Built-in Exceptions — Python 3.13.3 documentation
1 day ago · The built-in exception classes can be subclassed to define new exceptions; programmers are encouraged to derive new exceptions from the Exception class or one of its subclasses, and not from BaseException.
8. Errors and Exceptions — Python 3.13.3 documentation
1 day ago · Programs may name their own exceptions by creating a new exception class (see Classes for more about Python classes). Exceptions should typically be derived from the Exception class, either directly or indirectly.
Exception Handling — Python 3.13.3 documentation
2 days ago · exception should be a Python exception class. The format and subsequent parameters help format the error message; they have the same meaning and values as in PyUnicode_FromFormat() . format is an ASCII-encoded string.
Exception classes raised by urllib.request - Python
2 days ago · The urllib.error module defines the exception classes for exceptions raised by urllib.request. The base exception class is URLError . The following exceptions are raised by urllib.error as appropriate:
9. Classes — Python 3.13.3 documentation
2 days ago · Python classes provide all the standard features of Object Oriented Programming: the class inheritance mechanism allows multiple base classes, a derived class can override any methods of its base class or classes, and a method can call the method of …
8. Compound statements — Python 3.9.22 documentation
Mar 9, 2022 · sys.exc_info() returns a 3-tuple consisting of the exception class, the exception instance and a traceback object (see section The standard type hierarchy) identifying the point in the program where the exception occurred.
abc — Abstract Base Classes — Python 3.13.3 documentation
3 days ago · This module provides the infrastructure for defining abstract base classes (ABCs) in Python, as outlined in PEP 3119; see the PEP for why this was added to Python. (See also PEP 3141 and the numbers module regarding a type hierarchy for numbers based on ABCs.)
logging — Logging facility for Python — Python 3.13.3 …
The logger name hierarchy is analogous to the Python package hierarchy, and identical to it if you organise your loggers on a per-module basis using the recommended construction logging.getLogger(__name__).
The Python 2.3 Method Resolution Order
As a general rule, hierarchies such as the previous one should be avoided, since it is unclear if F should override E or vice-versa. Python 2.3 solves the ambiguity by raising an exception in the creation of class G, effectively stopping the programmer from generating ambiguous hierarchies.
Logging HOWTO — Python 3.13.3 documentation
Logging is performed by calling methods on instances of the Logger class (hereafter called loggers). Each instance has a name, and they are conceptually arranged in a namespace hierarchy using dots (periods) as separators.