1 00:00:00,590 --> 00:00:01,430 Hello, dear friends. 2 00:00:01,910 --> 00:00:06,680 In this lesson, we will learn operators as a concept in Python. 3 00:00:07,190 --> 00:00:07,940 So let's start. 4 00:00:08,270 --> 00:00:09,170 So what does this mean? 5 00:00:09,320 --> 00:00:10,250 Operators? 6 00:00:11,060 --> 00:00:18,020 Well, basically, operators are the constructs which can manipulate the value of operands. 7 00:00:18,650 --> 00:00:19,850 OK, you already knew that. 8 00:00:19,850 --> 00:00:21,170 But how do they do that? 9 00:00:21,810 --> 00:00:22,550 Let's have a look. 10 00:00:23,930 --> 00:00:29,030 For example, we have two values, and we want to write this expression, right? 11 00:00:29,210 --> 00:00:30,440 Four plus five. 12 00:00:31,010 --> 00:00:33,830 So here four and five are called operands. 13 00:00:34,340 --> 00:00:38,450 And the plus sign is called the operator. 14 00:00:40,250 --> 00:00:41,000 So let's continue. 15 00:00:42,690 --> 00:00:48,270 Python is a language, supports some types of operators, and a few of those are. 16 00:00:49,870 --> 00:00:57,970 Arithmetic operators, also known as math operators, comparison operators also known as relational 17 00:00:58,000 --> 00:01:00,910 operators, assignment operators. 18 00:01:02,340 --> 00:01:03,720 Logical operators. 19 00:01:04,770 --> 00:01:08,250 These are the most commonly used operators in Python. 20 00:01:09,360 --> 00:01:12,300 So now let's let's examine all of these one by one. 21 00:01:14,780 --> 00:01:17,540 So we're going to start with arithmetic operators. 22 00:01:18,230 --> 00:01:23,750 So these are actually simple math operators like addition, subtraction, multiplication, division, 23 00:01:24,020 --> 00:01:25,460 exponents, all those. 24 00:01:26,150 --> 00:01:27,860 So let's see them in an example. 25 00:01:29,030 --> 00:01:36,260 If we define two variables named A and B, and the values are nine and 15. 26 00:01:41,270 --> 00:01:44,240 And now we can use math operators one by one. 27 00:01:46,440 --> 00:01:50,010 A plus B, and the result is 24. 28 00:01:50,990 --> 00:01:53,570 B minus a result is six. 29 00:01:55,290 --> 00:01:56,490 A divided by B. 30 00:01:57,240 --> 00:01:59,640 Result is zero point six. 31 00:02:00,210 --> 00:02:06,480 So in this process, we divided the B into the A and Python returns the result. 32 00:02:10,370 --> 00:02:12,250 B, modulo A. 33 00:02:13,100 --> 00:02:14,180 The result is six. 34 00:02:15,170 --> 00:02:20,270 So in this process, we divided B into A and Python returns as the remainder. 35 00:02:20,600 --> 00:02:23,450 This process is called Modulus. 36 00:02:24,140 --> 00:02:25,820 The Exponent two. 37 00:02:28,490 --> 00:02:30,410 The result is 225. 38 00:02:31,070 --> 00:02:34,610 So in this process, we find the second power of 15. 39 00:02:35,030 --> 00:02:38,540 So see, those are the basic math operators in Python. 40 00:02:39,140 --> 00:02:41,570 So now let's continue with comparison operators. 41 00:02:43,080 --> 00:02:49,950 These operators compare the values on either side of them and then decide the relation between them. 42 00:02:50,730 --> 00:02:51,660 But how? 43 00:02:52,820 --> 00:02:53,720 We're going to check it out. 44 00:02:54,080 --> 00:02:58,610 The first we do need to know a little bit about Boolean values in Python. 45 00:03:00,480 --> 00:03:02,430 What are Boolean values? 46 00:03:03,210 --> 00:03:03,540 OK. 47 00:03:03,870 --> 00:03:10,710 There are logical values or more commonly known Boolean values are actually a data type in Python, 48 00:03:10,860 --> 00:03:13,350 and they have two different values. 49 00:03:13,620 --> 00:03:15,390 True and false. 50 00:03:16,320 --> 00:03:16,620 All right. 51 00:03:16,620 --> 00:03:17,610 So how does that work? 52 00:03:18,540 --> 00:03:20,430 Let's look at a couple of examples. 53 00:03:21,380 --> 00:03:25,790 So let's create a variable named AI and let it be true. 54 00:03:30,580 --> 00:03:31,930 And let's look at its type. 55 00:03:32,470 --> 00:03:35,830 So as you can see, the type is class Boole. 56 00:03:36,760 --> 00:03:41,590 Now create another variable named B and let it be false. 57 00:03:46,100 --> 00:03:52,070 So let's look at this one time and also this one's type is Class Boul. 58 00:03:53,390 --> 00:03:57,110 So we will often use these variables when we create a condition. 59 00:03:59,190 --> 00:04:03,840 Now, let's continue with comparison operators and check in on how to use it. 60 00:04:06,320 --> 00:04:09,290 So there are six different comparison operators in Python. 61 00:04:17,250 --> 00:04:18,210 Here's one example. 62 00:04:19,150 --> 00:04:21,760 Let's take our last variables again. 63 00:04:28,400 --> 00:04:30,320 A equals B. 64 00:04:31,010 --> 00:04:32,120 The result is false. 65 00:04:33,750 --> 00:04:40,410 The Eagle operator is checking both values, and if they are equal, then the result would be true. 66 00:04:41,280 --> 00:04:42,540 The result is false. 67 00:04:44,200 --> 00:04:46,630 A, not equal, B. 68 00:04:49,610 --> 00:04:56,610 And the result is true, the not equal operator is checking both values, and if they're not equal, 69 00:04:56,610 --> 00:04:57,740 then the result is true. 70 00:04:58,100 --> 00:05:00,500 Else the result would be false. 71 00:05:02,270 --> 00:05:03,530 A less than B. 72 00:05:09,480 --> 00:05:13,770 The result is true because A is indeed less than B. 73 00:05:15,480 --> 00:05:17,580 A is greater than B. 74 00:05:20,900 --> 00:05:25,100 And the result is false because he is less than B. 75 00:05:26,410 --> 00:05:28,810 A less than equals B. 76 00:05:31,010 --> 00:05:36,780 And the result is true, the less than equal operator is checking both sides. 77 00:05:37,130 --> 00:05:44,180 And if the upper end is less than or equal to the right upper end, then the condition becomes true. 78 00:05:44,360 --> 00:05:46,160 Else, the condition is false. 79 00:05:47,630 --> 00:05:49,640 A greater than equal B. 80 00:05:53,260 --> 00:05:54,400 The result is false. 81 00:05:55,360 --> 00:05:58,750 The greater than equal operator is checking both sides. 82 00:05:59,110 --> 00:06:05,710 If the left operand is greater than or equal to the right operand, then the condition becomes true. 83 00:06:06,070 --> 00:06:07,630 Else the condition is false. 84 00:06:08,530 --> 00:06:11,740 So do you see how the comparison operators work in Python? 85 00:06:12,990 --> 00:06:13,770 Cool. 86 00:06:14,190 --> 00:06:16,290 So let's continue with assignment operators. 87 00:06:18,630 --> 00:06:22,620 Assignment operators are using Python to assign values to variables. 88 00:06:23,280 --> 00:06:30,060 As you may remember, when we define a variable like A equals nine, A is the variable name. 89 00:06:30,390 --> 00:06:34,230 Nine is the variables value and the equals. 90 00:06:34,230 --> 00:06:37,320 Mark is the assignment operator. 91 00:06:38,310 --> 00:06:39,810 And of course, there are many more of them. 92 00:06:40,500 --> 00:06:41,850 I'll give you a few examples. 93 00:06:43,090 --> 00:06:47,170 So we define a variable named S. and its value is one. 94 00:06:48,530 --> 00:06:54,290 So now when we type C plus equals one, the result is two. 95 00:06:56,260 --> 00:07:03,940 Plus, equal mark means that it adds the right operand to the left operand and assigns a result to the 96 00:07:03,940 --> 00:07:04,870 left operand. 97 00:07:06,010 --> 00:07:06,910 Now, what if we type? 98 00:07:07,960 --> 00:07:10,300 C minus equals two. 99 00:07:10,930 --> 00:07:11,950 The result is zero. 100 00:07:13,020 --> 00:07:19,440 The minus equal mark means it adds the right upper end to the left operand and assigns a result to the 101 00:07:19,440 --> 00:07:20,340 left operand. 102 00:07:21,600 --> 00:07:23,100 Now, I think you've already noticed. 103 00:07:23,460 --> 00:07:26,850 We can use these operators with math operators. 104 00:07:26,940 --> 00:07:27,330 Right. 105 00:07:28,080 --> 00:07:34,980 So when we use them with a divide operator and the new key value was assigned the result of the process. 106 00:07:36,210 --> 00:07:39,690 So that's basically the logic of the assignment operators. 107 00:07:40,470 --> 00:07:42,840 Now let's continue with logical operators. 108 00:07:45,460 --> 00:07:48,940 Logical operators are used to combine conditional statements. 109 00:07:49,990 --> 00:07:56,230 So there are three types of logical operators there and or and not. 110 00:07:58,110 --> 00:08:01,020 Now let's look at all three of the operators with a few examples. 111 00:08:02,160 --> 00:08:05,850 So we'll take our A and B variables again and type it. 112 00:08:07,000 --> 00:08:11,140 A equals nine and B equals 15. 113 00:08:19,100 --> 00:08:20,150 And the result is true. 114 00:08:21,300 --> 00:08:22,500 The and operator. 115 00:08:23,420 --> 00:08:28,220 Checks are the result of all the comparison operations is going to be true. 116 00:08:29,550 --> 00:08:33,570 If both the operands are true, then the condition becomes true. 117 00:08:34,580 --> 00:08:37,880 In other cases, the result is false here. 118 00:08:38,480 --> 00:08:42,680 The AAA variable is nine and the B variable is 15. 119 00:08:42,950 --> 00:08:45,120 And as you can see, both situations are true. 120 00:08:45,140 --> 00:08:46,910 So the result is true. 121 00:08:48,750 --> 00:08:53,430 A equals 15 or B equals 15. 122 00:08:59,540 --> 00:09:07,400 And the result is true, the or operator checks to see if at least one of the results of all the comparison 123 00:09:07,400 --> 00:09:08,630 operations is true. 124 00:09:09,590 --> 00:09:18,260 And if any of the two operands are non-zero and then the condition becomes true, in any other case, 125 00:09:18,260 --> 00:09:19,490 the result would be false. 126 00:09:20,980 --> 00:09:26,350 So here the A variable isn't 15, but the big variable is 15. 127 00:09:26,920 --> 00:09:30,640 So one side is true, then the result is true. 128 00:09:33,100 --> 00:09:35,170 Not B equals 15. 129 00:09:37,180 --> 00:09:45,010 So the not operator isn't actually a logical operator, this operator simply converts a logical value 130 00:09:45,010 --> 00:09:47,560 or a comparison to the opposite. 131 00:09:48,310 --> 00:09:56,320 That is, the not operator converts a result that is true to fault and a result that is false to true. 132 00:09:57,190 --> 00:09:59,260 And the big variable is 15. 133 00:09:59,950 --> 00:10:02,200 And as you can see, situations are true. 134 00:10:02,230 --> 00:10:08,740 So the result will become false because it turns true to false. 135 00:10:09,800 --> 00:10:10,320 That's it. 136 00:10:11,130 --> 00:10:16,260 So in this lesson, we learned the operator concept in Python, as well as how to use it. 137 00:10:17,070 --> 00:10:19,710 Also, we examined some of the most common operators. 138 00:10:19,740 --> 00:10:20,610 One by one. 139 00:10:21,840 --> 00:10:27,030 Now, in the next lesson, we're going to learn the conditionals as well as loops in Python. 140 00:10:27,660 --> 00:10:29,100 So I want to see in the next lesson. 141 00:10:29,670 --> 00:10:30,480 Have a nice day.