I made a few changes:
import gc
from memory_profiler import profile
@profile
def test1():
a = [0] * 1024**2
del a
a = [0] * 1024**2
del a
a = [0] * 1024**2
del a
a = [0] * 1024**2
del a
a = [0] * 1024**2
del a
a = [0] * 1024**2
del a
a = [0] * 1024**2
del a
a = [0] * 1024**2
del a
a = [0] * 1024**2
del a
a = [0] * 1024**2
del a
gc.collect() # nothing change if I comment this
@profile
def test2():
for i in range(10):
a = [0] * 1024**2
del a
del i
gc.collect() # nothing change if I comment this
test1()
test2()
# end of code
Output:
Filename: profile.py
Line # Mem usage Increment Line Contents
================================================
5 @profile
6 8.688 MB 0.000 MB def test1():
7 16.691 MB 8.004 MB a = [0] * 1024**2
8 8.688 MB -8.004 MB del a
9 16.680 MB 7.992 MB a = [0] * 1024**2
10 16.680 MB 0.000 MB del a
11 16.680 MB 0.000 MB a = [0] * 1024**2
12 16.680 MB 0.000 MB del a
13 16.680 MB 0.000 MB a = [0] * 1024**2
14 16.680 MB 0.000 MB del a
15 16.680 MB 0.000 MB a = [0] * 1024**2
16 16.680 MB 0.000 MB del a
17 16.680 MB 0.000 MB a = [0] * 1024**2
18 16.680 MB 0.000 MB del a
19 16.680 MB 0.000 MB a = [0] * 1024**2
20 16.680 MB 0.000 MB del a
21 16.680 MB 0.000 MB a = [0] * 1024**2
22 16.680 MB 0.000 MB del a
23 16.680 MB 0.000 MB a = [0] * 1024**2
24 16.680 MB 0.000 MB del a
25 16.680 MB 0.000 MB a = [0] * 1024**2
26 16.680 MB 0.000 MB del a
27 16.680 MB 0.000 MB gc.collect() # nothing change if I
comment this
Filename: profile.py
Line # Mem usage Increment Line Contents
================================================
30 @profile
31 16.691 MB 0.000 MB def test2():
32 16.691 MB 0.000 MB for i in range(10):
33 16.691 MB 0.000 MB a = [0] * 1024**2
34 16.691 MB 0.000 MB del a
35 16.691 MB 0.000 MB del i
36 16.691 MB 0.000 MB gc.collect() # nothing change if I
comment this
If I make the two functions identical, the behave the same.
Maarten
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