Recent questions tagged Python

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python - Getting indices of True values in a boolean list

I have a piece of my code where I'm supposed to create a switchboard. I want to return a list of all the ... == True] This only returns "4" See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Pycharm does not show plot

Pycharm does not show plot from the following code: import pandas as pd import numpy as np import matplotlib as plt ... 1600 64 bit (AMD64)]'} See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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300 views

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python - Change a Django form field to a hidden field

I have a Django form with a RegexField, which is very similar to a normal text input field. In my view, under ... <input type="hidden"> field? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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512 views

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python - Requests -- how to tell if you're getting a 404

I'm using the Requests library and accessing a website to gather data from it with the following code: r = ... HTML of a custom 404 page. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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359 views

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python - Plot Normal distribution with Matplotlib

please help me to plot the normal distribution of the folowing data: DATA: import numpy as np import matplotlib. ... is wrong with my code? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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121 views

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python - Support multiple API versions in flask

I started to design a RESTful webservice with Flask and Python and I'm wondering how one would support multiple ... to achieve this with Flask? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Are numpy arrays passed by reference?

I came across the fact that numpy arrays are passed by reference at multiple places, but then when I execute the ... and numpy version 1.6.1 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - django templates: include and extends

I would like to provide the same content inside 2 different base files. So I'm trying to do this: page1.html ... that it will solve my problem. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to reset db in Django? I get a command 'reset' not found error

Following this Django by Example tutotrial here: http://lightbird.net/dbe/todo_list.html The tutorial says: "This ... 'admin' is not defined See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Dynamically update ModelForm's Meta class

I am hoping to dynamically update a ModelForm's inline Meta class from my view. Although this code seems to update ... = Passenger exclude = [] See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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167 views

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python - Tensorflow: restoring a graph and model then running evaluation on a single image

I think it would be immensely helpful to the Tensorflow community if there was a well-documented solution to the crucial ... ': tf.app.run() See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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243 views

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python - TensorFlow - Importing data from a TensorBoard TFEvent file?

I've run several training sessions with different graphs in TensorFlow. The summaries I set up show interesting ... this? Thank you much. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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292 views

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python - built-in range or numpy.arange: which is more efficient?

When iterating over a large array with a range expression, should I use Python's built-in range function, or ... all the values in memory. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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226 views

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python - Get index of a row of a pandas dataframe as an integer

Assume an easy dataframe, for example A B 0 1 0.810743 1 2 0.595866 2 3 0.154888 3 4 0.472721 4 5 0. ... get TypeError: '[4]' is an invalid key See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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400 views

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python - How can I use UUIDs in SQLAlchemy?

Is there a way to define a column (primary key) as a UUID in SQLAlchemy if using PostgreSQL (Postgres)? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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778 views

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python - How to rotate x-axis tick labels in Pandas barplot

With the following code: import matplotlib matplotlib.style.use('ggplot') import matplotlib.pyplot as plt import ... df.index,rotation=90) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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134 views

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python - How to call a async function contained in a class?

Based on this answer I want to build an async websoket client in a class which would be imported from another file ... at the begining of def? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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227 views

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python - Foreign Key Django Model

I'm trying to create 3 models ; Person, Address and Anniversy. The plan is to have one address and one anniversy ... u'%s' % (self.anniversy) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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984 views

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python - Using multiprocessing.Process with a maximum number of simultaneous processes

I have the Python code: from multiprocessing import Process def f(name): print 'hello', name ... simultaneous multiprocessing.Processs running? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Error message "Linter pylint is not installed"

I want to run Python code in Microsoft Visual Studio Code but it gives an error: Linter pylint is not installed ... How can I install Pylint? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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165 views

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python - Django: how do you serve media / stylesheets and link to them within templates

Variations of this question have been asked, but I'm still unable to get my stylesheets to load correctly when my ... was confusing me I think. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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115 views

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python - flask-sqlalchemy or sqlalchemy

I am new in both flask and sqlalchemy, I just start working on a flask app, and I am using ... I would appreciate your clarifications. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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263 views

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python - How to find the importance of the features for a logistic regression model?

I have a binary prediction model trained by logistic regression algorithm. I want know which features(predictors) are ... make sort of sense? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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307 views

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python - Row and column headers in matplotlib's subplots

What's the best practise to add a row and a column header to a grid of subplots generated in a loop in ... Can you suggest a better alternative? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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125 views

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python - Pandas: how to change all the values of a column?

I have a data frame with a column called "Date" and want all the values from this column to have the same ... only the year to the DataFrames? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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323 views

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python - How to delete the last row of data of a pandas dataframe

I think this should be simple, but I tried a few ideas and none of them worked: last_row = len( ... still be misunderstanding something basic. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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165 views

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python - Pandas: slow date conversion

I'm reading a huge CSV with a date field in the format YYYYMMDD and I'm using the following lambda to ... . Any suggestion to improve it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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188 views

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python - Switching from SQLite to MySQL with Flask SQLAlchemy

I have a site that I've built with Flask SQLAlchemy and SQLite, and need to switch to MySQL. I have migrated the ... 1) what should that URI be? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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