Unloads one module, and loads a second module.
     
    
    
    Arguments
    - from
 
A character scalar: the module to unload
 
- to
 
A character scalar: the module to load
 
 
    
    Value
    
An invisible value whose value may be changed in the future.
     
    
    Examples
    module_swap("python/2", "python/3")