The steelwork.py program, given below, creates three types of steel objects. Carbon steel (Steel) is made of carbon and iron, alloy steel (AlloySteel) contains chromium in addition to carbon and iron. Stainless steel (StainlessSteel) contains nickel and a higher proportion of chromium. Write the missing code, in the designated locations (#TODO), in order for the program execution to yield the following output: ['Steel01', 0.6, 91]['ALSteel02', 0.6, 91, 1]['SSteel02', 0.6, 91, 11, 2] # steelwork .pyA# Author : Youcef Derbal2el class Steel:def -_init__(self,*args, **kwargs):# TODO Complete code for the __init__ method67def tostring(self):8return [self.code, self.carbon,self.iron]10@classmethod11def factory(cls,*args):n = len(args)if n == 3:121314return Steel(*args)15elif n == 4:16return Alloysteel(*args)17elif n == 5:18return StainlessSteel(*args)19el class Alloysteel(Steel):2021# TODO Add code for the -_init__ method2223 l ofdef tostring(self):return super(Alloysteel, self).tostring()+ [self.chromium]242526eclass StainlessSteel(AlloySteel):27# TODO Add code for the _init__ method2829of adef tostring(self):return super(StainlessSteel, self).tostring()+ [self.nickel]3031s1 = Steel.factory('Steel01',0.6,91)s2 = Steel.factory(1, 'ALSteel02',0.6,91)s3 = Steel.factory(2,11,'SSteel02',0.6,91)3233343536print(s1.tostring())37print(s2.tostring())38print(s3.tostring())

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Answered: The steelwork.py program, given below,…

Database System Concepts

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ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

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The steelwork.py program, given below, creates three types of steel objects. Carbon steel (Steel) is made of carbon and iron, alloy steel (AlloySteel) contains chromium in addition to carbon and iron. Stainless steel (StainlessSteel) contains nickel and a higher proportion of chromium. Write the missing code, in the designated locations (#TODO), in order for the program execution to yield the following output:

['Steel01', 0.6, 91]

['ALSteel02', 0.6, 91, 1]

['SSteel02', 0.6, 91, 11, 2]

# steelwork .py
A# Author : Youcef Derbal
2
el class Steel:
def -_init__(self,*args, **kwargs):
# TODO Complete code for the __init__ method
6
7
def tostring(self):
8
return [self.code, self.carbon,self.iron]
10
@classmethod
11
def factory(cls,*args):
n = len(args)
if n == 3:
12
13
14
return Steel(*args)
15
elif n == 4:
16
return Alloysteel(*args)
17
elif n == 5:
18
return StainlessSteel(*args)
19
el class Alloysteel(Steel):
20
21
# TODO Add code for the -_init__ method
22
23 l of
def tostring(self):
return super(Alloysteel, self).tostring()+ [self.chromium]
24
25
26
eclass StainlessSteel(AlloySteel):
27
# TODO Add code for the _init__ method
28
29
of a
def tostring(self):
return super(StainlessSteel, self).tostring()+ [self.nickel]
30
31
s1 = Steel.factory('Steel01',0.6,91)
s2 = Steel.factory(1, 'ALSteel02',0.6,91)
s3 = Steel.factory(2,11,'SSteel02',0.6,91)
32
33
34
35
36
print(s1.tostring())
37
print(s2.tostring())
38
print(s3.tostring())

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