我想要一个具有多个值的查询 where id in (3,4,5)
然后我有一个my_list = [3,4,5]
如此,我如何将该列表作为参数传递给sqlalchemy过滤?
query = Notification.query.filter_by(id=my_list).all()
Run Code Online (Sandbox Code Playgroud) 关于以下SO答案。为了理解使用 Contextvars 和不使用 Contextvars 之间的区别,我做了一些更改。
我希望在某个时候变量myid
会被破坏,但将范围更改为更高的数字似乎根本没有影响。
import asyncio
import contextvars
# declare context var
request_id = contextvars.ContextVar('Id of request.')
async def some_inner_coroutine(myid):
# get value
print('Processed inner coroutine of myid : {}'.format(myid))
print('Processed inner coroutine of request: {}'.format(request_id.get()))
if myid != request_id.get():
print("ERROR")
async def some_outer_coroutine(req_id):
# set value
request_id.set(req_id)
await some_inner_coroutine(req_id)
# get value
print('Processed outer coroutine of request: {}'.format(request_id.get()))
async def main():
tasks = []
for req_id in range(1, 1250):
tasks.append(asyncio.create_task(some_outer_coroutine(req_id)))
await asyncio.gather(*tasks)
if …
Run Code Online (Sandbox Code Playgroud) 我有以下代码,但收到消息错误:
“wrappedValue”不可用:@Published 仅适用于类的属性
//*
/**
Chat
Created on 29/07/2020
*/
import SwiftUI
let lightGreyColor = Color(red: 239.0/255.0, green: 243.0/255.0, blue: 244.0/255.0, opacity: 1.0)
struct ConnectionView: View {
@ObservedObject var keyboardResponder = KeyboardResponder()
@ObservedObject var viewModel = ConnectionVM()
// @State var uuid1: String = ""
// @State var uuid2: String = ""
@State var authenticationDidFail: Bool = false
var body: some View {
return VStack {
WelcomeText()
LogoImage()
UUIDTextField(uuid: viewModel.uuid1)
UUIDTextField(uuid: viewModel.uuid2)
if authenticationDidFail {
Text("Information not correct. Try again.")
.offset(y: …
Run Code Online (Sandbox Code Playgroud) 我是在 Firebase 中使用 typescript 的新手,我在导入类时遇到了一些问题。
为了有一个面向对象的开发我正在读的firebase-admin/index.d.ts
文件,我认为将是有益的以下几种类型:TokenMessage
,TopicMessage
,ConditionMessage
,等...
我的问题是我不知道如何导入这些类型,然后从它们创建对象。
import {Bucket} from '@google-cloud/storage';
import * as _firestore from '@google-cloud/firestore';
import {Agent} from 'http';
declare namespace admin {
interface FirebaseError {
code: string;
message: string;
stack: string;
toJSON(): Object;
}
type FirebaseArrayIndexError = {
index: number;
error: FirebaseError;
}
interface ServiceAccount {
projectId?: string;
clientEmail?: string;
privateKey?: string;
}
interface GoogleOAuthAccessToken {
access_token: string;
expires_in: number;
}
interface AppOptions {
credential?: admin.credential.Credential;
databaseAuthVariableOverride?: Object; …
Run Code Online (Sandbox Code Playgroud) firebase typescript google-cloud-functions firebase-cloud-messaging
我想访问我的私人 pod 包,但总是返回 nil。
Bundle(identifier: "org.cocoapods.MyPrivatePod")//only this return nil
Bundle(identifier: "org.cocoapods.Alamofire")
Bundle(identifier: "org.cocoapods.SQLCipher")
Run Code Online (Sandbox Code Playgroud)
我的podspec
Pod::Spec.new do |s|
s.name = 'MyPrivatePod'
s.version = '1.4.0'
s.summary = 'MyPrivatePod Component'
s.description = "MyPrivatePod."
s.homepage = 'https://github.com/myprivatecompany/myprivtepodrepo.git'
s.license = ""
s.authors = { 'me me' => 'me@me.com' }
s.swift_version = '4.2'
s.source = { :git => "git@github.com:myprivatecompany/myprivtepodrepo.git", :tag => "#{s.version}" }
s.ios.deployment_target = '9.0'
s.source_files = 'MyPrivatePod/**/*.{h,m,swift}'
s.resource_bundles = {
"MyPrivatePod" => ['MyPrivatePod/**/*.{xcassets,ttf,strings,json,xib,gif,storyboard}']
}
#s.resources = 'MyPrivatePod/**/*.{xcassets,ttf,strings,json,xib,storyboard}'
s.static_framework = true
s.dependency 'AnotherPrivatePod', '2.3.0'
end
Run Code Online (Sandbox Code Playgroud) 我有一个奇怪的行为,因为我可以拉但我不能推。
我有一个 ssh 密钥,每次我尝试拉或推它时都会要求我输入密码。
$ ssh -T git@github.com
Enter passphrase for key '/c/Users/b.rcb/.ssh/id_rsa':
Hi ricardochampa! You've successfully authenticated, but GitHub does not provide
shell access.
$ git pull
Enter passphrase for key '/c/Users/b.rcb/.ssh/id_rsa':
Already up-to-date.
$ git push
warning: push.default is unset; its implicit value is changing in
Git 2.0 from 'matching' to 'simple'. To squelch this message
and maintain the current behavior after the default changes, use:
git config --global push.default matching
To squelch this message and adopt the …
Run Code Online (Sandbox Code Playgroud) AFAIK 合并执行,insert or update
所以我正在做的事情非常简单。集线器和标签之间存在 1 到 N 的关系。因此,当我尝试在标签和集线器上进行合并时,集线器运行良好并从数据库加载现有集线器并进行更新,但在db.session.merge(nuevo_tag)
执行时失败并抛出异常,因为在幕后尝试进行插入,即使标签以前存在。我做错了什么?
nuevo_hub = Hub(guid_hub,name,location,comments,id_project,creado_en,actualizado_en)
merged_hub = db.session.merge(nuevo_hub)
#db.session.commit() # If I use this line tags perform an insert.
nuevo_tag = Tag(guid_tag,project,merged_hub,TYPE_HUB,creado_en,actualizado_en)
merged_tag = db.session.merge(nuevo_tag)
db.session.commit()
Run Code Online (Sandbox Code Playgroud)
如果我删除db.session.commit()
则会显示其他错误:
sqlalchemy.orm.exc.FlushError:具有身份密钥的新实例 (, (b'\x11\x0e\x84\x00\xe2\x9b\x11\xd4\xa7\x16DfUD\x00\r',)) 与持久实例冲突
class Item(db.Model):
__tablename__ = "items"
# id_item = db.Column(db.Integer, autoincrement=True, primary_key=True)
guid_item = db.Column(db.BINARY(16), primary_key=True)
id_project = db.Column(db.Integer,db.ForeignKey("projects.id_project"))
type = db.Column(db.Integer)
name = db.Column(db.String(50), nullable=False, index= True)
created_at = db.Column(db.DateTime)
updated_at = db.Column(db.DateTime)
__mapper_args__ = {
'polymorphic_identity': …
Run Code Online (Sandbox Code Playgroud) 我有 macOS,我想kotlin
从终端使用。然后我想找到它的kotlin
安装位置,因为我是从 Android Studio 使用它的。
我知道我可以Kotlin
使用安装homebrew
,但我想避免拥有两份Kotlin
.