a = [1, 2]m = ','.join(a)output:m:1, 2
标签:编程问答
Error: Can't find Python executable, you can set the PYTHON env variable.
该错误解决方案。 NodeJS安装Npm包时出现错误: npm WARN prefer global node-gyp@3.4.0 should be installed with -g > snappy@5.0.…
CentOS yum命令报错 Error: File /var/cache/yum/i386/6/epel/metalink.xml does not exist
最近在虚拟机上执行yum命令一直报错:Could not parse metalink https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=i3…
ANDROID NFC读M1卡
<?xml version="1.0" encoding="utf-8"?> <android.support.constraint.ConstraintLayout xmlns:andr…
mac安装adb
brew tap caskroom/versions brew cask install android-platform-tools 直接下载: https://dl.google.com/android/reposi…
Django exception middleware: TypeError: object() takes no parameters
升级jiango过程中,修改settings.py后完整报错信息如下: Unhandled exception in thread started by <function check_errors.<loc…
Push failed. Failed with error: fatal: Could not read from remote repository.
在往github 仓库提交的时候出现以下错误。 Failed with error: fatal: Could not read from remote repository. 此原因是因为ssh公钥有问题,因为之前电脑…
《Java编程思想》 -- 异常总结
概述 说起异常,我就想起了Bug,也就是常说的信春哥,无Bug,什么是Bug呢?我理解的Bug就是没有按照自己原先假想的逻辑去执行,这其中包括了两个方面,一方面是代码语法问题,一方面是逻辑问题,就比如正常逻辑买了东西要付…
使用 tymon jwt-auth 出现 "payload does not contain the required claims” 问题的解决方法
jwt-auth是一个laravel/lumen上的jwt库 在wiki中有根据任何自定义字段来创建一个token的方法,官方代码如下: //token生成 $customClaims = ['foo' => 'b…
Could not open JDBC Connection for transaction
异常详情: Could not open JDBC Connection for transaction; nested exception is org.apache.commons.dbcp.SQLNestedExc…
配置spring-boot-actuator时候遇到的一些小问题
前言 spring-boot-actuator是一个spring-boot提供的用于监控组件,只需要在代码中加入依赖就可以了 <dependency> <groupId>org.springfra…
E/AudioEffect: set(): AudioFlinger could not create effect, status: -1
E/AudioEffect: set(): AudioFlinger could not create effect, status: -1 E/libOpenSLES: Effect initCheck() retur…