class_docstr: The main top-level class that you instantiate once, or once per module.
  
  Example usage:
  
      ffi = FFI()
      ffi.cdef("""
          int printf(const char *, ...);
      """)
  
      C = ffi.dlopen(None)   # standard library
      -or-
      C = ffi.verify()  # use a C compiler: verify the decl above is right
  
      C.printf("hello, %s!\n", ffi.new("char[]", "world"))
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docstr: Unpack an array of C data of the given length,
  returning a Python string/unicode/list.
  
  If 'cdata' is a pointer to 'char', returns a byte string.
  It does not stop at the first null.  This is equivalent to:
  ffi.buffer(cdata, length)[:]
  
  If 'cdata' is a pointer to 'wchar_t', returns a unicode string.
  'length' is measured in wchar_t's; it is not the size in bytes.
  
  If 'cdata' is a pointer to anything else, returns a list of
  'length' items.  This is a faster equivalent to:
  [cdata[i] for i in range(length)]
code: def unpack(self, cdata, length):
      """Unpack an array of C data of the given length,
      returning a Python string/unicode/list.
  
      If 'cdata' is a pointer to 'char', returns a byte string.
      It does not stop at the first null.  This is equivalent to:
      ffi.buffer(cdata, length)[:]
  
      If 'cdata' is a pointer to 'wchar_t', returns a unicode string.
      'length' is measured in wchar_t's; it is not the size in bytes.
  
      If 'cdata' is a pointer to anything else, returns a list of
      'length' items.  This is a faster equivalent to:
      [cdata[i] for i in range(length)]
      """
      return self._backend.unpack(cdata, length)
  
imports: import sys, types
  from .lock import allocate_lock
  from .error import CDefError
  from .None import model
label_desc: Use image node_id 17 for calling the FFI obj's underlying member method code with example usage: obj.unpack(cdata, length) and returns: self