Recent questions tagged Python

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python - What are the differences between lxml and ElementTree?

When it comes to generating XML data in Python, there are two libraries I often see recommended: lxml and ... ElementTree libraries for 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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141 views

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python - Asynchronous context manager

I have an asynchronous API which I'm using to connect and send mail to an SMTP server which has some setup ... the old style context 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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218 views

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python - Possible to return two lists from a list comprehension?

Is it possible to return two lists from a list comprehension? Well, this obviously doesn't work, but ... i*12 respectively. Many 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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340 views

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python - How to rearrange array based upon index array

I'm looking for a one line solution that would help me do the following. Suppose I have array = np.array([ ... numpy have a function 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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python - Forward declaration of classes?

I have some classes looking like this: class Base: subs = [Sub3,Sub1] # Note that this is NOT a list ... . Edit: Added information about 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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181 views

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python - ImportError: No module named request

I am trying to install python SpeechRecognition on my machine.When i am trying to install the package as pip ... am doing.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 - Get character position in alphabet

I'm 90% sure there is a built in function that does this. I need to find the position of a character in an ... way of doing it, any tips? See Question&Answers more detail:os...

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

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289 views

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python - Copying a column from one DataFrame to another gives NaN values?

This question has been asked so many times, and it seemed to work for others, however, I am getting NaN ... . Any help would be 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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521 views

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python - Why is datetime.strptime not working in this simple example?

I'm using strptime to convert a date string into a datetime. According to the linked page, formatting like this ... What am I doing 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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python - How to use argparse subparsers correctly?

I've been searching through a lot of the subparser examples on here and in general but can't seem to ... argument.type print argument.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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612 views

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python - Pandas column bind (cbind) two data frames

I've got a dataframe df_a with id information: unique_id lacet_number 15 5570613 TLA-0138365 24 5025490 EMP-0138757 ... way to achieve 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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538 views

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python - How to get NaN when I divide by zero

When I do floating point division in Python, if I divide by zero, I get an exception: >>> 1.0/0.0 Traceback ... my program). How can I 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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371 views

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python - Django not sending emails to admins

According to the documentation, if DEBUG is set to False and something is provided under the ADMINS setting, Django ... Django to not 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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227 views

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python - number of values in a list greater than a certain number

I have a list of numbers and I want to get the number of times a number appears in a list that meets ... there an even more condensed 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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288 views

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python - So what exactly does “from __future__ import barry_as_FLUFL” do?

I understand it's an inside joke that's meant to stay (just like “from __future__ import braces”), but what exactly does it 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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384 views

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python - Converting Snake Case to Lower Camel Case (lowerCamelCase)

What would be a good way to convert from snake case (my_string) to lower camel case (myString) in Python 2.7 ... this (with some case modifier?) See Question&Answers more detail:os...

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

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249 views

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python - How to print Y axis label horizontally in a matplotlib / pylab chart?

I'm creating very simple charts with matplotlib / pylab Python module. The letter "y" that labels the Y axis ... I print the "y" horizontally? See Question&Answers more detail:os...

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

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458 views

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python - Modulus % in Django template

I'm looking for a way to use something like the modulus operator in django. What I am trying to do is to add ... there any other 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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143 views

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python - Cross platform keylogger

I'm looking for ways to watch mouse and keyboard events on Windows, Linux and Mac from Python. My application is a ... to do that on a Mac? 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 - How to Merge Numerical and Embedding Sequential Models to treat categories in RNN

I would like to build a one layer LSTM model with embeddings for my categorical features. I currently have ... be an easier/smarter way. See Question&Answers more detail:os...

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

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137 views

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python - Pandas: parse merged header columns from Excel

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

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227 views

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python - Replace multiple substrings in a Pandas series with a value

All, To replace one string in one particular column I have done this and it worked fine: dataUS['sec_type'].str.strip( ... ", "HELLO"], "CORP") See Question&Answers more detail:os...

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

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321 views

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python - How to generate equispaced interpolating values

I have a list of (x,y) values that are not uniformly spaced. Here is the archive used in this question. ... this issue be worked around somehow? See Question&Answers more detail:os...

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

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279 views

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python - parallel file parsing, multiple CPU cores

I asked a related but very general question earlier (see especially this response). This question is very specific. ... to the total time. See Question&Answers more detail:os...

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

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432 views

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python - Choosing and deploying a comet server

I want to push data to the browser over HTTP without killing my django/python application. I decided to use a ... would be great. Thank you. See Question&Answers more detail:os...

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

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408 views

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python - Airflow Generate Dynamic Tasks in Single DAG , Task N+1 is Dependent on TaskN

When generating tasks dynamically, I need to have Task 2 be dependent of Task 1, Task1 >> Task 2 or task2. ... ???.set_upstream(??????) See Question&Answers more detail:os...

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

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314 views

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python - How to debug: Internal Error current transaction is aborted, commands ignored until end of transaction block

Hi Stackoverflow people, I do my first steps with GeoDjango and I am looking for better options to check ... for your help and 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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238 views

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python - Is pd.get_dummies one-hot encoding?

Given the difference between one-hot encoding and dummy coding, is the pandas.get_dummies method one-hot encoding ... clf.fit(X_train, y_train) See Question&Answers more detail:os...

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

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