Tin mới
selectors — High-level I/O multiplexing
mmap — Memory-mapped file support
Networking and Interprocess Communication
Execution of Python signal handlers¶
A Python signal handler does not get executed inside the low-level (C) signal handler. Instead, the low-level signal handler sets a flag which tells the virtual machine to execute the corresponding Python signal handler
faulthandler: Dump the Python traceback.
It makes little sense to catch synchronous errors like SIGFPE or SIGSEGV that are caused by an invalid operation in C code. Python will return from the signal handler to the C code, which is likely to raise the same sign
threading: Thread-based parallelism.
Python signal handlers are always executed in the main Python thread of the main interpreter, even if the signal was received in another thread. This means that signals can’t be used as a means of inter-thread communicat
Availability: Linux >= 5.1, Android >= build-time API level 31
description in the type hierarchy
Set the handler for signal signalnum to the function handler. handler can be a callable Python object taking two arguments (see below), or one of the special values signal.SIG_IGN or signal.SIG_DFL. The previous signal h
inspect: Extract information and source code from live objects.
Set the handler for signal signalnum to the function handler. handler can be a callable Python object taking two arguments (see below), or one of the special values signal.SIG_IGN or signal.SIG_DFL. The previous signal h
Note on Signal Handlers and Exceptions¶
To illustrate this issue, consider the following code: