Stuck on "Latest API meta-data loaded! You may begin."

[Siddharth Sharma]

The script gets stuck on the step when I try to initialize using DataGovIndia(API_KEY) on second step, "Latest API meta-data loaded! You may begin."

from datagovindia import DataGovIndia
import streamlit as st

@st.cache(suppress_st_warning=True)
def getDataGovAdaptor(): 
    return DataGovIndia(API_KEY)

datagovin = getDataGovAdaptor()
result = datagovin.search(description="Wheat",max_results=1,print_results=True)

[Aditya Chhabra]

@hearsid
I was able to reproduce this error. When you initializate the DataGovIndia class with your API_KEY, it downloads the latest meta-data (list of APIs, titles, description etc.) and stores it in memory. Since these are python objects, it is possible that the streamlit cache isn't able to store them.

However, I looked at their documentation, and I was able to make it work by adding an additional kwarg (allow_output_mutation=True) in the @st.cache decorator.

This is what I used -

import os
from datagovindia import DataGovIndia
import streamlit as st
API_KEY = os.environ['DATAGOVIN_API_KEY']
@st.cache(allow_output_mutation=True,suppress_st_warning=True)
def getDataGovAdaptor(): 
    return DataGovIndia(API_KEY)

datagovin = getDataGovAdaptor()
result = datagovin.search(description="Wheat",max_results=1,print_results=True)

Here's the output:

Hope this solves your issue!

[Siddharth Sharma]

@addypy Thank you for the quick reply, it is working for the first time and then giving this error,

I also think and agree that it may be because @st.cache is not able to store the DataGovIndia in memory, I'm also looking for other options to replicate st.cache functionality.

[Aditya Chhabra]

Not sure if this is useful, but if you can't find an alternative, you could try to wrap multiple arguments in the same function - initiate the class with your key, search for the results, and store the output you need.
All the best!