Recent questions tagged Python

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python - list extend() to index, inserting list elements not only to the end

I'm looking for the most pythonic way to implement a version of the list extend function, where it extends to a ... could be easier. Could 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 - Official abbreviation for: import scipy as sp/sc

I've seen both: import scipy as sp and: import scipy as sc Is there an official preference listed anywhere? ... t actually specify sp over sc. 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 does v differ from x0b or x0c?

Typing string.whitespace gives you a string containing all whitespace characters defined by Python's string module: ' ... over the simpler v? 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 3.1 | Admin page appearance issue

Today I have updated Django to latest version 3.1. But for some reason when the logged in to admin page, ... admin page. 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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python - Print an error message without printing a traceback and close the program when a condition is not met

I've seen similar questions to this one but none of them really address the trackback. If I have a class ... to implement something like 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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587 views

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python - Returning None or a tuple and unpacking

I am always annoyed by this fact: $ cat foo.py def foo(flag): if flag: return (1,2) else: return None ... one I present ? *variables maybe ? 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 - Draw graph in NetworkX

I'm trying to draw any graph in NetworkX, but get nothing, not even errors: import networkx as nx import ... nx.petersen_graph() nx.draw(g1) 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 - numpy: multiply arrays rowwise

I have those arrays: a = np.array([ [1,2], [3,4], [5,6], [7,8]]) b = np.array([1,2,3,4] ... not be broadcast together with shapes (4,2) (4) 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's the best way to sum all values in a Pandas dataframe?

I figured out these two methods. Is there a better one? >>> import pandas as pd >>> df = pd.DataFrame ... 'm not missing something more obvious. 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 get a uniform distribution in a range [r1,r2] in PyTorch?

I want to get a 2-D torch.Tensor with size [a,b] filled with values from a uniform distribution (in range [r1,r2]) in PyTorch. See Question&Answers more detail:os...

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

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366 views

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python - Getting 'str' object has no attribute 'get' in Django

views.py def generate_xml(request, number): caller_id = 'x-x-x-x' resp = twilio.twiml.Response() with ... have just started to learn Django. See Question&Answers more detail:os...

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

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328 views

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python - Failure to use adaptiveThreshold: CV_8UC1 in function adaptiveThreshold

I have used openCV python and encountered an error. img_blur = cv2.medianBlur(self.cropped_img,5) ... install something else? See Question&Answers more detail:os...

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

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607 views

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python - Tensorflow._api.v2.train has no attribute 'AdamOptimizer'

When using model.compile(optimizer = tf.train.AdamOptimizer(), loss = 'sparse_categorical_crossentropy', metrics=['accuracy ... the TF version? See Question&Answers more detail:os...

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

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553 views

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python - Is it possible to change the model name in the django admin site?

I am translating a django app and I would like to translate also the homepage of the django admin site. On this ... anybody know how to do that? See Question&Answers more detail:os...

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

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840 views

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python - TypeError: 'list' object cannot be interpreted as an integer

The playSound function is taking a list of integers, and is going to play a sound for every different ... would be very 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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307 views

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python - What does python3 open "x" mode do?

What does the new open file mode "x" do in python 3? here is the doc of python 3: 'r': open for ... I right? Is this the only difference? See Question&Answers more detail:os...

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

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407 views

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python - Built-in module to calculate the least common multiple

I am currently using a function that accepts two numbers and uses a loop to find the least common multiple of ... of writing a custom function? See Question&Answers more detail:os...

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

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436 views

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python - How to elementwise-multiply a scipy.sparse matrix by a broadcasted dense 1d array?

Suppose I have a 2d sparse array. In my real usecase both the number of rows and columns are much bigger (say 20000 ... on the columns of 'a'? See Question&Answers more detail:os...

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

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556 views

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python - pip install - killed

I'm trying to install package with pip on Ubuntu server: $ pip install MySQLdb Downloading/unpacking MySQLdb Killed ... about 150 mb free RAM. See Question&Answers more detail:os...

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

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229 views

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python - How do I get the string with name of a class?

What method do I call to get the name of a class? See Question&Answers more detail:os...

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

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477 views

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python - Testing logging output with pytest

I am trying to write a test, using pytest, that would check that a specific function is writing out a warning ... !' from within test_func()? See Question&Answers more detail:os...

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

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1.2k views

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python - ValueError: object too deep for desired array while using convolution

I'm trying to do this: h = [0.2,0.2,0.2,0.2,0.2] Y = np.convolve(Y, h, "same") Y looks like ... convolve function does not see Y as a 1D 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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725 views

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python - Argparse"ArgumentError: argument -h/--help: conflicting option string(s): -h, --help"

Recently, I am learning argparse module, Argument error occurred below the code import argparse import sys class ExecuteShell ... can I 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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372 views

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python - Still can't install scipy due to missing fortran compiler after brew install gcc on Mac OS X

I have read and followed this answer to install scipy/numpy/theano. However, it still failed on the same error of ... What else should I do? See Question&Answers more detail:os...

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

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285 views

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python - Convert ndarray from float64 to integer

I've got an ndarray in python with a dtype of float64. I'd like to convert the array to be an array of integers. ... 's the best way 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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1.1k views

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python - unsupported operand type(s) for *: 'float' and 'Decimal'

I'm just playing around learning classes functions etc, So I decided to create a simple function what should give ... why this should not work! See Question&Answers more detail:os...

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

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372 views

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python - Pymysql Insert Into not working

I'm running this from PyDev in Eclipse... import pymysql conn = pymysql.connect(host='localhost', port=3306, user= ... in red if the code fails. See Question&Answers more detail:os...

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

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529 views

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python - Case insensitive argparse choices

Is it possible to check argparse choices in case-insensitive manner? import argparse choices = ["win64", "win32"] ... from 'win64','win32') See Question&Answers more detail:os...

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

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