What is shared library in Python?
Shared libraries are libraries that are loosely coupled to the programs and extensions that depend on them. When loading an executable into memory, an operating system finds all dependent shared libraries and links them to the executable so that it can run.
How do you create a shared object in Python?
If the object is immutable, Python will check if the given object matches any shared objects already cached in memory. In the case that a shared object is matched, the variable is directly referred to that pre-allocated object. Otherwise, a new object is created.
How to install a shared library in Linux?
When you install a new version of a library, you install it in one of a few special directories and then run the program ldconfig (8). ldconfig examines the existing files and creates the sonames as symbolic links to the real names, as well as setting up the cache file /etc/ld.so.cache (described in a moment).
Where are shared libraries placed in the filesystem?
Shared libraries must be placed somewhere in the filesystem. Most open source software tends to follow the GNU standards; for more information see the info file documentation at info:standards#Directory_Variables.
How are shared libraries used in Windows 10?
When loading an executable into memory, an operating system finds all dependent shared libraries and links them to the executable so that it can run. Windows, macOS and Linux all provide a way to build executables and libraries that contain links to the shared libraries they depend on, instead of directly linking the libraries themselves.
Where to find shared libraries in Red Hat?
Note that if your library calls programs that can only be called via libraries, you should place those programs in /usr/local/libexec (which becomes /usr/libexec in a distribution). One complication is that Red Hat-derived systems don’t include /usr/local/lib by default in their search for libraries; see the discussion below about /etc/ld.so.conf.