Looking at Jupyter Notebook use give me the hint for the solution.
from gql.transport.requests import RequestsHTTPTransport
_transport = RequestsHTTPTransport(
url="https://countries.trevorblades.com/";,
use_json=True,
)
Issue solved :)
Richard
On Wednesday, July 29, 2020 at 3:57:33 PM UTC+2, Richard D wrote:
>
> Dear Web2py friends,
>
> I am trying to cosume a graphql endpoint using
> https://github.com/graphql-python/gql#HTTP-async-transport but get an
> error.
>
> Applied code:
>
> def qlquery():
> from gql import gql, Client, AIOHTTPTransport
>
> # Select your transport with a defined url endpoint
> transport = AIOHTTPTransport(url="https://countries.trevorblades.com/";
> )
>
> # Create a GraphQL client using the defined transport
> client = Client(transport=transport, fetch_schema_from_transport=True)
>
> # Provide a GraphQL query
> query = gql(
> """
> query getContinents {
> continents {
> code
> name
> }
> }
> """
> )
>
> # Execute the query on the transport
> result = client.execute(query)
> print(result)
>
> return locals()
>
>
> Gives:
>
> class 'RuntimeError'> There is no current event loop in thread 'Thread-13'.
> Versie
> web2py™ Version 2.20.4-stable+timestamp.2020.05.03.05.18.50
> Python Python 3.8.2: C:\Program Files\Python38\python.exe (prefix:
> C:\Program Files\Python38) Traceback
>
> 1.
> 2.
> 3.
> 4.
> 5.
> 6.
> 7.
> 8.
> 9.
> 10.
> 11.
> 12.
> 13.
> 14.
>
> Traceback (most recent call last):
> File "E:\web2py_src\web2py\gluon\restricted.py", line 219, in restricted
> exec(ccode, environment)
> File "E:/web2py_src/web2py/applications/insp/controllers/qlquery.py"
> <http://127.0.0.1:8000/admin/default/edit/insp/controllers/qlquery.py>, line
> 27, in <module>
> File "E:\web2py_src\web2py\gluon\globals.py", line 430, in <lambda>
> self._caller = lambda f: f()
> File "E:/web2py_src/web2py/applications/insp/controllers/qlquery.py"
> <http://127.0.0.1:8000/admin/default/edit/insp/controllers/qlquery.py>, line
> 23, in qlquery
> result = client.execute(query)
> File
> "C:\Users\richa\AppData\Roaming\Python\Python38\site-packages\gql\client.py",
> line 113, in execute
> loop = asyncio.get_event_loop()
> File "C:\Program Files\Python38\lib\asyncio\events.py", line 639, in
> get_event_loop
> raise RuntimeError('There is no current event loop in thread %r.'
> RuntimeError: There is no current event loop in thread 'Thread-13'.
>
>
> This looks like a asyncio issue as mentioned in
> https://github.com/graphql-python/gql#HTTP-async-transport
> Here they suggest to use :
>
> from gql import gql, AIOHTTPTransport, Clientimport asyncio
> async def main():
>
> transport =
> AIOHTTPTransport(url='https://countries.trevorblades.com/graphql')
>
> # Using `async with` on the client will start a connection on the
> transport
> # and provide a `session` variable to execute queries on this connection
> async with Client(
> transport=transport,
> fetch_schema_from_transport=True,
> ) as session:
>
> # Execute single query
> query = gql(''' query getContinents {
> continents { code name }
> } ''')
>
> result = await session.execute(query)
> print(result)
> asyncio.run(main())
>
> But this 'hangs'
>
> Does anybody has some experience with this?
>
> Kind regards,
> Richard
>
>
>
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