exception Warning Base class for warning categories.

exception ConnectionAbortedError A subclass of ConnectionError, raised when a connection attempt is aborted by

exception NameError Raised when a local or global name is not found. This applies only to unqualified names. The associated

exception PermissionError Raised when trying to run an operation without the adequate access rights - for example filesystem

exception ConnectionError A base class for connection-related issues. Subclasses are

exception ImportWarning Base class for warnings about probable mistakes in module imports.

exception OSError([arg]) exception OSError(errno, strerror[, filename[, winerror[, filename2]]]) This exception

characters_written An integer containing the number of characters written to the stream before it blocked. This attribute is

exception BlockingIOError Raised when an operation would block on an object (e.g. socket) set for non-blocking operation. Corresponds

exception MemoryError Raised when an operation runs out of memory but the situation may still be rescued (by deleting some objects)