Error: Could not locate a Flask application. You did not provide the “FLASK_APP“ environment variabl
学习flask时的一些小问题汇总。报错详情flask环境下生成临时web可视网址时报错: Error: Could not locate a Flask application. You did not provide the “FLASK_APP” environment variable, an...
xmanager远程桌面centos7(xstart启动centos7.4) CentOS7中的GNOME启用了本地硬件加速功能,所以通过XDMCP协议远程连接CentOS时会有问题。这个在Xmanager官网博客中已提及,并建议使用其他的display manager(如lightdm等)和desktop environment(xfce或者 kde)来规避该问题。
安装包yum groupinstall "X Window System" -y#yum installgroup "GNOME Desktop" -yyum -y install xclock在shell端设置连接环境变量export DISPLAY=192.168.25.18:0.0...
[R]To delete a dataset from the environment
How can I delete a dataset from the environment if it is not used anymore in Rstudio? n RStudio, you can remove a dataset from the environment using ...
Android Environment 判断sd卡是否挂载 获取sd卡目录
在将一个文件存储到sd卡上面的时候,一般需要判断sd是否已经挂载才进行操作。那么如何判断sd卡已经挂载呢?我们可以使用Android的Environment类,具体使用如下: if(Environment.MEDIA_MOUNTED.equals(Environment.getExte...
pycharm 远程运行报错 Failed to prepare environment
什么也没动的情况下,远程连接后运行是没问题的,突然在运行时就运行不了了,解决方案 清理缓存: 有时候 PyCharm 的内部缓存可能出现问题,可以尝试清除缓存(File > Invalidate Caches / Restart),然后重新配置远程环境。 全部勾上,我是全部勾上重启后就...
.net强制退出主窗口的方法——Application.Exit()方法和Environment.Exit(0)方法(转)
.net类库已经帮助我们实现了窗口的关闭,如果此窗口是系统的主窗口,关闭此窗口即应该退出了整个应用程序。但事实上有时候并不是这样的,关闭窗口,只是停止了当前窗口的消...
linux系统安装jdkjava version "1.8.0_171" Java(TM) SE Runtime Environment (build 1.8.0_171-b11) Java HotSpot(TM) Client VM (build 25.171-b11, mixed mode)
一、从官网上下载linux对应版本的jdk,下载好的文件为jdk-8u171-linux-i586.tar.gz二、使用ftp工具上传jdk到linux的/usr/local文件目录下三、解压jdk文件tar -zxvf jdk-8u171-linux-i586.tar.gz四、设置环境变量vim ...
PICE(1):Programming In Clustered Environment - 集群环境内编程模式
首先声明:标题上的所谓编程模式是我个人考虑在集群环境下跨节点(jvm)的流程控制编程模式,纯粹按实际需要构想,没什么理论支持。在5月份的深圳scala meetup上我分享了有关集群环境下的编程模式思路。我提供了下面这个示意图: 上图是我正在探讨的“现代企业I.T综合数据平台”网络结构。因为互...
PL/SQL连接错误:ora-12705:cannot access NLS data files or invalid environment specified
适合自己的解决方法:排查问题:1. 你没有安装Oracle Client软件。这是使用PL/SQL Developer的必须条件。安装Oracle Client后再重试。2. 你安装了多个Oracle Client软件。在这种情况下,PL/SQL Developer可能会选择一个不正确的Oracle...
mac android studio 出现 Error: SDK location not found. Define location with sdk.dir in the local.properties file or with an ANDROID_HOME environment variable.
Error: SDK location not found. Define location with sdk.dir in the local.properties file or with an ANDROID_HOME environment variable.这个问题是说android s...
How to enable C development in a Windows 10 development environment VM
To enable C development in a Windows 10 development environment VM, follow these steps:Start VS in the Windows 10 development environment VM.Choose "F...
sudo su 提示没有配置JDK environment
sudo su 提示没有配置JDK environment最近工作遇到一问题,我通过SecureCRT远程登录服务器,部署web应用。将变更文件替换后,我需要切换到root用户,重启Tomcat。所做操作,(1) sudo su(2) sh /usr/local/tomcat/apache-tom...
How to set up a basic working Appium test environment
Appium is a test framework targeting devices; although it is very handy and powerful, it is not so straightforward and easy to install. Furthermore, t...
PatentTips – RDMA data transfer in a virtual environment
BACKGROUNDEmbodiments of this invention relate to RDMA (remote direct memory access) data transfer in a virtual environment.Traditional RDMA allows da...
Bash Specially-crafted Environment Variables Code Injection Vulnerability Analysis
http://www.cnblogs.com/LittleHann/p/3992778.html
[Flux] 1. Development Environment Setup
Install packages:{ "name": "reactflux", "version": "1.0.0", "description": "", "main": "dist/js/main.js", "scripts": { "test": "echo \"Error: ...
django.core.exceptions.ImproperlyConfigured: Requested setting DEFAULT_INDEX_TABLESPACE, but settings are not configured. You must either define the environment variable DJANGO_SETTINGS_MODULE or call
Error info:django.core.exceptions.ImproperlyConfigured: Requested setting DEFAULT_INDEX_TABLESPACE, but settings are not configured. You must either d...
Programming in Go (Golang) – Setting up a Mac OS X Development Environment
http://www.distilnetworks.com/setup-go-golang-ide-for-mac-os-x/#.V1Byrf50yM8Programming in Go (Golang) – Setting up a Mac OS X Development Environment...
composer update/require slow when enable XDebug in CLI environment
Recently I find there will be some issue to use composer command, which seems too slow to finish.After my investigation, I find that this problem is o...
Android开发学习---如何写数据到外部存储设备(sd卡),Environment.getExternalStorageDirectory,怎么获取sd卡的大小?
本文主要介绍如何写数据到sd卡,这里主要到的技术是Environment中的方法.1.2.实现代码:/datasave/src/com/amos/datasave/savePasswordService.java //写数据到sdcard public void savePassword...