how to use value outside async function in python

Question

I have a python async function. I am taking data from postgreSql database using this code:

stores = await db.select_all_stores()

After retrieving data, I am going to use Shops value outside function. I need import this variable from another module.

async def get_all_stores():
global Shops
Shops = []

stores = await db.select_all_stores()
print(stores)
for store in stores:
    storeName = []
    storeDict = {'lat': '', 'lon': ''}
    storeDict['lat'] = float(store[6])
    storeDict['lon'] = float(store[7])
    storeName.append(store[1])
    storeName.append(storeDict)
    storeName = tuple(storeName)

    Shops.append(storeName)

return Shops

Answer 1

You could simply return shops list(as you did) or tuple and assign to the Shops variable before all your handlers. example:

async def get_all_stores():
    # global Shops
    # Shops = []
    shops_list = []
    stores = await db.select_all_stores()

    print(stores)
    for store in stores:
        storeName = []
        storeDict = {'lat': '', 'lon': ''}
        storeDict['lat'] = float(store[6])
        storeDict['lon'] = float(store[7])
        storeName.append(store[1])
        storeName.append(storeDict)
        storeName = tuple(storeName)

        shops.append(storeName)

    return shops_list



Shops = await get_all_stores()

@dp.message_handler()
async def example(message: types.Message):
    # do something with your Shops variable

if __name__ == '__main__':
    executor.start_polling(dp, skip_updates=True)