Added 06-boolean-comparison-logical.md

basnetsoyuj · basnetsoyuj · commit 7d6447926863 · 2020-09-03T10:58:39.000+05:45
diff --git a/05-operators.md b/05-operators.md
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 # Python Operators
 
-**Video link:**
+**Video link:** [https://youtu.be/xTmEqNRr9T4](https://youtu.be/xTmEqNRr9T4)
 
 In this video, we learned about Python operators.
 
diff --git a/06-boolean-comparison-logical.md b/06-boolean-comparison-logical.md
@@ -0,0 +1,178 @@
+# Python Booleans, Comparison and Logical Operators
+
+**Video link:**
+
+In this video, we learned about the boolean data type as well as comparison and logical operators in Python.
+
+**Programs in the Video**
+
+- [Boolean Data Type](#boolean-data-type)
+- [Comparison Operators](#comparison-operators)
+- [Logical Operators](#logical-operators)
+- [**Task**: Guess the Output](#programming-task)
+
+---
+
+## Boolean Data Type
+Boolean is a logical data type that represents one of two values: either `True` or `False`.
+
+```python
+result1 = True
+result2 = False
+
+print(result1) # True
+print(result2) # False
+```
+
+---
+
+## Comparison Operators
+Python has a set of comparison operators that allow us to compare two values. If the comparison is right, we get `True` and if the comparison is wrong, we get `False`.
+
+```python
+number = 5
+print(number < 10) # True
+
+number = 15
+print(number < 10) # False
+
+```
+
+Here's a list of comparison operators:
+
+```
+Comparison Operators:
+
+<          Less than
+>          Greater than
+==         Equal   
+!=         Not equal
+>=         Greater than or equal to
+<=         Less than or equal to
+```
+
+## Examples: Comparison Operators
+
+```python
+# comparison operators in action
+
+number = 15
+print(number > 10) # True
+
+number = 10
+print(number > 10) # False
+
+number = 10
+# equal to
+print(number == 10) # True
+
+number = 10.0
+# comparing float and integer
+print(number == 10) # True
+
+number = '10'
+# comparing string and integer
+print(number == 10) # False
+
+number = '10'
+# not equal to
+print(number != 10) # True
+
+number = 10
+# less than or equal to
+print(number <= 10) # True
+
+number = 10
+# greater than or equal to
+print(number >= 10) # True
+```
+
+---
+
+
+## Logical Operators
+Python also has three logical operators that operate on the boolean values. Here's a list of the logical operators:
+
+```
+Logical Operators
+
+and         True if both operands are True
+or          True if either of the operands is True
+not         True if the operand is False
+```
+
+---
+
+### `and` Operator
+
+If both of the expressions are true, then the result should be true.
+
+```python
+age = 22
+gpa = 3.8
+
+result = age >= 18 and gpa > 3.6
+print(result) # True
+```
+
+However, if either of these expressions is false,
+
+```python
+age = 22
+gpa = 3.8
+
+print(age >= 18 and gpa > 3.9) # false
+```
+
+---
+
+### `or` Operator
+If either of the expression is true, then the result should be true.
+```python
+age = 22
+gpa = 3.8
+
+print(age >= 18 or gpa > 3.9)
+```
+
+---
+
+### `not` Operator
+The not operator gives the complement of the result:
+
+* If `True`, result is `False`.
+* If `False`, result is `True`.
+
+```python
+result = True
+print(result) # True
+
+result = True
+print(not result) # False
+```
+---
+
+## Programming Task
+
+**Can you guess the output of this program?**
+
+
+```python
+language = "Python"
+print("1.", language == "python")
+
+age = 18
+print("2.", age >= 18)
+print("3.", age > 18)
+
+print("4.", age >= 18 and language == "Java")
+```
+
+**Output**
+
+```
+1. False
+2. True
+3. False
+4. False
+```
