Course Content
Introduction to Python(ihor)
Introduction to Python(ihor)
2. Variables and Types in Python
How to Store Numbers in PythonPython Naming Rules for VariablesHow to Work with Variables in PythonData Types in PythonChallenge: Converting Kilometers to MilesStore Text with Strings in PythonString Indexing in PythonString Slicing in PythonChallenge: Retrieving Letters from StringString Concatenation in Python
3. Conditional Statements in Python
Boolean Data Type in PythonChallenge: Working with Comparison OperatorsHow to Combine Conditions in PythonChallenge: Working with Logical OperatorsMembership Operators and Type Comparisons in PythonHow to Use if/else Expressions in PythonChallenge: Running a Grocery StoreChallenge: Creating Odd and Even Logicif/elif/else ExpressionsChallenge: Running Grocery Store ExtendedChallenge: Weather Adviser
4. Other Data Types in Python
Python ListsCommon List Methods in PythonChallenge: Updating ListNested Lists in PythonChallenge: Retrieving Information from Nested ListPython TuplesCommon Tuple Methods in PythonChallenge: Updating TupleNested Tuples in PythonChallenge: Retrieving Information from Nested TuplePython DictionariesChallenge: Creating DictionaryCommon Dictionary Methods in PythonChallenge: Updating Dictionary
6. Functions in Python
Built-in Functions in PythonChallenge: Converting HeightsHow to Create Functions in PythonChallenge: Writing First FunctionUse of if/else Statements in Python FunctionsChallenge: Identifying Positive Values Functions Without Return in PythonChallenge: Creating Logging FunctionModifying Functions in PythonChallenge: Updating Logic of the FunctionLambda Functions in PythonChallenge: Creating Lambda Function
How to Combine Conditions in Python
In Boolean logic, or and and are fundamental operators. The or operator returns True if at least one condition is true, while the and operator returns True only if all conditions are true. Use lowercase and and or to combine conditions effectively.
# Check if a person has a valid membership and a reservation has_membership = True has_reservation = False # Both conditions must be true for access (AND) print(has_membership and has_reservation) # At least one condition must be true for access (OR) print(has_membership or has_reservation)
You can combine multiple conditions using these operators. When combining complex expressions, use parentheses to clearly define the order of operations. This ensures that your logic is evaluated correctly and avoids unexpected results.
# Check if a person has a valid membership, a reservation, or VIP status has_membership = True has_reservation = False is_vip = True # Chained condition with parentheses to change precedence print(has_membership and (has_reservation or is_vip))
The not operator is used to invert a boolean value. It changes True to False and False to True. This is useful when you need to negate a condition or check the opposite of a given value.
# Check if something is available available = True # The availability status print(available) # Use the 'not' operator to invert the availability status print(not available)
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Section 3. Chapter 3
