mirror of https://github.com/python/cpython
parent
4baf480088
commit
9c1c52b777
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@ -95,7 +95,7 @@ placeholders unchanged if data is missing::
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>>> d = dict(item='unladen swallow')
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>>> t.substitute(d)
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Traceback (most recent call last):
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. . .
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...
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KeyError: 'owner'
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>>> t.safe_substitute(d)
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'Return the unladen swallow to $owner.'
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@ -218,7 +218,9 @@ At its simplest, log messages are sent to a file or to ``sys.stderr``::
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logging.error('Error occurred')
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logging.critical('Critical error -- shutting down')
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This produces the following output::
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This produces the following output:
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.. code-block:: none
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WARNING:root:Warning:config file server.conf not found
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ERROR:root:Error occurred
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@ -309,6 +311,8 @@ tree searches::
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>>> print "Handling", d.popleft()
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Handling task1
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::
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unsearched = deque([starting_node])
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def breadth_first_search(unsearched):
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node = unsearched.popleft()
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