小编Jas*_*own的帖子

我最近升级到 Java11。有 150 个新的 Nashorn 弃用警告：

Utils.java:31: warning: [removal] NashornScriptEngineFactory in jdk.nashorn.api.scripting has been deprecated and marked for removal
            NashornScriptEngineFactory  factory = new NashornScriptEngineFactory();

是否可以隐藏这些弃用警告？

我试过的：

tasks.withType(JavaCompile) {
    options.compilerArgs += '-Xlint:-deprecation'
}

./gradlew build -Dnashorn.option.no.deprecation.warning=true

gradle-wrapper.properties: org.gradle.jvmargs= -Dnashorn.args=--no-deprecation-warning

也

NashornScriptEngineFactory  factory = new NashornScriptEngineFactory();
ENGINE = factory.getScriptEngine(new String[] {"--no-java --no-deprecation-warning"}, null, className -> false);

我相信JDK-8210140可能引用了类似的问题。

如何将一个系列分解为一个值？我试过pd.concat()。

  dict = {"Cities": ["Chicago", "Hong Kong", "London"], "People": ["John", "Mike", "Sue"]}
  df = pd.Dataframe.from_dict(dict)

        Cities People
  0    Chicago   John
  1  Hong Kong   Mike
  2     London    Sue

* 期望的输出： *

"John Mike Sue"