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Avnish
Avnish

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Python Lists

Here are 8 examples of Python lists along with detailed explanations of each code snippet:

Example 1: Creating an empty Python list 

my_list = []
print(my_list)
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Explanation:

  • We create an empty list named my_list using square brackets [].
  • We then print the list, which will output an empty list [].

Output:

[]
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Example 2: Creating a list with elements 

fruits = ["apple", "banana", "orange", "grape"]
print(fruits)
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Explanation:

  • We create a list named fruits containing four string elements: "apple", "banana", "orange", and "grape".
  • We print the list.

Output:

['apple', 'banana', 'orange', 'grape']
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Example 3: Accessing elements of a list 

fruits = ["apple", "banana", "orange", "grape"]
print(fruits[0])
print(fruits[2])
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Explanation:

  • We access individual elements of the fruits list using their indices. Remember, indexing in Python starts from 0.
  • fruits[0] will print the first element, "apple".
  • fruits[2] will print the third element, "orange".

Output:

apple
orange
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Example 4: Modifying elements of a list 

fruits = ["apple", "banana", "orange", "grape"]
fruits[1] = "kiwi"
print(fruits)
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Explanation:

  • We modify the second element of the fruits list by assigning a new value to fruits[1].
  • After modification, the list will contain "kiwi" instead of "banana".

Output:

['apple', 'kiwi', 'orange', 'grape']
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Example 5: Appending elements to a list 

fruits = ["apple", "banana", "orange", "grape"]
fruits.append("mango")
print(fruits)
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Explanation:

  • We use the append() method to add a new element, "mango", to the end of the fruits list.
  • The append() method modifies the list in place.

Output:

['apple', 'banana', 'orange', 'grape', 'mango']
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Example 6: Removing elements from a list 

fruits = ["apple", "banana", "orange", "grape"]
removed_fruit = fruits.pop(1)
print(fruits)
print("Removed:", removed_fruit)
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Explanation:

  • We use the pop() method to remove an element from the fruits list at index 1 (i.e., the second element, "banana").
  • The pop() method returns the removed element, which we store in the variable removed_fruit.
  • We print the modified fruits list and the removed element.

Output:

['apple', 'orange', 'grape']
Removed: banana
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Example 7: Slicing a list 

numbers = [1, 2, 3, 4, 5]
print(numbers[1:4])
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Explanation:

  • We use slicing to create a sublist of numbers containing elements from index 1 up to, but not including, index 4.
  • The slice numbers[1:4] will include elements at indices 1, 2, and 3.

Output:

[2, 3, 4]
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Example 8: Concatenating lists 

list1 = [1, 2, 3]
list2 = [4, 5, 6]
combined_list = list1 + list2
print(combined_list)
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Explanation:

  • We concatenate two lists, list1 and list2, using the + operator.
  • The resulting combined_list contains elements from both list1 and list2.

Output:

[1, 2, 3, 4, 5, 6]
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These examples demonstrate various operations that can be performed on Python lists, including creation, modification, access, addition, removal, slicing, and concatenation.

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