0207 FreeCodeCamp Python Certification - Loops and sequences Review
Loops and sequences review
Accessing Elements in a List:
cities = ['Los Angeles', 'London', 'Tokyo']
cities[0] # Los Angeles
Creating Lists Using the list() constructor:
developer = 'Jessica'
print(list(developer))
# Result: ['J', 'e', 's', 's', 'i', 'c', 'a']
List Mutability:
programming_languages = ['Python', 'Java', 'C++', 'Rust']
programming_languages[0] = 'JavaScript'
print(programming_languages) # ['JavaScript', 'Java', 'C++', 'Rust']
append():
numbers = [1, 2, 3, 4, 5]
numbers.append(6)
print(numbers) # [1, 2, 3, 4, 5, 6]
## Appending lists
numbers = [1, 2, 3, 4, 5]
even_numbers = [6, 8, 10]
numbers.append(even_numbers)
print(numbers) # [1, 2, 3, 4, 5, [6, 8, 10]]
extend():
numbers = [1, 2, 3, 4, 5]
even_numbers = [6, 8, 10]
numbers.extend(even_numbers)
print(numbers) # [1, 2, 3, 4, 5, 6, 8, 10]
The range() function: Used to generate a sequence of integers.