code: def compress(data, compresslevel=_COMPRESS_LEVEL_BEST, *, mtime=None):
      """Compress data in one shot and return the compressed string.
  
      compresslevel sets the compression level in range of 0-9.
      mtime can be used to set the modification time. The modification time is
      set to the current time by default.
      """
      if mtime == 0:
          # Use zlib as it creates the header with 0 mtime by default.
          # This is faster and with less overhead.
          return zlib.compress(data, level=compresslevel, wbits=31)
      header = _create_simple_gzip_header(compresslevel, mtime)
      trailer = struct.pack(
          "<LL", zlib.crc32(data), (len(data) & 0xFFFFFFFF)
      )
      # Wbits=-15 creates a raw deflate block.
      return (
          header
          + zlib.compress(data, level=compresslevel, wbits=-15)
          + trailer
      )
  
imports: import struct, sys, time, os
  import zlib
  import builtins
  import io
  import _compression
label_desc: Use image node_id 6 for calling a global function with example usage: compress(data, compresslevel) and returns: unknown, zlib