Python influxdb-client query API: FluxTable definition was not found

I’m having some issues when querying an instance of influxdb OSS 2.0.5, where the following query:

query = f'from(bucket: "{bucket}") \
  |> range(start: {from_date}, stop: {today.isoformat()}T23:00:00Z) \
  |> filter(fn: (r) => r._field == "prob") \
|> aggregateWindow( \
    every: 1h, \
    fn: count \
res = client.query_api().query_data_frame(query=query, org=org)

…which returns the following error:

FluxCsvParserException                    Traceback (most recent call last)
<ipython-input-63-5125eec60c07> in <module>
----> 1 res = client.query_api().query_data_frame(query=query, org=org)
      2 res

~/projects/tectal/notebooks/tectalenv/lib/python3.8/site-packages/influxdb_client/client/ in query_data_frame(self, query, org, data_frame_index, params)
    146         _generator = self.query_data_frame_stream(query, org=org, data_frame_index=data_frame_index, params=params)
--> 147         _dataFrames = list(_generator)
    149         if len(_dataFrames) == 0:

~/projects/tectal/notebooks/tectalenv/lib/python3.8/site-packages/influxdb_client/client/ in generator(self)
     69         """Return Python generator."""
     70         with self as parser:
---> 71             yield from parser._parse_flux_response()
     73     def _parse_flux_response(self):

~/projects/tectal/notebooks/tectalenv/lib/python3.8/site-packages/influxdb_client/client/ in _parse_flux_response(self)
    113                 table_id = -1
    114             elif table is None:
--> 115                 raise FluxCsvParserException("Unable to parse CSV response. FluxTable definition was not found.")
    117             #  # datatype,string,long,dateTime:RFC3339,dateTime:RFC3339,dateTime:RFC3339,double,string,string,string

FluxCsvParserException: Unable to parse CSV response. FluxTable definition was not found.

I suspect the error is telling me that the requested bucket is not found on the server. However, this exact same query works with influxdb cloud, and copying the query string over to Postman and inserting it into a HTTP call, posting it to the /query endpoint on the same server works as well.

The only difference between using the HTTP endpoint and the python client I can spot is the quote escaping:

In my Postman call, I had to escape them manually before posting, using a single escape like this: \".

On the call I’m sending using the python sdk, I notice that quotes are automatically double escaped like so: \\"

Could this be the cause of my issue? If so, how do I manage to single escape quotes with the python sdk?

Below is my POST body (working):

{"imports": [], "body": []},
  "query": "from(bucket: \"default-bucket\") |> range(start: 2021-09-06, stop: 2021-10-08T23:00:00Z) |> filter(fn: (r) => r._field == \"prob\") |> aggregateWindow(every: 1h, fn: count)",
  "type": "flux",
  "params": {},
  "dialect": {
    "header": true,
    "delimiter": ",",
    "annotations": [
    "commentPrefix": "#",
    "dateTimeFormat": "RFC3339"
  "now": "2019-08-24T14:15:22Z"

Here’s the output from the python client in debug mode:

send: b'{"extern": {"imports": [], "body": []}, 
"query": "from(bucket: \\"default-bucket\\")   
|> range(start: 2021-09-06, stop: 2021-10-08T23:00:00Z) 
|> filter(fn: (r) => r._field == \\"prob\\") |> 
aggregateWindow(every: 1h,     fn: count )", 
"dialect": {"header": true, "delimiter": ",", 
"annotations": ["datatype", "group", "default"], 
"commentPrefix": "#", "dateTimeFormat": "RFC3339"}}'

I’m on the latest Python influxdb-client library.

@paale thanks for using our client.

Can you share the raw output of your query?

response = client.query_api().query_raw(query)
print (codecs.decode(


@bednar Thanks for replying so quickly. Here is the output:

  "authorizations": "/api/v2/authorizations",
  "backup": "/api/v2/backup",
  "buckets": "/api/v2/buckets",
  "checks": "/api/v2/checks",
  "dashboards": "/api/v2/dashboards",
  "delete": "/api/v2/delete",
  "external": {
    "statusFeed": ""
  "flags": "/api/v2/flags",
  "labels": "/api/v2/labels",
  "me": "/api/v2/me",
  "notificationEndpoints": "/api/v2/notificationEndpoints",
  "notificationRules": "/api/v2/notificationRules",
  "orgs": "/api/v2/orgs",
  "plugins": "/api/v2/telegraf/plugins",
  "query": {
    "analyze": "/api/v2/query/analyze",
    "ast": "/api/v2/query/ast",
    "self": "/api/v2/query",
    "suggestions": "/api/v2/query/suggestions"
  "restore": "/api/v2/restore",
  "scrapers": "/api/v2/scrapers",
  "setup": "/api/v2/setup",
  "signin": "/api/v2/signin",
  "signout": "/api/v2/signout",
  "sources": "/api/v2/sources",
  "swagger": "/api/v2/swagger.json",
  "system": {
    "debug": "/debug/pprof",
    "health": "/health",
    "metrics": "/metrics"
  "tasks": "/api/v2/tasks",
  "telegrafs": "/api/v2/telegrafs",
  "users": "/api/v2/users",
  "variables": "/api/v2/variables",
  "write": "/api/v2/write"

It is not looks like a valid Query API response.

How do you initilize a base url for the client?

Here’s how I initialize the client:

client = influxdb_client.InfluxDBClient(

…where the URL looks like this:
and org is the name of the organization (not the ID).

The URL should be without api/v2 postfix.

Thanks! That was it!