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Python Data Structures
course content

Course Content

Python Data Structures

Python Data Structures

1. List
Creating a ListNested ListChallenge: Create a ListList IndexingList LengthLists Are MutableAppend() MethodInsert() MethodDeleting ElementsRemoving ElementsList Comprehensions
2. Dictionary
Creating a DictionaryChallenge: Craft the DictionaryExtraction of InformationAdding ItemsDel KeywordPop() MethodPopitem() MethodClear() MethodDictionary Comprehensions
3. Tuple
Creating a Tuple Accessing Elements of a TupleConcatenation of Tuples Delete a Tuple Update a TupleAdding Items Challenge: Concatenate Tuples
4. Set
Creating a SetAdd() MethodUpdate() MethodAccessing the Elements of a SetRemove() and Discard() MethodsClear() Method

bookAppend() Method

Let's create a list named states:


              
12

            
states = ['Texas', 'Florida', 'California', 'New Mexico']
print(states)
copy

The list has four items. Imagine we want to add a fifth state, say Ohio. Here's how we do it:


              
1234

            
states = ['Texas', 'Florida', 'California', 'New Mexico']
states.append('Ohio')
print(states)
print("4:", states[4])
copy

The code above has added Ohio to the end of the list. The list now contains five items. states[4] refers to Ohio.

If we want to add a number instead of a string, we don't use quotation marks. Here's how it's done:

The code above has added the number 10 to the end of the list. The list now includes six items. states[5] refers to 10.

Note

The append() function allows you to add only one item at a time.

Task

You have a list named fruits with these items:

'Raspberry', 'Pomegranate', 'Peach', 'Pear'.

You need to add the following items to the existing list:

'Mango', 'Banana'.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 1. Chapter 7
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bookAppend() Method

Let's create a list named states:


              
12

            
states = ['Texas', 'Florida', 'California', 'New Mexico']
print(states)
copy

The list has four items. Imagine we want to add a fifth state, say Ohio. Here's how we do it:


              
1234

            
states = ['Texas', 'Florida', 'California', 'New Mexico']
states.append('Ohio')
print(states)
print("4:", states[4])
copy

The code above has added Ohio to the end of the list. The list now contains five items. states[4] refers to Ohio.

If we want to add a number instead of a string, we don't use quotation marks. Here's how it's done:

The code above has added the number 10 to the end of the list. The list now includes six items. states[5] refers to 10.

Note

The append() function allows you to add only one item at a time.

Task

You have a list named fruits with these items:

'Raspberry', 'Pomegranate', 'Peach', 'Pear'.

You need to add the following items to the existing list:

'Mango', 'Banana'.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 1. Chapter 7
toggle bottom row

bookAppend() Method

Let's create a list named states:


              
12

            
states = ['Texas', 'Florida', 'California', 'New Mexico']
print(states)
copy

The list has four items. Imagine we want to add a fifth state, say Ohio. Here's how we do it:


              
1234

            
states = ['Texas', 'Florida', 'California', 'New Mexico']
states.append('Ohio')
print(states)
print("4:", states[4])
copy

The code above has added Ohio to the end of the list. The list now contains five items. states[4] refers to Ohio.

If we want to add a number instead of a string, we don't use quotation marks. Here's how it's done:

The code above has added the number 10 to the end of the list. The list now includes six items. states[5] refers to 10.

Note

The append() function allows you to add only one item at a time.

Task

You have a list named fruits with these items:

'Raspberry', 'Pomegranate', 'Peach', 'Pear'.

You need to add the following items to the existing list:

'Mango', 'Banana'.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Let's create a list named states:


              
12

            
states = ['Texas', 'Florida', 'California', 'New Mexico']
print(states)
copy

The list has four items. Imagine we want to add a fifth state, say Ohio. Here's how we do it:


              
1234

            
states = ['Texas', 'Florida', 'California', 'New Mexico']
states.append('Ohio')
print(states)
print("4:", states[4])
copy

The code above has added Ohio to the end of the list. The list now contains five items. states[4] refers to Ohio.

If we want to add a number instead of a string, we don't use quotation marks. Here's how it's done:

The code above has added the number 10 to the end of the list. The list now includes six items. states[5] refers to 10.

Note

The append() function allows you to add only one item at a time.

Task

You have a list named fruits with these items:

'Raspberry', 'Pomegranate', 'Peach', 'Pear'.

You need to add the following items to the existing list:

'Mango', 'Banana'.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 1. Chapter 7
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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