{{tag>projects cloud club computing virtualization machines VMs AWS Azure GCP}}


[[python_club|About the Club]]\\

==== Python Club Topics - Lists, Tuples, & Sets ====

==== Lists ====
  - Multiple values under 1 variable name
  - Used to store collections of data
  - Created using square brackets ( eg. [ ] )
  - Values can be duplicated and order changed
  - Create a list<code python>
fruit = ["apples", "bananas", "oranges"]
print(fruit)
</code>
  - Use the **len()** function<code python>
fruit = ["apples", "bananas", "oranges"]
print(len(fruit))
</code>
  - Counting items starts at 0. Get the 2nd item.<code python>
fruit = ["apples", "bananas", "oranges"]
print(fruit[1])
</code>
  - Change a value of an item in the list<code python>
fruit = ["apples", "bananas", "oranges"]
print(fruit)
fruit[2] = "cherries"
print(fruit)
</code>


==== Tuples ====
  - Multiple values under 1 variable name
  - Used to store collections of data
  - Values **CANNOT** be changed
  - Created using parentheses ( eg. ( ) )
  - Values can be duplicated and indexed, but the order **CANNOT** be changed
  - Create a tuple<code python>
fruit = ("apples", "bananas", "oranges")
print(fruit)
</code>
  - You **cannot** change values in a tuple<code python>
fruit = ("apples", "bananas", "oranges")
fruit[2] = "cherries"
print(fruit)
</code>
  - Can have a single value, but must include a comma at the end<code python>
this_tuple = ("apples",)
print(this_tuple)
</code>
  - Use the **len()** function<code python>
tuple = ("apples", "bananas", "oranges")
print(len(tuple))
</code>

==== Sets ====
  - Multiple values under 1 variable name
  - Used to store collections of data
  - Values are **NOT** ordered and **NOT** indexed
  - Values **CANNOT** be duplicated - they will be ignored
  - Created using curley braces ( eg. { } )
  - Create a set<code python>
fruit = {"apples", "bananas", "oranges", "apples"}
print(fruit)
</code>
  - Use the **len()** function<code python>
fruit = {"apples", "bananas", "oranges"}
print(len(fruit))
</code>
  - You ** cannot** change values in a set<code python>
fruit = {"apples", "bananas", "oranges", "apples"}
print(fruit)
fruit[1] = "grapes"
print(fruit)
</code>