code: def savez(file, *args, **kwds):
      """Saves one or more arrays into a file in uncompressed ``.npz`` format.
  
      Arguments without keys are treated as arguments with automatic keys named
      ``arr_0``, ``arr_1``, etc. corresponding to the positions in the argument
      list. The keys of arguments are used as keys in the ``.npz`` file, which
      are used for accessing NpzFile object when the file is read by
      :func:`cupy.load` function.
  
      Args:
          file (file or str): File or filename to save.
          *args: Arrays with implicit keys.
          **kwds: Arrays with explicit keys.
  
      .. seealso:: :func:`numpy.savez`
  
      """
      args = map(cupy.asnumpy, args)
      for key in kwds:
          kwds[key] = cupy.asnumpy(kwds[key])
      numpy.savez(file, *args, **kwds)
  
file_path: cupy/cupy/_io/npz.py
imports: import warnings
  import numpy
  import cupy
label_desc: Use image node_id 3 for calling a global function with example usage: savez(file) without return types