# PEP-0498 specifies that '\\' and '#' must be disallowed explicitly, whereas
# MicroPython relies on the syntax error as a result of the substitution.
print(f"\\")
print(f"#")
try:
eval("f'{\}'")
except SyntaxError:
print("SyntaxError")
try:
eval("f'{#}'")
except SyntaxError:
print("SyntaxError")