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Description:

aiographqlclient 1.1.0

Asynchronous GraphQL Client

An asynchronous GraphQL client built on top of aiohttp and graphql-core-next. The client by default introspects schemas and validates all queries prior to dispatching to the server.
Documentation
For the most recent project documentation, you can visit https://aiographql-client.readthedocs.io/.
Installation
pip install aiographql-client
Example Usage
Here are some example usages of this client implementation. For more examples, and advanced scenarios,
see Usage Examples section in
the documentation.
Simple Query
async def get_logged_in_username(token: str) -> GraphQLResponse:
client = GraphQLClient(
endpoint="https://api.github.com/graphql",
headers={"Authorization": f"Bearer {token}"},
)
request = GraphQLRequest(
query="""
query {
viewer {
login
}
}
"""
)
return await client.query(request=request)

>>> import asyncio
>>> response = asyncio.run(get_logged_in_username("<TOKEN FROM GITHUB GRAPHQL API>"))
>>> response.data
{'viewer': {'login': 'username'}}

Query Subscription
async def print_city_updates(client: GraphQLClient, city: str) -> None:
request = GraphQLRequest(
query="""
subscription ($city:String!) {
city(where: {name: {_eq: $city}}) {
description
id
}
}
""",
variables={"city": city},
)
# subscribe to data and error events, and print them
await client.subscribe(
request=request, on_data=print, on_error=print, wait=True
)

For custom event specific callback registration, see Callback Registry Documentation.
Query Validation Failures
If your query is invalid, thanks to graphql-core-next, we get a detailed exception in the traceback.
aiographql.client.exceptions.GraphQLClientValidationException: Query validation failed

Cannot query field 'ids' on type 'chatbot'. Did you mean 'id'?

GraphQL request (4:13)
3: chatbot {
4: ids, bot_names
^
5: }

Cannot query field 'bot_names' on type 'chatbot'. Did you mean 'bot_name' or 'bot_language'?

GraphQL request (4:18)
3: chatbot {
4: ids, bot_names
^
5: }

Query Variables & Operations
Support for multi-operation requests and variables is available via the client. For example,
the following request contains multiple operations. The instance specifies default values to use.
request = GraphQLRequest(
query="""
query get_bot_created($id: Int) {
chatbot(where: {id: {_eq: $id}}) {
id, created
}
}
query get_bot_name($id: Int) {
chatbot(where: {id: {_eq: $id}}) {
id, bot_name
}
}
""",
variables={"id": 109},
operation="get_bot_name"
)

The default values can be overridden at the time of making the request if required.
await client.query(request=request, variables={"id": 20}, operation="get_bot_created")