Errata

I'm enjoying this book very much so far (chapter 3). I am very, very confident that it will stay that way :)

The description in the text is correct:
"In the path decorator, specify the HTTP status code that should be returned if all goes well (exceptions will generate their own codes and override it)."

But the code example puts the status code in the parameter list of the path function. It won't generate an error but won't work either.

The code example should look like this:
@app.get("/happy", status_code=202)
def happy():
return ":)"

The get_one function performs a case sensitive string comparison (_creature.name == name). But, the unit test in Example 9-3 pass a lowercase string "yeti" while the data in _creatures is capitalized as "Yeti".

Correction: Use .lower() on both sides of the comparison to ensure case insensitive matching.

Code Change:
if _creature.name.lower() == name.lower():

The sample Creature object is defined with name="yeti", but the fake data layer contains "Yeti". Even with case insensitive searching, the final equality assertion (assert resp == sample) will fail because Pydantic / Python object equality is case sensitive for string fields.

Correction: Update the sample object's name to match the casing in the data layer.

Code Change:
sample = Creature(name="Yeti", ...)

In the test_get_missing function, the assertion checks a variable named data (assert data is None). However the result of the function call was assigned to the variable resp. This results in a NameError.

Correction: Change the assertion to reference the correct variable.

Code Change:
def test_get_missing():
resp = code.get_one("boxturtle")
assert resp is None

`@app.post("/agent")` should be `@app.get("/agent")`.

In example 8-1 the (import uvicorn) is inside the
if __name__ == "__main__" but in example 8-4
it is outside the condition.

Example 12-5: the function names mismatch with the explanation of the arguments such as the function name is test_summer_b() and the argument is described as test_caller_b(). And also, the names are not consistent in the example.

The example 12-14 /unit/service/test_creature.py has import statement as: "from data import creature as data". But we are testing here the service and it should be "from service import creature as data".

Please contact me if you would like to have full list of my update to include in the github source code version.

Thank you,

Best regards,
Battogtokh