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2904
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The :func:`shutil.copytree` function has two new options:
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2905
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*ignore_dangling_symlinks*: when ``symlinks=False`` (meaning that the function copies the file pointed to by the symlink, not the symlink itself) this option will silence the error thrown if the file doesn't exist.
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2906
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*copy_function*: a callable that will be used to copy files. :func:`shutil.copy2` is used by default.
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2907
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(Contributed by Tarek Ziade.)
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2908
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The *sqlite3* module has some new features:
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Le module *sqlite3* a quelques nouvelles fonctionnalités :
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2909
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2910
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2911
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New :class:`~sqlite3.Connection` attribute :attr:`~sqlite3.Connection.in_transaction` is :const:`True` when there are uncommitted changes, and :const:`False` otherwise. (Contributed by R. David Murray and Shashwat Anand, :issue:`8845`.)
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2912
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2913
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The mechanism for serializing execution of concurrently running Python threads (generally known as the GIL or Global Interpreter Lock) has been rewritten. Among the objectives were more predictable switching intervals and reduced overhead due to lock contention and the number of ensuing system calls. The notion of a "check interval" to allow thread switches has been abandoned and replaced by an absolute duration expressed in seconds. This parameter is tunable through :func:`sys.setswitchinterval()`. It currently defaults to 5 milliseconds.
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