Error when using stand alone file with state class

[ustas4]

Describe the bug
using separated file contains class State impossible

To Reproduce
Steps to reproduce the behavior:

1. Create separated file my_state.py contains class State declaration
2. _`import mesop as me

@me.stateclass
class State:
is_dialog_open: bool = False`_

3. use separated class in your main.py

4. _`import mesop as me

5. from my_state import State
   ...
   @me.page(
   on_load=load,
   security_policy=me.SecurityPolicy(
   allowed_iframe_parents=["https://google.github.io"]
   ),
   path="/badge",
   )
   def app():
   s = me.state(State)
   ..._
   5.Start application asmesop main.py`

6. See error

7. **Mesop Developer Error: Tried to get the state instance for State, but it's not a state class.

Did you forget to decorate your state class State with @stateclass?**
A clear and concise description of what you expected to happen.

Screenshots

Desktop System Info

• OS: windows11
• Browser chrome
• Version 131.0.6778.140 (Official Build) (64-bit)

Additional context
Add any other context about the problem here.

[richard-to]

That's interesting. I'll try to repro your example. But I've done this before with no problem (although I'm using MacOS with Chrome, so could be a Windows specific thing but seems odd).

But your code looks fine to me at a glance.

Here's an example of separated state that does work for me (but granted haven't worked on this project in a while):

• https://github.com/richard-to/mesop-prompt-tuner/blob/main/main.py
• https://github.com/richard-to/mesop-prompt-tuner/blob/main/state.py

[ustas4]

Hi, tomorrow I'll send you version of mesop do it fine on windows from my work pcנשלח מה-Galaxy שלי -------- הודעה מקורית --------מאת: Richard To ***@***.***> תאריך: 14.12.2024 18:05 (GMT+02:00) אל: google/mesop ***@***.***> עותק: ustas4 ***@***.***>, Author ***@***.***> נושא: Re: [google/mesop] Error when using stand alone file with state class (Issue #1147) That's interesting. I'll try to repro your example. But I've done this before with no problem (although I'm using MacOS with Chrome, so could be a Windows specific thing but seems odd). But your code looks fine to me at a glance. Here's an example of separated state that does work for me (but granted haven't worked on this project in a while): https://github.com/richard-to/mesop-prompt-tuner/blob/main/main.py https://github.com/richard-to/mesop-prompt-tuner/blob/main/state.py —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you authored the thread.Message ID: ***@***.***>

[ustas4]

OK, my work chrome version is90.0.4330.72(Official Build) (64-bit) Windows 10 Enterprise 2016 LTSBMesop 0.12.8 Python 3.13Separate file state.py work fineנשלח מה-Galaxy שלי -------- הודעה מקורית --------מאת: Richard To ***@***.***> תאריך: 14.12.2024 18:05 (GMT+02:00) אל: google/mesop ***@***.***> עותק: ustas4 ***@***.***>, Author ***@***.***> נושא: Re: [google/mesop] Error when using stand alone file with state class (Issue #1147) That's interesting. I'll try to repro your example. But I've done this before with no problem (although I'm using MacOS with Chrome, so could be a Windows specific thing but seems odd). But your code looks fine to me at a glance. Here's an example of separated state that does work for me (but granted haven't worked on this project in a while): https://github.com/richard-to/mesop-prompt-tuner/blob/main/main.py https://github.com/richard-to/mesop-prompt-tuner/blob/main/state.py —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you authored the thread.Message ID: ***@***.***>

[richard-to]

Hmm, yeah. That's pretty strange. Not sure what could be causing the difference in behavior.