1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
# -m 10015
d = {0: 0, 1: 1}
# output {0: 0, 1: 1}
print(d)
i = 2
while i <= 40:
d[i] = d[i - 2] + d[i - 1]
del d[i - 2]
i = i + 1
del i
# output 824 bytes in use; 10 refs in use
mem()
# output {39: 63245986, 40: 102334155}
print(d)
gc()
# output 824 bytes in use; 10 refs in use
mem()
del d
# output 72 bytes in use; 3 refs in use
mem()
a = {}
a[True] = a
b = {1: a}
del a
# output {1: {True: {True: {...: ...}}}}
print(b)
# output 584 bytes in use; 10 refs in use
mem()
del b[1]
# output {}
print(b)
# output 552 bytes in use; 9 refs in use
mem()
gc()
# output 312 bytes in use; 6 refs in use
mem()
del b
# output 72 bytes in use; 3 refs in use
mem()