Bad host format in python client library doc

[jstirnaman]

Possible JS/regex bug

The error grpc+tcp://localhost:8181:443 suggests an invalid URI where two ports are specified(:443 and :8181). I'm not sure if the following would work:
client = InfluxDBClient3(host="localhost", port=8181)
https://discord.com/channels/1325200757427015701/1397402549010825326

Slack Message

[MeelahMe]

@jstirnaman

I investigated this issue and from my testing I was able to reproduce the error reported in the Discord:

Cannot parse URI: 'grpc+tcp://localhost:8181:443' due to syntax error at character '' (position 29)

I tested multiple host parameters formats using the InfluxDB 3 Python client constructor:

Test Results

FAILS - Double port error:
InfluxDBClient3(host="localhost:8181", ...)

WORKS - Full functionality :
InfluxDBClient3(host="http://localhost:8181", ...)

FAILS - Connection refused:
InfluxDBClient3(host="localhost", port=8181, ...)

Root Cause Confirmed:

I ran additional diagnostics that show the client constructs these malformed URIs:

• host="localhost:8181" → grpc+tcp://localhost:8181:443
• host="localhost:9999" → grpc+tcp://localhost:9999:443
• host="example.com:8181" → grpc+tcp://example.com:8181:443

When a port is included in the hostname, the client appends :443, creating invalid double-port URIs.

Discord Solution is Incorrect:

The suggested fix host="localhost", port=8181 does not seem to work. While the client accepts a port parameter via **kwargs, it fails during actual connection attempts with Connection refused errors.

Documentation Source Found:

The problematic examples appear throughout the official documentation at:

https://docs.influxdata.com/influxdb3/core/reference/client-libraries/v3/python/

Fix Needed? :

All instances of host=f"localhost:8181" in the documentation should be changed to host="http://localhost:8181".

This affects 8+ code examples throughout the Python client library documentation page.

I'm happy to help update the documentation if needed.