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We now move to a different matter types associate.

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For now, we work with the object methods like for example, the set face color and the set I color.

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The fact that this takes in the so as arguments, you're simply tells us that it's an object method.

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And with this object method we could modify the objects attributes, for example.

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So with a set face color, we could modify the face color attribute with the set I call out to modify

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the eye color attribute.

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Now let's define a separate method, which we'll call set.

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All right, a is.

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I.

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Equal is I equal face.

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So we have that and then we return self doubt.

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These color equals of the eye color.

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Now, the aim of this matter right here is to tell us whether the eye color is the same as a face color.

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So that's it.

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And obviously, we are going to take in the current object because we are going to do some modifications.

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All right.

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Up, because this output would depend on the object's face color and also its eye color attribute.

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Run that we have the side.

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Let's take this now.

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Let's say we have side that is eye, equal face.

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I'm going to do that.

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And as it.

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See, we have true telling knows that for the SAT.

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Let's go back to the SAT where we actually have the eye and the face the same.

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Let's bring out this.

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So I will print out all printed out already in the face color.

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Okay.

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We had the face called on the eye color yellow about black.

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So that was fine.

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Now if we modify this to red or on it.

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We still have double read this.

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An error or the error comes from the fact that, yeah, we didn't take this into consideration.

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That's eye color.

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Right.

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See they have now two different, uh, we look at the if I equal face we see now as false.

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Uh, also note that instead of calling this is I equal face like this I was defining the object and

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then we the object we call the matter, we could simply just have the smiley self so we could define

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smiley which takes on false face color.

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Equal red.

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That was it.

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So, yeah, we could define this class like this with this constructor would define the class ones that

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define the class.

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We now call on this.

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No.

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We run it.

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See, it gives us the same output.

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We can also define just the class like this.

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And then we pass inside.

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So now you see the reason why whenever we get this self right.

50
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Yeah, we're treating it as an object.

51
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So this is actually an object we're passing in.

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So this be seen clearly from the fact that we'll just define the class name here.

53
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So we just define the smiley and then we call the method and then pass this object which has already

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been defined.

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So this object set which has been defined.

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Right, yeah.

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We pass it and it just acts as if we were the same as what we had done previously.

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That was we had said that is, uh, equal face and that was it.

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Let's print it out.

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Print is out.

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And there we go.

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See, we have the same results from this.

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We could also something like this instead of having the SAT here, let's copy this from this to dissolve

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on that.

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00:04:15,350 --> 00:04:17,990
And so we have exactly the same results.

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00:04:18,920 --> 00:04:27,440
Now also note that there are some methods in a class which do not need to make use of, for example,

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this attributes of that object.

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Oh, there are some methods which don't need to take into consideration the fact that the modification

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we had to do in that matter will depend on the object with which we are working with.

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00:04:44,450 --> 00:04:53,150
A simple example could be suppose that we are given now another attribute that is the self that reduce

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self, the radius attribute reduce and the radius.

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Right.

73
00:05:01,130 --> 00:05:01,730
Yeah.

74
00:05:02,780 --> 00:05:05,900
By default let's say takes a value of five.

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So we take a float everybody of five by default and then we want to calculate the area O and area and

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00:05:17,990 --> 00:05:27,110
area that's and self and then we want to return the self doubt reduce.

77
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Times.

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00:05:31,680 --> 00:05:35,640
C 3.14 is an approximation.

79
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The area of a circle is PI Radio Square.

80
00:05:38,460 --> 00:05:46,770
So we have this radius that's a 3.1, four times the radius square.

81
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That's the power of two.

82
00:05:51,030 --> 00:05:51,810
The power of two.

83
00:05:52,230 --> 00:05:59,100
Okay, so with this, we could compute the area, the head area of the smiley run.

84
00:05:59,100 --> 00:06:02,250
This let's just think for just happy.

85
00:06:02,460 --> 00:06:07,140
So we have happy that hat area called that.

86
00:06:07,410 --> 00:06:08,040
There we go.

87
00:06:10,140 --> 00:06:14,160
We could define the smiley so that it has the radius.

88
00:06:14,160 --> 00:06:17,760
So we could have radius equals to for example, and that's it.

89
00:06:18,390 --> 00:06:20,940
But what if we want to define a separate function?

90
00:06:20,940 --> 00:06:24,090
We just calculate the area based on the radius.

91
00:06:24,090 --> 00:06:29,100
So we have this area function which takes in the radius.

92
00:06:29,460 --> 00:06:35,850
So it takes in the radius and then it returns PI times the radio square.

93
00:06:37,410 --> 00:06:45,450
After defining this kind of function, which doesn't actually depend on the current object as a static

94
00:06:45,450 --> 00:06:49,340
matter, we have to include this decorator right here.

95
00:06:49,560 --> 00:06:54,090
The way we put out decorators is by using the act.

96
00:06:54,480 --> 00:07:00,270
And then particularly specifically for this decorator, it's called the static matter.

97
00:07:00,690 --> 00:07:03,210
So doing this or on that and there we go.

98
00:07:03,210 --> 00:07:09,960
We see that we use a classes named Smiley and then we pass in the value for directly.

99
00:07:10,170 --> 00:07:14,970
And yeah, we don't even need to construct the.

100
00:07:16,020 --> 00:07:22,800
SMILEY And also, we don't need to pass in any object into this method for us to get an output.

101
00:07:23,700 --> 00:07:32,400
And also, as we have seen from the beginning, we have all we could create attributes which are specific

102
00:07:32,520 --> 00:07:33,330
to the class.

103
00:07:33,720 --> 00:07:40,650
So we could have an attribute to is face or its upper body.

104
00:07:41,460 --> 00:07:43,050
It is upper body.

105
00:07:43,740 --> 00:07:45,210
And now we said that's true.

106
00:07:46,410 --> 00:07:48,540
So this is specific to the class.

107
00:07:49,140 --> 00:07:56,980
Now, if we want to define a function which takes this and then does some modifications, like said,

108
00:07:57,540 --> 00:08:08,460
if we want to say is body or is upper body there, you have to parse in this class to specify that we're

109
00:08:08,460 --> 00:08:09,480
passing in the class.

110
00:08:10,050 --> 00:08:14,610
And yeah, we return simply is upper body?

111
00:08:15,000 --> 00:08:17,280
Is upper body.

112
00:08:18,320 --> 00:08:19,090
So there we go.

113
00:08:19,110 --> 00:08:20,850
Now, yeah, let's take this off.

114
00:08:21,090 --> 00:08:30,810
We have the smiley that is our upper body on this.

115
00:08:30,960 --> 00:08:32,070
We have this arrow.

116
00:08:32,730 --> 00:08:34,560
Now we need to put in class.

117
00:08:34,560 --> 00:08:35,040
Yes.

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00:08:35,040 --> 00:08:36,470
Yet as a body.

119
00:08:36,480 --> 00:08:37,200
And that's fine.

120
00:08:37,740 --> 00:08:43,040
We get into this output because this matches with the method name.

121
00:08:43,050 --> 00:08:49,010
So let's change this upper body and your upper body around that again.

122
00:08:49,020 --> 00:08:49,740
And that's okay.

123
00:08:50,730 --> 00:08:56,850
So it is within the three different method types, the class methods, the static methods, and also

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the instance methods.