Language Reference

Error handling

Handle failures with readable try, catch, and finally blocks.

Next: generators Async

Error blocks

try for risky operations.
catch to handle errors.
finally for cleanup.

Try, catch, finally

Use structured blocks to capture errors and add fallback behavior.

errors.pln

try do
    result = call fetch_data with "https://api.example.com"
    print result
catch exception as e do
    logging error "Error occurred: " + str(e)
finally do
    print "Cleanup completed"

Raising errors

When you need to stop execution, raise a specific error.

raise.pln

if value is empty then raise ValueError("Value cannot be empty")

Error handling tips

Catch only the errors you can handle.
Use clear error messages for faster debugging.
Always close files in finally blocks.