Conteúdo do Curso

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

String Slicing

Great, now you've grasped how to pull out a single character from a string. But what if you want to grab several consecutive characters? Sure, you can pick them out individually, but that seems a tad tedious, doesn't it?

It sure does. To retrieve multiple characters in one go, you can use a technique called slicing. For this, employ square brackets and denote the beginning and end indices with a colon : in between. It's crucial to note that the end index isn't included. So, when you use [1:5], you're selecting characters at indices 1 through 4. Check out the example below.

As you'll notice, the end position is always one more than the last character's index you want to include. In the above example, there are 10 positions, but the final index is 9.

Note
Don't forget that spaces count as characters and have their own indices. Refer to the example below for clarity.

Task

Given the string "Python" saved in the language variable, your task is to extract the substrings "tho" and "on". To help, the indices for this string are outlined below.

Note
Keep in mind that slicing does not include the final index. Therefore, when you use language[2:5], it includes the elements at indices 2, 3, and 4, but excludes the element at index 5.

Tudo estava claro?

Seção 2. Capítulo 10

Conteúdo do Curso

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

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

Introduction to Python

String Slicing

As you'll notice, the end position is always one more than the last character's index you want to include. In the above example, there are 10 positions, but the final index is 9.

Note
Don't forget that spaces count as characters and have their own indices. Refer to the example below for clarity.

Task

Given the string "Python" saved in the language variable, your task is to extract the substrings "tho" and "on". To help, the indices for this string are outlined below.

Note
Keep in mind that slicing does not include the final index. Therefore, when you use language[2:5], it includes the elements at indices 2, 3, and 4, but excludes the element at index 5.

Tudo estava claro?

Seção 2. Capítulo 10

Introduction to Python

String Slicing

Fill in the blanks to complete the task.

Introduction to Python

String Slicing

Fill in the blanks to complete the task.