def __init__(self, clevel=5, shuffle=True, cname="blosclz"):
if not isinstance(clevel, int):
raise ValueError("`clevel` must an int.")
if not isinstance(shuffle, (bool, int)):
raise ValueError("`shuffle` must a boolean.")
shuffle = bool(shuffle)
if clevel < 0:
raise ValueError("clevel must be a positive integer")
self._clevel = clevel
self._shuffle = shuffle
list_cnames = blosc_compressor_list()
# Store the cname as bytes object internally
if hasattr(cname, 'encode'):
cname = cname.encode()
if cname not in list_cnames:
raise ValueError(
"Compressor '%s' is not available in this build" % cname)
self._cname = cname
def print_versions():
"""Print all the versions of software that BLZ relies on."""
print("-=" * 38)
print("BLZ version: %s" % blz.__version__)
print("NumPy version: %s" % numpy.__version__)
tinfo = blz.blosc_version()
blosc_cnames = blz.blosc_compressor_list()
print("Blosc version: %s (%s)" % (tinfo[0], tinfo[1]))
print("Blosc compressors: %s" % (blosc_cnames,))
if blz.numexpr_here:
print("Numexpr version: %s" % blz.numexpr.__version__)
else:
print("Numexpr version: not available "
"(version >= %s not detected)" % blz.min_numexpr_version)
print("Python version: %s" % sys.version)
if os.name == "posix":
(sysname, nodename, release, version, machine) = os.uname()
print("Platform: %s-%s" % (sys.platform, machine))
print("Byte-ordering: %s" % sys.byteorder)
print("Detected cores: %s" % blz.detect_number_of_cores())
print("-=" * 38)