Create a range of values from option string.
The valid formats of the string are
- A single value.
- A comma-separated list of values
- The form <first>:<step>:<last>
The function create an array containing the values, and also generate the range in the last case.
Thus the value of the option should be on the form:
<option> = <value>
<option> = <value>, <value>, <value>, ..., <value>
<option> = <number>:<number>:<number>
Parameters : | section :str :
option : str
default : special, optional
add_if_not_existing : bool, optional
dtype : special, optional
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Returns : | rangeArray : numpy.array
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