arrays.py

# Get the value of the first array item.
cars = ["Ford", "Volvo", "BMW"]
x = cars[1]
print(x)

# Modify the value of the first array item.
cars = ["Ford", "Volvo", "BMW"]
cars[0] = "Toyota"

# The length of an array can be found with the len() function.
cars = ["Ford", "Volvo", "BMW"]
x = len(cars)
print(x)

# Looping through an array.
cars = ["Ford", "Volvo", "BMW"]
for x in cars:
    print(x)

# Adding an array item using the append() method.
cars = ["Ford", "Volvo", "BMW"]
cars.append("Honda")
print(cars)

# Removing an array item using the remove() method.
cars = ["Ford", "Volvo", "BMW"]
cars.remove("Volvo")
print(cars)

# Removing an array item using the pop() method.
cars = ["Ford", "Volvo", "BMW"]
cars.pop(1)
print(cars)

# Array methods()
# append()	-	Adds an element at the end of the list
fruits = ['apple', 'banana', 'cherry']
fruits.append('orange')
print(fruits)

# Add list to the list
fruits = ['apple', 'banana', 'cherry']
more_fruits = ['orange', 'mango', 'grapes']
fruits.extend(more_fruits)
print(fruits)

# clear()	-	Removes all the elements from the list
fruits = ['apple', 'banana', 'cherry']
fruits.clear()
print(fruits)

# copy()	-	Returns a copy of the list
fruits = ['apple', 'banana', 'cherry']
x = fruits.copy()
print(x)

# count()	-	Returns the number of elements with the specified value
fruits = ['apple', 'banana', 'cherry', 'apple'] 
x = fruits.count('apple')
print(x)

# Return the number of times the value 9 appears in the list.
points= [1,4,2,9,7,8,9,3,1]
x = points.count(9)
print(x)

# extend()	-	Add the elements of a list (or any iterable), to the end of the current list
fruits = ['apple', 'banana', 'cherry']
cars = ['Ford', 'Volvo', 'BMW']
fruits.extend(cars)
print(fruits)

# Add a tuple to the fruits list.
fruits = ['apple', 'banana', 'cherry']
points = (1, 4, 5, 9)
fruits.extend(points)
print(fruits)

# index()	-	Returns the index of the first element with the specified value
fruits = ['apple', 'banana', 'cherry']
x = fruits.index('cherry')
print(x)

# What is the position of the value 32.
points = [4,55,64,32,16,32]
x = points.index(32)
print(x)

# Find the position of 'cherry', but start the search at position 4.
fruits = ['apple', 'banana', 'cherry', 'orange', 'kiwi', 'melon', 'mango','cherry']
x = fruits.index('cherry', 4)
print(x)