Support running modules

[paulrobello]

Nearly all my projects are laid out as a module ie. python -m 'module_name'
It would be awesome if I could use fastmcp dev -m 'module_name'

[iljabauer]

For the run command which uses uv it can be build my allowing the -m flag:

astral-sh/uv#7754

Should I create a PR? Do we need support for the non uv style run_command?

[jlowin]

I actually think this would be quite useful -- today, both fastmcp run and fastmcp dev (which generates a fastmcp run command under the hood) parse the file you provide, import the MCP server, and call its run() method. This is why we can change transports and stuff on the fly. However, this ignores any if __name__ == "__main__" blocks and any specific configuration therein. There is a persistent request to respect those blocks (and the typical response is to just use python <file> instead of fastmcp run <file>. So I think passing a -m flag into fastmcp run could be quite effective but may require a little more work than just passing the flag to uv because I do think we will want to avoid our "import server object" logic, if that makes sense.

[PakitoSec]

Hi. Do you have any alternative for launching module project via fastmcp cli ? Would be great