---
title: "Document how to provide a negative number as an argument · fas..."
description: "!https://github.com/fastapi/typer/discussions/798"
date: 2024-10-30
published: true
tags:
  - cli
  - python
  - thought
  - typer
template: link
---


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      <div class="embed-card-title">Document how to provide a negative number as an argument · fastapi typer · Discussion #798</div>
      <div class="embed-card-description">First Check I added a very descriptive title here. I used the GitHub search to find a similar question and didn&#39;t find it. I searched the Typer documentation, with the integrated search. I already ...</div>
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Today I learned that you cannot pass negative integers as values to typer.  in this case `context_settings={"ignore_unknown_options": True}` is required so that the `-` does not look like a flag.

``` python
# script name: main.py

import typer

app = typer.Typer()


@app.command()
def failing(value: float):
    print(f"{value=}")
    

@app.command(
    context_settings={"ignore_unknown_options": True}
)
def working_good(value: float):
    print(f"{value=}")
    
    
if __name__ == "__main__":
    app()
```