class ctypes._CData This non-public class is the common base class of all ctypes data types. Among other things, all ctypes

os.getgroups() Return list of supplemental group ids associated with the current process. Availability:

ctypes.util.find_library(name) Try to find a library and return a pathname. name is the library name without any prefix

class ctypes.c_char_p Represents the C char * datatype when it points to a zero-terminated string. For a general

time.daylight Nonzero if a DST timezone is defined.

os.writev(fd, buffers) Write the contents of buffers to file descriptor fd. buffers must be a sequence

class io.RawIOBase Base class for raw binary I/O. It inherits IOBase. There is no public constructor.

read1(size=-1) Read and return up to size bytes, with at most one call to the underlying raw stream’s read()

st_dev Identifier of the device on which this file resides.

class argparse.MetavarTypeHelpFormatter