[Tutor] file enigma

[spir]

Hello,

text = file(filename).read()

(or: open(filename).read())

How do you close() the file? ;-)
Is it, in fact, automagically closed after end-of-statement if not bound to a name? Or when the execution path quits the present scope (func, module), like if it had been bound to a local var? Or what else?
Said differently: in this case, how long does the python file object live / does the file in file system remain locked?

I would love case #1.

This may be implementation-dependant, no?

Denis
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la vita e estrany