SyntaxError: ‘＜‘ operator not allowed in environment markers

时间 2021-07-11

标签 linux 栏目 Linux 繁體版

原文原文链接

在使用pip安装软件时报如下错误：这里时因为pip 以及setuptools版本太旧导致，注意不能只更新setuptools会报如下错误，如下：要同时更新pip 以及setuptools： pip install --upgrade pip pip install --upgrade setuptools

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1. '' operator is not allowed for source level below 1.7
2. Eclipse '《》'operator is not allowed for source level below 1.7
3. SyntaxError: can't assign to operator
4. Error: Content is not allowed in prolog
5. Using IN operator on VOs
6. diamond operator is not supported in -source 1.5
7. java: diamond operator is not supported in -source 1.5
8. spread operator in es6
9. JavaScript Bitwise NOT Operator
10. maven 安装 Error: JAVA_HOME not found in your environment.

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