circuitpython/tests/io/bytesio_ext2.py

14 lines
334 B
Python

try:
import uio as io
except ImportError:
import io
a = io.BytesIO(b"foobar")
try:
a.seek(-10)
except Exception as e:
# CPython throws ValueError, but MicroPython has consistent stream
# interface, so BytesIO raises the same error as a real file, which
# is OSError(EINVAL).
print(type(e), e.args[0] > 0)