Python 3.3 "startswith" TypeError about flask-debugtoolbar HOT 4 CLOSED

I wasn't able to reproduce this in my test app using SQLite. Can you provide some more details on your app & environment, including the versions of Flask-SQLAlchemy and SQLAlchemy you're using and the database driver used. It might also help to narrow it down to a small test app that exhibits the problem, such as if it happens to occur only with custom SQL queries instead of SQLAlchemy ORM queries.

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Sorry for the late reply, I'm using MySQL 5.5.34 and Python 3.3.1 on Ubuntu 13.04, here are some details:

Flask==0.10.1
Flask-DebugToolbar==0.9.0
Flask-SQLAlchemy==1.0
SQLAlchemy==0.8.2
Werkzeug==0.9.4
cymysql==0.6.7

The error happens even on the simplest (SQLAlchemy ORM) of queries. I added an "print(statement)" as first line in dump_query ("../panels/sqlalchemy.py", line 25), right before the "startswith" error is triggered. This is what I got, for a single get-by-id SQLAlchemy ORM query view:

b'SELECT resource.id AS resource_id, resource.type AS resource_type, resource.name AS resource_name \nFROM resource \nWHERE resource.id = %s'

The "statement" seems to be a "bytes literal" at this point in execution: "Bytes literals are always prefixed with 'b' or 'B'; they produce an instance of the bytes type instead of the str type", and apparently startswith cannot check if a "byte literal" starts with a str, hence the error. Some type cast probably would fix the issue, but I'm not sure where is the right place to do the cast.

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Please try this fix. It should handle SQL queries passed as bytes values.

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Works great, many thanks!

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