpy array?

How do I access the dictionary inside the array? import numpy as np x = np.array({'x': 2, 'y': 5}) ... ] Index Error: too many indices for array See Question&Answers more detail:os...

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

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283 views

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python - Change matplotlib line style mid-graph

I'm graphing some data (two lines) and I'd like to change the line style for the portions of the lines ... styles at certain x-axis locations. See Question&Answers more detail:os...

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

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381 views

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python - Django 1.2 Equivalent of QuerySet.query.as_sql()

In Django 1.1 I was able to produce the SQL used by a QuerySet with this notation: QuerySet.query.as_sql( ... equivalent of that method? 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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466 views

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python - pandas read json not working on MultiIndex

I'm trying to read in a dataframe created via df.to_json() via pd.read_json but I'm getting a ValueError. ... was generated in the first place. 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 - Name of files opened by a process in window?

How to print name of file open by some process (PID) in window? Or All Processes (PID) currently open ... not present in TasK-Manager? See Question&Answers more detail:os...

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

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193 views

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python - Is OptionParser in conflict with Sphinx?

I'm trying to write a documentation for my project in Sphinx and whenever Sphinx encounters OptionParser in my ... automodule:: test :members: See Question&Answers more detail:os...

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

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278 views

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python - Embed custom filter definition into jinja2 template?

I'm writing some Jinja2 templates that I'd like to be able to reuse as painlessly as possible in tangentially ... had to make the switch. 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 - ValueError: Data must not be a string

I am trying to do the following with requests: data = {'hello', 'goodbye'} json_data = json.dumps(data) headers ... 's being created by the API. See Question&Answers more detail:os...

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

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189 views

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python - Will results of numpy.as_strided depend on input dtype?

Will the results of numpy.lib.stride_tricks.as_strided depend on the dtype of the NumPy array? This question arises ... results in the above. See Question&Answers more detail:os...

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

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176 views

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python 2.7 - Regex to Match Horizontal White Spaces

I need a regex in Python2 to match only horizontal white spaces not newlines. s matches all whitespaces including ... you have any suggestions? See Question&Answers more detail:os...

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

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194 views

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python - How to update OpenSSL on mac?

I need to ensure that I have OpenSSL version of 1.0.1 or greater to connect to the Salesforce API according ... another way to update OpenSSL? 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 - How can i bulk create in django rest serializer

I used to use allow_add_remove=True which was availabe in django rest 2.0 for writing nestable serializer ... Ideas.objects.bulk_create(books) See Question&Answers more detail:os...

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

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210 views

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python time(milli seconds) calculation

How to calculate milliseconds,from the code below. a = datetime.datetime.now() b = datetime.datetime.now() c = ... .seconds 4 >>> c.microseconds See Question&Answers more detail:os...

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

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312 views

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python - expected dense to have shape but got array with shape

I am getting the following error while calling the model.predict function when running a text classification model in keras ... how to fix 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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731 views

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python 3.x - How to fix ' module 'keras.backend.tensorflow_backend' has no attribute '_is_tf_1''

While training the yolov3 framework, there's always this module error I have tried reinstalling keras and ... no attribute '_is_tf_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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391 views

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python - Django + mod_wsgi. Set OS environment variable from Apache's SetEnv

I need to split Django's development and production settings. I decided that if USKOVTASK_PROD variable is set, ... 's settings. Why? See Question&Answers more detail:os...

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

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205 views

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python - Raise to 1/3 gives complex number

I cannot understand the following output. I would expect Numpy to return -10 (or an approximation). Why is it ... the middle of this tutorial. See Question&Answers more detail:os...

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

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256 views

1 answer

python - Error installing psycopg2==2.6.2

I have problems when I try installing psycopg2==2.6.2. I have installed postgresql 9.6. and I am using ... in /tmp/pip-build-k7nulk7r/psycopg2/ See Question&Answers more detail:os...

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

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184 views

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python - Why does max() sometimes return nan and sometimes ignores it?

This question is motivated by an answer I gave a while ago. Let's say I have a dataframe like this ... NaN sometimes ignored and sometimes not? See Question&Answers more detail:os...

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

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