micropython/tests/extmod/uzlib_decompio.py

try:
    import zlib
except ImportError:
    import uzlib as zlib
import uio as io


# Raw DEFLATE bitstream
buf = io.BytesIO(b'\xcbH\xcd\xc9\xc9\x07\x00')
inp = zlib.DecompIO(buf, -8)
print(buf.seek(0, 1))
print(inp.read(1))
print(buf.seek(0, 1))
print(inp.read(2))
print(inp.read())
print(buf.seek(0, 1))
print(inp.read(1))
print(inp.read())
print(buf.seek(0, 1))


# zlib bitstream
inp = zlib.DecompIO(io.BytesIO(b'x\x9c30\xa0=\x00\x00\xb3q\x12\xc1'))
print(inp.read(10))
print(inp.read())

# zlib bitstream, wrong checksum
inp = zlib.DecompIO(io.BytesIO(b'x\x9c30\xa0=\x00\x00\xb3q\x12\xc0'))
try:
    print(inp.read())
except OSError as e:
    print(repr(e))