Several instrumentation failures with TypeError (urllib, flask, sqlite3, logging) on dev version

[tammy-baylis-swi]

Describe your environment

OS: Ubuntu
Python version: 3.12.8
SDK version: 1.30.0dev
API version: 0.51b0dev

What happened?

opentelemetry-bootstrap and opentelemetry-instrument using Otel's opentelemetry-distro at main branch (1.30.0dev/0.51b0dev) fail with an error stack at loading of the urllib/Flask/sqlite3/logging instrumentor at app startup. urllib, sqlite3, and logging are some of the default_instrumentations:

Instrumenting of urllib failed
Traceback (most recent call last):
  File "/opentelemetry-python-contrib/opentelemetry-instrumentation/src/opentelemetry/instrumentation/auto_instrumentation/_load.py", line 104, in _load_instrumentors
    conflict = get_dist_dependency_conflicts(entry_point_dist)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opentelemetry-python-contrib/opentelemetry-instrumentation/src/opentelemetry/instrumentation/dependencies.py", line 50, in get_dist_dependency_conflicts
    for dep in dist.requires:
               ^^^^^^^^^^^^^
TypeError: 'NoneType' object is not iterable
Failed to auto initialize opentelemetry
Traceback (most recent call last):
  File "/opentelemetry-python-contrib/opentelemetry-instrumentation/src/opentelemetry/instrumentation/auto_instrumentation/sitecustomize.py", line 39, in initialize
    _load_instrumentors(distro)
  File "/opentelemetry-python-contrib/opentelemetry-instrumentation/src/opentelemetry/instrumentation/auto_instrumentation/_load.py", line 129, in _load_instrumentors
    raise exc
  File "/opentelemetry-python-contrib/opentelemetry-instrumentation/src/opentelemetry/instrumentation/auto_instrumentation/_load.py", line 104, in _load_instrumentors
    conflict = get_dist_dependency_conflicts(entry_point_dist)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opentelemetry-python-contrib/opentelemetry-instrumentation/src/opentelemetry/instrumentation/dependencies.py", line 50, in get_dist_dependency_conflicts
    for dep in dist.requires:
               ^^^^^^^^^^^^^
TypeError: 'NoneType' object is not iterable

EDIT: This also happens with the instrumentors for Flask, sqlite3, and logging. The TypeError eventually stops if I set OTEL_PYTHON_DISABLED_INSTRUMENTATIONS=flask,logging,sqlite3,urllib

This doesn't happen with latest release 1.29.0/0.50b0, but something else odd happens and I'm not sure if related. Spans from opentelemetry-instrumentation-flask end up being kind Internal instead of Server. Either way, error stacks not good.

Steps to Reproduce

I'm using main branches of the SDK and API (1.30.0dev/0.51b0dev) to auto-instrument a basic Flask app:

pip install opentelemetry-distro opentelemetry-exporter-otlp
opentelemetry-bootstrap -a install
opentelemetry-instrument flask run

with app.py as:

from flask import Flask

app = Flask(__name__)

@app.route("/abc/")
def request_abc():
    return "Done"

Expected Result

No error traces

Actual Result

Error trace as above

Additional context

No response

Would you like to implement a fix?

None

[tammy-baylis-swi]

Sorry this should have been a contrib issue. Closing this in favour of open-telemetry/opentelemetry-python-contrib#3167