Keywords

Hard Keywords

The following are reserved keywords in Sharpy:

Keyword	Notes
and	Boolean AND
as	Aliasing for imports
assert	Assertion statement
auto	Inferred type for shadowing
break	Break statement for loops
case	Pattern matching case
class	Class declaration
const	Constant declaration
continue	Continue statement for loops
def	Function/method definition
elif	Else-if block
else	Else block
enum	Enumeration declaration
event	Event declaration
except	Exception handler
False	Boolean false literal
finally	Finally block
for	For loop
from	Selective imports
if	Conditional
import	Import statement
in	Membership test
interface	Interface declaration
is	Identity comparison
lambda	Lambda expression
match	Pattern matching
maybe	Optional from nullable expressions
None	None/null literal
not	Boolean NOT
or	Boolean OR
pass	No-op placeholder
property	Property declaration
raise	Raise exception
return	Return statement
struct	Struct declaration
True	Boolean true literal
to	Type coercion operator
try	Try block
type	Type alias declaration
while	While loop
with	Context manager
yield	Generators
async	Async programming
await	Async programming
del	Delete statement

Soft Keywords (Context-Dependent)

Keyword	Context	Notes
_	Pattern matching	Wildcard pattern (in case clauses)
_	Function call arguments	Partial application placeholder
get	Properties	Property getter
init	Properties	Property set-on-initialization only
set	Properties	Property setter

Underscore (_) disambiguation:

The _ identifier is context-sensitive:

• In case pattern positions: wildcard pattern (matches anything, binds nothing)
• In function call argument positions: partial application placeholder
• In assignment targets: regular identifier (conventionally used to discard values)
• In type annotations: regular identifier (not recommended)

See partial_application.md for detailed disambiguation rules.

Future Keywords

These keywords are not currently used in Sharpy, but are reserved for the future.

Keyword	Notes
defer	Deferred execution
do	Block expression