micropython/tests/basics/bytes_find.py

print(b"hello world".find(b"ll"))
print(b"hello world".find(b"ll", None))
print(b"hello world".find(b"ll", 1))
print(b"hello world".find(b"ll", 1, None))
print(b"hello world".find(b"ll", None, None))
print(b"hello world".find(b"ll", 1, -1))
print(b"hello world".find(b"ll", 1, 1))
print(b"hello world".find(b"ll", 1, 2))
print(b"hello world".find(b"ll", 1, 3))
print(b"hello world".find(b"ll", 1, 4))
print(b"hello world".find(b"ll", 1, 5))
print(b"hello world".find(b"ll", -100))
print(b"0000".find(b'0'))
print(b"0000".find(b'0', 0))
print(b"0000".find(b'0', 1))
print(b"0000".find(b'0', 2))
print(b"0000".find(b'0', 3))
print(b"0000".find(b'0', 4))
print(b"0000".find(b'0', 5))
print(b"0000".find(b'-1', 3))
print(b"0000".find(b'1', 3))
print(b"0000".find(b'1', 4))
print(b"0000".find(b'1', 5))

# Non-ascii values (make sure not treated as unicode-like)
print(b"\x80abc".find(b"a", 1))