Recent questions tagged python

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python 3.x - How to cast a string to bytes without encoding

I have a bunch of binary data that comes to python via a char* from some C interface (not under my control) ... reading but no proof thus far). 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 remove a file after closing it, "being used by another process"

I am trying to remove a file after reading from it, but getting "WindowsError: [Error 32] The process cannot ... panicked when it wouldn't run See Question&Answers more detail:os...

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

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398 views

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python - Problems implementing an XOR gate with Neural Nets in Tensorflow

I want to make a trivial neural network, it should just implement the XOR gate. I am using the TensorFlow library, ... I should do 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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python - Interpolating a 3D surface known by its corner nodes and coloring it with a colormap

I want to construct a 3D representation of experimental data to track the deformation of a membrane. Experimentally, only ... abs(yi).max())) 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 - PyQt QPushButton Background color

I have the follow code: self.pushButton = QtGui.QPushButton(Form) self.pushButton.setGeometry(QtCore.QRect(0, 550, ... Any help would be great. 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 int() object uses "==" operator without __eq__() method in python2?

Recently I read the "Fluent python" and understood how == operator works with python objects, using __eq__() method ... a.__eq__(b) returns True 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 Install the latest version of seaborn

I want to create a catplot using seaborn package and I know that in order to be able to do that I need ... Can anyone please assist with 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 - How to create a traceback object

I want to create a traceback like the one returned by sys.exc_info()[2]. I don't want a list of lines, ... the caller is the most recent call. 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 - getattr() versus dict lookup, which is faster?

A somewhat noobish, best practice question. I dynamically look up object attribute values using object.__dict__[some_key ... 'name'] 'an_object' 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 - Does tensorflow map_fn support taking more than one tensor?

Does tf.map_fn support taking more than one tensors as is supported by python's native map function (example provided below) ... 18, 14, 14, 14] See Question&Answers more detail:os...

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

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527 views

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python - How to combine multiple numpy masks

m1 = [0,1,1,3] m2 = [0,0,1,1] data = [10,20,30,40] I want to do something like this: mask ... return 30 Note, this example results in an 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 - How to make TF-IDF matrix dense?

I am using TfidfVectorizer to convert a collection of raw documents to a matrix of TF-IDF features, which I ... 'scipy.sparse.csr.csr_matrix'> 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 - Error message for virtualenvwrapper on OS X Lion

I've used homebrew to install python on a new Mac Lion installation, and have been trying to install virtualenv and ... ="/usr/local/bin/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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485 views

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python - Save image created via PIL to django model

I have successfully created and rotated an image that was uploaded via email to a directory on my server ... would be greatly 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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698 views

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python subprocess.call() "no such file or directory"

I've found a few questions on the module but the more common problem seems to be getting the argument list ... without specifying the full path. See Question&Answers more detail:os...

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

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495 views

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python - Dependencies between files with pytest-dependency?

I'm working on a functional test suite using pytest with pytest-dependency. I 99% love these tools, but I can't ... be honest, I'd deserve 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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632 views

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python - Pandas datetime column to ordinal

I'm trying to create a new Pandas dataframe column with ordinal day from a datetime column: import pandas as ... time column for my dataframe? See Question&Answers more detail:os...

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

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459 views

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python - How to create a Tensorflow Tensorboard Empty Graph

launch tensorboard with tensorboard --logdir=/home/vagrant/notebook at tensorboard:6006 > graph, it says No graph ... to make it standout See Question&Answers more detail:os...

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

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624 views

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python - I cant init Google Cloud SDK on Ubuntu

I downloaded Google Cloud SDK for python on my Ubuntu. (https://cloud.google.com/sdk/docs/quickstart-linux#before-you ... 7.5MB) Thanks ! Ariel See Question&Answers more detail:os...

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

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649 views

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python - Why cannot numpy arrays convert from datetime to np.datetime64 implicitly?

Say, I have a datetime: given_time = datetime(2013, 10, 8, 0, 0, 33, 945109, tzinfo=psycopg2.tz. ... require unit in np.datatime64 constructor. See Question&Answers more detail:os...

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

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602 views

1 answer

python - CSV Exports - Ordering of columns using scrapy crawl -o output.csv

Is there a way to specify the order of the columns in a CSV output using the -o parameter? It seems to ... get populated in the scrape. 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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502 views

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python - Convert to UTC Timestamp

//parses some string into that format. datetime1 = datetime.strptime(somestring, "%Y-%m-%dT%H:%M:%S") //gets ... = timeInSeconds * 1000 :) See Question&Answers more detail:os...

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

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313 views

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python - Find where a NumPy array is equal to any value in a list of values

I have an array of integers and want to find where that array is equal to any value in a list of multiple ... function with a loop in 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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793 views

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python - Pandas - Add seconds from a column to datetime in other column

I have a dataFrame with two columns, ["StartDate" ,"duration"] the elements in the StartDate column are ... rows performing the operation ). See Question&Answers more detail:os...

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

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555 views

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python - How do I count the trailing zeros in integer?

I am trying to write a function that returns the number of trailing 0s in a string or integer. Here is what I am ... x i += 1 else: return x See Question&Answers more detail:os...

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

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588 views

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python - Checkout or list remote branches in GitPython

I don't see an option to checkout or list remote/local branches in this module: https://gitpython.readthedocs.io/en/stable/ See Question&Answers more detail:os...

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

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532 views

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python - Representation of all values in Flag enum

I would like to have a "ALL" flag in my python Flags enum for which myenum.EVERY_MEMBER & myenum.ALL == myenum. ... to python 3.6 or later. See Question&Answers more detail:os...

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

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334 views

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python - Reason why numpy rollaxis is so confusing?

The behavior of the numpy rollaxis function confuses me. The documentation says: Roll the specified axis backwards, ... the given start index? See Question&Answers more detail:os...

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

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