Introduction to Python

1. First Acquaintance

In this section, you'll dive into the basics of Python, familiarize yourself with your workspace, tackle simple math operations, and display your results.

The Very First Steps

Comments

Some Simple Math

More Challenging Math

Challenge

Bringing It All Together

2. Variables and Types

Here, you'll learn how to store items like numbers and text in computer memory, recalling them by name. You'll also get a taste of text manipulation in Python.

Negative Indexing and Length

String Slicing

Challenge

Concatenation

3. Conditional Statements

Here, you'll delve into the boolean data type and discover its role in creating programs that respond to specific conditions.

Boolean Data Type

Challenge: Comparison Operators

Combining Conditions

Challenge: Logical Operators

Membership Operators and Types Comparison

Simple if/else Expressions

Challenge: Grocery Store

Challenge: Odd and Even

if/elif/else Expressions

Challenge: Grocery Store Extended

Challenge: Positive, Negative or Zero

4. Other Data Types

Continuing with data types, this section will teach you how to group varied attributes within a single variable using lists, tuples, and the dictionaries.

What Is a Dictionary?

Challenge

Dictionary Methods

Challenge

5. Loops

In this part, you'll master the art of writing loops in Python – essential constructs for iterating over lists, tuples, dictionaries, and even future dataframes.

Iterating Over Indexes

Nested Loops

6. Functions

To wrap up our introductory course, you'll explore some built-in functions and then embark on creating your very own!

Built-in Functions

Challenge

Defining Your First Function

Challenge

if/else Statements in Functions

Challenge

Functions With No Return

Naming Rules

As we discussed in the last chapter, variables are essential for holding values that we'll use later on. When naming variables in Python, there are some rules and best practices to keep in mind:

Variable names can include letters, numbers, or underscores:
- myVariable1;
- number_2;
- data_frame3;
- Python4Life;
- _underscoreVar.
Variable names can't start with a number:
- variable1 (Correct);
- 1variable (Incorrect - starts with a number).
Variable names are case-sensitive:
- MyVariable and myvariable are different variables;
- Data and data are different variables;
- Number1 and number1 are different variables.
Apart from the underscore _, special characters aren't allowed:
- my_variable (Correct);
- my-variable (Incorrect - contains a hyphen);
- variable@name (Incorrect - contains an @);
- data*star (Incorrect - contains an asterisk *).
Reserved words in Python can't be used as variable names:
- forLoop (Correct - not a reserved word);
- ifCondition (Correct - not a reserved word);
- for (Incorrect - for is a reserved word);
- while (Incorrect - while is a reserved word);
- try (Incorrect - try is a reserved word).

Which of these would be valid variable names in Python?

Виберіть кілька правильних відповідей

Note
If you're uncertain about why a particular variable name is considered correct or incorrect, you can refer back to the above rules and examples for clarification.

Все було зрозуміло?

Секція 2. Розділ 2

Зміст курсу

Introduction to Python

1. First Acquaintance

The Very First Steps Comments Some Simple Math More Challenging Math Challenge Bringing It All Together

2. Variables and Types

Storing Numbers Naming Rules Using Variables Data Types Numbers Challenge Storing Text String Indexing Negative Indexing and Length String Slicing Challenge Concatenation

3. Conditional Statements

Boolean Data Type Challenge: Comparison Operators Combining Conditions Challenge: Logical Operators Membership Operators and Types Comparison Simple if/else Expressions Challenge: Grocery Store Challenge: Odd and Even if/elif/else Expressions Challenge: Grocery Store Extended Challenge: Positive, Negative or Zero

4. Other Data Types

What Is a List?List Methods Challenge Nested Lists Challenge What Is a Tuple?Tuple Methods Challenge Nested Tuples Challenge What Is a Dictionary?Challenge Dictionary Methods Challenge

5. Loops

while Loop Challenge for Loop Challenge Range Challenge Iterating Over Indexes Nested Loops

6. Functions

Built-in Functions Challenge Defining Your First Function Challenge if/else Statements in Functions Challenge Functions With No Return Challenge Modifying Functions Challenge Lambda Functions Challenge

Introduction to Python

Naming Rules

As we discussed in the last chapter, variables are essential for holding values that we'll use later on. When naming variables in Python, there are some rules and best practices to keep in mind:

Variable names can include letters, numbers, or underscores:
- myVariable1;
- number_2;
- data_frame3;
- Python4Life;
- _underscoreVar.
Variable names can't start with a number:
- variable1 (Correct);
- 1variable (Incorrect - starts with a number).
Variable names are case-sensitive:
- MyVariable and myvariable are different variables;
- Data and data are different variables;
- Number1 and number1 are different variables.
Apart from the underscore _, special characters aren't allowed:
- my_variable (Correct);
- my-variable (Incorrect - contains a hyphen);
- variable@name (Incorrect - contains an @);
- data*star (Incorrect - contains an asterisk *).
Reserved words in Python can't be used as variable names:
- forLoop (Correct - not a reserved word);
- ifCondition (Correct - not a reserved word);
- for (Incorrect - for is a reserved word);
- while (Incorrect - while is a reserved word);
- try (Incorrect - try is a reserved word).

Which of these would be valid variable names in Python?

Виберіть кілька правильних відповідей

Note
If you're uncertain about why a particular variable name is considered correct or incorrect, you can refer back to the above rules and examples for clarification.

Все було зрозуміло?

Секція 2. Розділ 2