Python - Lesson 6 - Strings

What is string concatenation?

• Combining two strings to create a new one

• Multiplying two strings

• Finding the length of a string

• Dividing a string into multiple parts

Answer explanation

String concatenation is the process of combining two strings to create a new one.

What is string replication?

• Counting the number of characters in a string

• Finding the middle character of a string

• Reversing a string

• Repeating the same string multiple times

Answer explanation

String replication refers to repeating the same string multiple times, creating a new string with the original string repeated in a sequence.

What are string formatting codes used for?

• Formatting text, integers, and floating point numbers

• Converting strings to numbers

• Counting the number of words in a string

• Removing spaces from strings

Answer explanation

String formatting codes are used for formatting text, integers, and floating point numbers, allowing for precise control over how data is displayed.

What do the ord and chr commands do in Python?

• Find the maximum and minimum values in a string

• Convert between characters and ASCII values

• Reverse a string

• Calculate the length of a string

Answer explanation

The ord command converts a character to its ASCII value, while the chr command converts an ASCII value to its corresponding character.

What is the purpose of string construction?

• To deconstruct strings into individual characters

• To find the middle character of a string

• To count the number of characters in a string

• To create strings from multiple pieces of data

Answer explanation

The purpose of string construction is to create strings from multiple pieces of data.

What is the main use of the str command in Python?

• Find the length of a string

• Convert any object into a string

• Convert strings into numbers

• Reverse a string

Answer explanation

The main use of the str command in Python is to convert any object into a string, making it a versatile tool for string representation of various data types.

What are ASCII and Unicode used for in computing?

• Counting the number of characters in a string

• Sorting data alphabetically

• Representing data values uniquely

• Converting numbers to strings

Answer explanation

ASCII and Unicode are used in computing to represent data values uniquely, allowing for the encoding and decoding of characters across different systems and languages.

What is the purpose of the split() method in Python?

• To combine multiple strings into one

• To split a string into a list based on a delimiter

• To find the index of a substring within a string

• To reverse the characters in a string

Answer explanation

The split() method in Python is used to split a string into a list based on a delimiter. It does not combine strings, find indexes, or reverse characters.

How does the lower() method differ from the upper() method in Python?

• lower() converts all characters to lowercase, while upper() converts all characters to uppercase

• lower() converts all characters to uppercase, while upper() converts all characters to lowercase

• lower() removes all whitespace, while upper() adds whitespace

• lower() reverses the string, while upper() does not change the string

Answer explanation

lower() converts all characters to lowercase, while upper() converts all characters to uppercase