# REPL

[![badge](https://img.shields.io/endpoint.svg?url=https%3A%2F%2Fgezf7g7pd5.execute-api.ap-northeast-1.amazonaws.com%2Fdefault%2Fsource_up_to_date%3Fowner%3Derg-lang%26repos%3Derg%26ref%3Dmain%26path%3Ddoc/EN/tools/repl.md%26commit_hash%3Dd15cbbf7b33df0f78a575cff9679d84c36ea3ab1)](https://gezf7g7pd5.execute-api.ap-northeast-1.amazonaws.com/default/source_up_to_date?owner=erg-lang&repos=erg&ref=main&path=doc/EN/tools/repl.md&commit_hash=d15cbbf7b33df0f78a575cff9679d84c36ea3ab1)

运行不带参数的 `erg` 命令会调用 REPL。它也可以用 `repl` 子命令调用
此外，您可以指定以下标志:

* show-type: 显示对象及其类型

```console
$ erg repl --show-type
Erg interpreter ... (tags/?:, ...) on ...
>>> 1
1: {1}
>>> id x = x
id = <function id>: |T: Type| T -> T
```