Why import statements are not allowed in function bodies (or any block of code)?

[Leandro Lucarella]

Is there any good reason for not allowing import statements in function
bodies or any code block? I think it would be really useful for avoid
namespace polution, specially in unittests (it's really ugly to import
things a module will never use except for unittesting).

-- 
Leandro Lucarella (luca) | Blog colectivo: http://www.mazziblog.com.ar/blog/
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