Modifying Functions

Let's revisit the example with the country information. What happens if the name parameter isn't found in the data?

Can we manage this problem? Absolutely, by implementing conditional statements!

Note
d.keys() is a method used with dictionaries that produces a list of all keys in the dictionary d. Here, it's utilized to verify whether the name is present in the dictionary's keys.

As demonstrated, the error message in this updated format is more user-friendly. While there are many other potential errors and methods to handle them, they're outside the purview of this course.

Everything was clear?

Section 6. Chapter 9

Course Content

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