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[[python_club|About the Club]]\\

==== Python Club Topics - Data types ====

==== Questions ====
  - What a data type?

==== Data Types ====
  - string: Set of characters with letters, numbers, or symbols ( eg. numbers or numb3rs or numb3rs! )
  - integer: Numbers __without__ a decimal point ( eg. 39 )
  - float: Numbers __with__ a decimal ( eg. 3.9 )
  - list: Set of multiple values in a single variable name ( eg. school_subjects = [ 0, "Math", 1, "Science", 2, "P.E.", 3, "Social Studies" ] )
    - Also known as an "array"
  - tuple: Set of multiple values that cannot be changed ( eg. ( 0, "Math", 1, "Science", 2, "P.E" ) )
  - sequence: An __ordered__ collection of items, capable of being accessed by index. Common sequence types in Python include lists, tuples, and strings.
  - set: An __unordered__ collection of unique elements. It is similar to a list or tuple, but it does not allow duplicate values. Sets are useful for tasks such as removing duplicates from a sequence, testing for membership, and performing mathematical set operations like union, intersection, and difference.
  - boolean: Can only have __1__ value of **True** or **False** ( eg. favorite_color = True )


==== String ====
  A string veriable is one that contains letters and numbers as characters, like words in a sentence.

  - Use the **type()** function to find the current type of a variable<code python>
x = "Hello world!"
print(type(x))
</code>
  - You can also get the ***length*** of the string by using the **len()** function<code python>
x = "Hello world!"
print(len(x))
</code>


==== Integer ====
  - Use the **type()** function to find the current type of a variable<code python>
x = 5
print(type(x))
</code>


==== Float ====
  - Use the **type()** function to find the current type of a variable<code python>
x = 21.3
print(x)
print(int(x))
</code>

==== Boolean ====
  - Booleans store the value of **True** or **False**
    - Expressions are evaluated to one of these values<code python>
print(10 > 9)
print(10 == 9)
print(10 < 9)
</code>
    - All values are True except for the following conditions. 
      - Empty string
      - Empty list ( We'll cover lists in the next section )
      - Number 0
      - Explicitly setting a value of False
      - Expressions that evalute to False