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Standard Data Types. The data stored in memory can be of many types. For example, a person's age is stored as a numeric value and his or her address is stored as alphanumeric characters. Python has various standard data types that are used to define the operations possible on them and the storage method for each of them. Python has five standard data types â Numbers; String; List; Tuple; Dictionary; Python Numbers. Number data types store numeric values. Number objects are created when you assign a value to them. For example â var1 = 1 var2 = 10
My snippet from Python's math module implementation shows how copybit(x, y) can be used to implement nonnegative(), which a simple sign(x) cannot do. Python should support have better support for IEEE 754/C99 math function. That would add a signbit(x) function, which would do what you want in the case of floats.