Generate a set of characters from a string
This Python code processes a string, string, and creates a set, chars, containing unique alphabetical characters (letters) from the string. Here's how the code works:
- string = "Hello, world!": This line initializes a variable named string and assigns it the string "Hello, world!"
- chars = {char for char in string if char.isalpha()}: This line initializes a variable named chars and assigns it a set created using a set comprehension. It iterates over each character char in the string and adds it to the set if it is an alphabetical character (a letter).
- {...}: This notation is used to create a set.
- char for char in string: This part of the comprehension iterates over each character in the string.
- if char.isalpha(): This conditional check ensures that only alphabetical characters (letters) are included in the set. It uses the isalpha() method to determine if a character is a letter.
- print(string): This line of code prints the original string to the console.
- print(chars): This line of code prints the chars set to the console.
Source Code
string = "Hello, world!"
chars = {char for char in string if char.isalpha()}
print(string)
print(chars)
Output
Hello, world!
{'e', 'r', 'o', 'H', 'w', 'l', 'd'}