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Getting started with Python

Port Vila, Vanuatu

Hello World​

print('Hello World')

User Input​

user_says = input ('Please enter a string: ')

print(user_says)

user_says is a Python variable that is used to store data, in this case it is assigned the string from the input function. We can then print out the variable to see if it worked.

Variables​

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Data Types​

  • mutable data type
    • lists
    • dictionaries
    • sets
  • immutable data types
    • strings
    • numbers
    • tuples
    • frozensets

Strings​

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Numbers​

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Booleans​

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Lists​

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Set​

Sets = unordered lists of unique items.

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You can create a set from a list to remove duplicates.

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Just as list before sets are mutable - you can add or remove elements at will. To create an immutable set from a list you have to use FrozenSets:

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Tuples​

Tuples are immutable list - elements cannot be added or removed once the tuples was created.

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Tuples allow you to map values to variables by assigning a tuple, made up of variables, to a tuple, made up of values:

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Ranges​

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Dictionaries​

Dictionaries are an unordered list of key-value pairs. Every key has to be unique and should be of an immutable type - strings, numbers or tuples.

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Conversion between Data Types​

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