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Declaring variables inside a function python

For some reason I keep getting error in my code stating that my variables have not been declared. This only happens ... ' is not defined need help to understand what's happening....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ssh - How do I scp from a second remote host, that requires a key, to the local machine?

I regularly transfer files from a second remote host to my local machine. It would be nice to do this in one go! ... the first host, but nothing more. Please could anyone help?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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numpy - Fast Fourier Transform performance in Python

So I wrote a short Python program to estimate the accuracy of the Python's FFT method. import numpy as np import matplotlib.pyplot as plt ... constant N is (2/(np.pi*a**2))**(1/4)...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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299 views

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javascript - Passing a JSON object from the background script to the content script in a chrome extension

I have a JS array in the "background.js" file of my Chrome extension. I converted the JS object to a JSON ... now wish to pass on the jsonObjectTitles to the content.js file...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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512 views

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matlab - I want to make a contour/surface plot, which shows the values in the cells, similar to an EFI tuning map

I want to make something like this in MATLAB. This is a map which has x and y axis and a value for the z ... map which prints values in the matrix on the screen Sample graph:...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python 3.x - Directory to Variable

I have this directory structure, and would only like to take the 7rd level as a variable D:homeuserarcmusicMP3AA_Day_To_RememberAlbum1 ... how can I narrow it down to the artist?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How did std::allocators allow to support near/far pointers?

Several sources ([1],[2]) mention that the purpose of std::allocator was to allow for different pointer types ( ... Josuttis, The C++ Standard Library: A Tutorial and Reference...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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405 views

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android - MODE_IN_COMMUNICATION or MODE_IN_CALL

When binding to a bluetooth headset using startBluetoothSco how do we decide if we set the audio ... connectivity: MODE_IN_CALL vs MODE_IN_COMMUNICATION Thanks in advance....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Cannot run django-admin commands because files are located in anaconda3 folder?

So I thought I installed anaconda and Django correctly but I guess I didn't because my django-admin commands don't work. As ... I'm sorry if this is a simple question. Thank you!...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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rest - python code to trigger control-m job using control-m api

I have a job deployed in control-m. I am developing a python code to trigger that job through control-m api. Which ... have the job names with me. Any example will be much helpful...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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267 views

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java - Open Redirect violation when using response.sendRedirect()

I'm getting Open Redirect voilation in Fortify & Sonarqube for below lines of code. response.sendRedirect(redirectUri); The ... . Please suggest, if I'm missing anything. Thanks....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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700 views

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streaming to youtube with ffmpeg

I am trying to stream to youtube but the stream health says no data. ffmpeg -threads:v 2 -threads:a 8 -filter_threads 2 ... data is being sent over. What is causing this to fail?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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558 views

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haskell - Chaining unary operators with megaparsec

I have written a parser using megaparsec for a very simple language consisting of integer literals and two unary operators "a" and " ... I'm met with "unexpected 'b'". Why is that?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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246 views

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asp.net core api - how to distinguish between `api/cars` and `api/cars?color=red` calls with [FromQuery] object

I am using [FromQuery] atribute in controller's Get method: //CarsController, etc.. [HttpGet] public async Task< ... color=red, but i am looking for more subtle solution....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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push notification - React Firebase success message but no message

After searching long and hard and trying different things: Im unable to get a firebase message (sending through ... ) __proto__: Object Any help would be greatly appreciated!...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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450 views

1 answer

dependency injection - Blazor-server scoped services, closed connections, garbage collection

If I have a scoped service: services.AddSingleton<MyScopedService>(); And in that service, an HTTP request is made: ... Or maybe I'm doing something wrong with my scoped services....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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347 views

1 answer

React里面的这个bind(this)是什么意思？

求详解。。...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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345 views

1 answer

architecture - How to find out how wide adress bus width is?

Basicly, I couldn't find anywhere where this is explained thoroughly, so I though maybe anybody would have a explanation ... is not correct, I would love to hear the explanation....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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251 views

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api - the method was called on null in flutter

greeting to all, I am stuck in a situation where I am getting data from the back end but initially it the error is ... objects and those objects might use it more than one time in...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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123 views

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nginx服务器URL无法自动添加index.php

请教个nginx问题，添加try_files $uri $uri/index.php /index.php?$query_string;，类似www.mydomain.com/admin这样的URL可以解析，但是单纯访问www.mydomain.com却提示403错 ... index.php这样手动添加index.php后可以正常解析，有遇到类似问题的吗？...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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239 views

1 answer

css - How do you put <a> tags here on my html code so that it doesn't affect it's background-color and color or text?

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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292 views

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javascript - Writing to object from parent component in VueJS

I'd like to have a list which maps the modified values back to the description in the container. In other way, I want ... the item back to the object in the list in the container?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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465 views

1 answer

看别人的项目中有一个parseInt($(window).height(), 20)? 基础还有20的吗？

如题目所述。parseInt()的基数有2,8,10,16， 20是什么鬼...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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543 views

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python - Training Keras+Tensorflow model with Google Colaboratory TPU

Goal I would like to train EfficientNet model with Google Colab TPU. However, below error is occured. ... (value, from_value) InvalidArgumentError: Unable to parse tensor proto...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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229 views

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javascript模仿重载

今天看了下javascript高级编程这本书，书中提到可以使用传如不同的参数数量和类型实现java的方法重载，但我试了好像不行，都会被后面的function给覆盖 function a(num1,num2){ alert("djang" ... == 1){ alert("diang2"); } } a("aaa","bb"); a("aaa");...

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

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547 views

1 answer

web 端微博第三方登录，授权回掉页面如何获取code？

微博第三方登陆接口： https://api.weibo.com/oauth2/authorize 其中一个参数： redirect_uri = 授权回调页面设置的是授权回调页： https://api.weibo.com/oauth2/ ... 回调页面，那个页面url上面带了一个code，但是open的小窗口无法控制啊如何获取到code...

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

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492 views

1 answer

n个随机数和是固定的 js如何实现？

例如：5个随机数和为10...

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

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519 views

1 answer

利用phpqrcode生成二维码页面的title怎么设置

我利用phpqrcode在页面生成了一个二维码，但是页面上面的title显示的是“index.php (462×462)”，这个类文件是在那个地方设置的呀，我直接在后面写的html代码，自己定义的title也不好使，求教解决...

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

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