pip 错误Requested **, but installing version **

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pip 错误Requested , but installing version

使用pip升级时,虽然指定了版本,也使用了--upgrade参数,但pip就是不升级,Requested **, but installing version **,手动删了源文件也不行.后来发现一个细节就是pip安装的非常快,这速度像是没有请求网络,那就是本地有缓存了,进入/tmp目录,发现目录pip-build-root,就是它了,删除这个目录,执行pip install,Ok.…

记一次antlr错误：ANTLR Tool version 4.5.3 used for code generation does not match the current runtime version 4.7.2ANTLR

场景:重构spark 2.1版本的sql语法.因此需要使用antlr: 前期准备:idea安装了antlr插件(antlr的4.7.2版本) 因此在maven工程中添加了antlr的依赖: <dependency> <groupId>org.antlr</groupId> <artifactId>antlr4-runtime</artifactId> <version>4.7.2</version> </depen…

解决在 WINDOWS 下同时安装 python2 python3 后 pip 错误

再之前同时安装 python 后只需把环境变量PATH 里面改为 PATH=C:\Python36-32\Scripts\;C:\Python36-32\;C:\Python27\;C:\Python27\Scripts 然后把python3安装后的文件按照如下修改: C:\Python36-32\Scripts\pip.exe 改为 C:\Python36-32\Scripts\pip3.exe C:\Python36-32\python.exe 改为 C:\Python36-32\pyth…

错误问题：OpenGL version to old,GLViewinitWithRect(const stdbasic_stringchar,stdchar_traitschar,stdalloca

1电脑装成Linux之后,在Linux里面装虚拟机运行cocos2d-x-3.2时报如下错误: plan3d.exe!cocos2d::GLView::initWithRect(const std::basic_string<char,std::char_traits<char>,std::allocator<char> > & viewName, cocos2d::Rect rect, float frameZoomFactor) 行 346 C++…

pip错误-failed to create process/fatal error in launcher

电脑同时装了python2和python3,并且都配置了环境变量将python2的python.exe改成python2.exe,python3的python.exe没有改(主要用python2时则可改python3的exe) 命令行里输入python,python2会进入对应的python版本但输入pip2会报错: failed to create process 可改成 python2 -m pip 就ok了,后面就可以接pip的各种命令用pip2安装包时: python2 -m p…

maven-javadoc-plugin 出现错误Unsupported major.minor version 51.0

[INFO] --- maven-javadoc-plugin:3.0.0:jar (attach-javadocs) @ eii-frame-sms ---[WARNING] Error injecting: org.apache.maven.plugins.javadoc.JavadocJarjava.lang.TypeNotPresentException: Type org.apache.maven.plugins.javadoc.JavadocJar not present at or…