Recent questions tagged Python

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python - Remove repeating characters from words

I was wondering what is the best way to convert something like "haaaaapppppyyy" to "haappyy". Basically, when parsing ... m using Python + nltk. See Question&Answers more detail:os...

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

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308 views

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python - Duplicating training examples to handle class imbalance in a pandas data frame

I have a DataFrame in pandas that contain training examples, for example: feature1 feature2 class 0 0.548814 0.791725 1 ... may be more than 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 - sphinx.ext.autodoc: Keeping names of constants in signature

I'm using Sphinx's autodoc feature to document my API. Example: DEFAULT_OPTION = 'default' def do_something(msg ... all signature by hand 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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340 views

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python - How can I draw nodes and edges in PyQT?

In PyQT, how can I plot small "Nodes" at given points and connect them with edges? All of the PyQT tutorials I ... a button! plot a checkbox!" See Question&Answers more detail:os...

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

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518 views

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python - How to plot an image with non-linear y-axis with Matplotlib using imshow?

How can I plot an 2D array as an image with Matplotlib having the y scale relative to the power of two of ... cannot hold so much information... 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 - Wildcards in column name for MySQL

I am trying to select multiple columns, but not all of the columns, from the database. All of the columns I want ... to say SELECT * NOT XYZ? 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 - if statement without a condition

def f1(x,y): if x: x = [1,2,3] x.append(4) else: x = 2 return x + y L1 = [1,2,3] L2 = ... sense of this? and what is it doing in this fuction? See Question&Answers more detail:os...

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

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239 views

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python - Getting boolean pandas column that supports NA/ is nullable

How can I create a pandas dataframe column with dtype bool (or int for that matter) with support for Nan/ ... comparing, rounding errors, etc.) See Question&Answers more detail:os...

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

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356 views

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python - Computing Eulers Totient Function

I am trying to find an efficient way to compute Euler's totient function. What is wrong with this code? It ... else: continue return int(y) See Question&Answers more detail:os...

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

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316 views

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python - Tensorflow Object Detection API on Windows - error "ModuleNotFoundError: No module named 'utils'"

I'm attempting to get the TensorFlow Object Detection API https://github.com/tensorflow/models/tree/master/research ... and it will 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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python - how to solve "bad interpreter: Too many levels of symbolic links"

I am trying to install numpy in a virtual environment that I created. I used the following series of commands to ... python version is 2.7.6. See Question&Answers more detail:os...

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

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354 views

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python - How to ensure that README.rst is valid?

There are two version of my little tool: https://pypi.python.org/pypi/tbzuploader/2017.11.0 https://pypi.python. ... s is not the question :-) 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 argument unpacking use iteration or item-getting?

I'm using Python 2.7.3. Consider a dummy class with custom (albeit bad) iteration and item-getting behavior: class ... i in range(len(args))]) See Question&Answers more detail:os...

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

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858 views

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python - Django: How to replace/overwrite/update/change a file of FileField?

In Django, I have the following model: from django.db import models from django.core.files.base import File ... but with no satisfying answer. See Question&Answers more detail:os...

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

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264 views

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python - Custom Logger class and correct line number/function name in log

I'd like to wrap Python logger in a custom class to embed some application-specific functionality and hide ... possible? Thanks in advance. 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 - Get Gradients with Keras Tensorflow 2.0

I would like to keep track of the gradients over tensorboard. However, since session run statements are not a thing ... the value of a tensor. 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 - Obtain & manipulate bit pattern of float as integer

In Python 2.5, I have a float and I'd like to obtain and manipulate its bit pattern as an integer. ... bitwise operations) on that bit pattern? See Question&Answers more detail:os...

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

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357 views

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python - How to install pycairo on osx?

I am trying to install the pycairo (Python bindings for the cairo graphics library) under OSX. I started with ... 't darwin more like linux? See Question&Answers more detail:os...

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

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198 views

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python - Equivalent Nested Loop Structure with Itertools

Python's succint syntax through its batteries allows verbose code line to be expressed in readable one ... equivalent itertools notation? See Question&Answers more detail:os...

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

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253 views

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python - What are ngram counts and how to implement using nltk?

I've read a paper that uses ngram counts as feature for a classifier, and I was wondering what this exactly ... implement a version of my own? See Question&Answers more detail:os...

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

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1.4k views

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python - NotImplementedError: Cannot convert a symbolic Tensor (lstm_2/strided_slice:0) to a numpy array. T

tensorflow version 2.3.1 numpy version 1.20 below the code # define model model = Sequential() model.add(LSTM(50 ... seems to me a crazy 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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197 views

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python - What is the difference between combine_first and fillna?

These two functions seem equivalent to me. You can see that they accomplish the same goal in the code below, ... column values into new column See Question&Answers more detail:os...

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

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318 views

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python - How does __slots__ avoid a dictionary lookup?

I've heard that __slots__ makes objects faster by avoiding a dictionary lookup. My confusion comes from ... make accessing objects faster? See Question&Answers more detail:os...

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

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893 views

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python - docker _tkinter.TclError: couldn't connect to display

ubuntu 16.04 , nvidia-docker installed, a tensorflow container running, python 2.7 i want to run a simple python ... give me advice about 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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330 views

1 answer

python - Reconstructing an image after using extract_image_patches

I have an autoencoder that takes an image as an input and produces a new image as an output. The input ... please explain what happened :( See Question&Answers more detail:os...

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

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151 views

1 answer

python - How to convert characters like x22 into a string?

I have a string that looks like this: "{\x22username\x22:\x229\x22,\x22password\x22:\x226\x22,\x22id\x22 ... with quotes around keys and values? See Question&Answers more detail:os...

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

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393 views

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python - Why doesn't groupby sum convert boolean to int or float?

I'll start with 3 simple examples: pd.DataFrame([[True]]).sum() 0 1 dtype: int64 pd.DataFrame( ... gives consistent results for either scenario. 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

1 answer

python - Sklearn Label Encoding multiple columns pandas dataframe

I try to encode a number of columns containing categorical data ("Yes" and "No") in a large pandas dataframe. ... anyone know how to do 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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