2025-10-10 16:07:00 +08:00

14 lines
191 B
Python

d = {}
print(d.setdefault(1))
print(d.setdefault(1))
print(d.setdefault(5, 42))
print(d.setdefault(5, 1))
print(d[1])
print(d[5])
d.pop(5)
print(d.setdefault(5, 1))
print(d[1])
print(d[5])