Exceptions

Links

• Built-in Exceptions: https://docs.python.org/3/library/exceptions.html

Most Important Exceptions

• TypeError: Raised when an operation or function is applied to an object of inappropriate type. The associated value is a string giving details about the type mismatch.

• NotImplementedError: In user defined base classes, abstract methods should raise this exception when they require derived classes to override the method, or while the class is being developed to indicate that the real implementation still needs to be added.

• ValueError: Raised when an operation or function receives an argument that has the right type but an inappropriate value, and the situation is not described by a more precise exception such as IndexError.

Logging Exceptions

try:
    something()
except Exception:
    logger.error("something bad happened", exc_info=True)

also see https://www.loggly.com/blog/exceptional-logging-of-exceptions-in-python/