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#!/usr/bin/env python3
 
### 余再帰
def unfoldr(f):
    def wrapper(seed):
        acc = []
        while True:
            match f(seed):
                case a, b:
                    acc.append(a)
                    seed = b
                case None:
                    return acc
    return wrapper
 
@unfoldr
def d2b_engine(target):
    return None if target == 0 else (target % 2, target // 2)
 
def dec2bin(target):
    return [i == 1 for i in reversed(d2b_engine(target))]
 
if __name__ == '__main__':
    print(dec2bin(26))
 
 

Traceback (most recent call last):
  File "/usr/lib/python3.9/py_compile.py", line 144, in compile
    code = loader.source_to_code(source_bytes, dfile or file,
  File "<frozen importlib._bootstrap_external>", line 918, in source_to_code
  File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
  File "./prog.py", line 8
    match f(seed):
          ^
SyntaxError: invalid syntax

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python3.9/py_compile.py", line 150, in compile
    raise py_exc
py_compile.PyCompileError:   File "./prog.py", line 8
    match f(seed):
          ^
SyntaxError: invalid syntax

Standard output is empty