Specify a Variable Type
There may be times when you want to specify a type on to a variable. This can be done with casting. Python is an object-orientated language, and as such it uses classes to define data types, including its primitive types.
Casting in python is therefore done using constructor functions:
- int[] - constructs an integer number from an integer literal, a float literal [by removing all decimals], or a string literal [providing the string represents a whole number]
- float[] - constructs a float number from an integer literal, a float literal or a string literal [providing the string represents a float or an integer]
- str[] - constructs a string from a wide variety of data types, including strings, integer literals and float literals
Example
Integers:
x = int[1] # x will be 1
y = int[2.8] # y will
be 2
z = int["3"] # z will be 3
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Example
Floats:
x = float[1] # x will be 1.0
y = float[2.8] # y will be 2.8
z = float["3"] # z will be 3.0
w = float["4.2"] # w will be 4.2
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Example
Strings:
x = str["s1"] # x will be 's1'
y = str[2] # y will be '2'
z = str[3.0] # z will be '3.0'
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