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Neha Kumawat
2 years ago
#!/usr/bin/python3
import dis
def sum():
vara = 10
varb = 20
sum = vara + varb
print ("vara + varb = %d" % sum)
# Call dis function for the function.
dis.dis(sum)
6 0 LOAD_CONST 1 (10)
3 STORE_FAST 0 (vara)
7 6 LOAD_CONST 2 (20)
9 STORE_FAST 1 (varb)
9 12 LOAD_FAST 0 (vara)
15 LOAD_FAST 1 (varb)
18 BINARY_ADD
19 STORE_FAST 2 (sum)
10 22 LOAD_CONST 3 ('vara + varb = %d')
25 LOAD_FAST 2 (sum)
28 BINARY_MODULO
29 PRINT_ITEM
30 PRINT_NEWLINE
31 LOAD_CONST 0 (None)
34 RETURN_VALUE
$pdb.py sum.py
> /test/sum.py(3)()
-> import dis
(Pdb) n
> /test/sum.py(5)()
-> def sum():
(Pdb) n
>/test/sum.py(14)()
-> dis.dis(sum)
(Pdb) n
6 0 LOAD_CONST 1 (10)
3 STORE_FAST 0 (vara)
7 6 LOAD_CONST 2 (20)
9 STORE_FAST 1 (varb)
9 12 LOAD_FAST 0 (vara)
15 LOAD_FAST 1 (varb)
18 BINARY_ADD
19 STORE_FAST 2 (sum)
10 22 LOAD_CONST 3 ('vara + varb = %d')
25 LOAD_FAST 2 (sum)
28 BINARY_MODULO
29 PRINT_ITEM
30 PRINT_NEWLINE
31 LOAD_CONST 0 (None)
34 RETURN_VALUE
--Return--
> /test/sum.py(14)()->None
-v dis.dis(sum)
(Pdb) n
--Return--
> (1)()->None
(Pdb)
#!/usr/bin/python3
vara = 10
varb = 20
sum = vara + varb
print "vara + varb = %d" % sum
$cProfile.py sum.py
vara + varb = 30
4 function calls in 0.000 CPU seconds
Ordered by: standard name
ncalls tottime percall cumtime percall filename:lineno
1 0.000 0.000 0.000 0.000 :1()
1 0.000 0.000 0.000 0.000 sum.py:3()
1 0.000 0.000 0.000 0.000 {execfile}
1 0.000 0.000 0.000 0.000 {method ......}
#!/usr/bin/python3
vara = 10
varb = 20
sum = vara + varb
print "vara + varb = %d" % sum
$tabnanny.py -v sum.py
'sum.py': Clean bill of health.