Exception raising in Field APIs

[victoriacity]

The current Field APIs, including ScalarField, MatrixField, and Structfield (after #2627) use assertions statements to check input validity, for example,

taichi/python/taichi/lang/matrix.py

Line 207 in 03e2923

assert self.m == other.m and self.n == other.n, f"Dimension mismatch between shapes ({self.n}, {self.m}), ({other.n}, {other.m})"

In software engineering practice, assertion is used to verify whether the program itself is implemented correctly regardless of user inputs, while exceptions/errors are used to check validity of the inputs. Therefore quite a few occurrences of assert statements in field.py and matrix.py are supposed to raise errors.

Contributions are greatly welcomed!

[ntlm1686]

Could you please give an example of changing an assert statement to an exception?
Also, any resources that help write exceptions in Taichi are appreciated.

[gaocegege]

Could you please give an example of changing an assert statement to an exception? Also, any resources that help write exceptions in Taichi are appreciated.

I refined the exception when converting from/to numpy array in the PR #3058. And there are many other asserts in the codebase. Welcome other contributions! You can have a look at the PR, as an example.

I am unassigning myself since it is an umbrella issue.

[ntlm1686]

Could you please give an example of changing an assert statement to an exception? Also, any resources that help write exceptions in Taichi are appreciated.

I refined the exception when converting from/to numpy array in the PR #3058. And there are many other asserts in the codebase. Welcome other contributions! You can have a look at the PR, as an example.

I am unassigning myself since it is an umbrella issue.

Thanks, gocegege! I have created a pull request.