Anonymous user
Flow-control structures: Difference between revisions
→Case 8 - continue: added "with" statement and "yield" expressions
(→Case 7 - Creating your own custom exceptions, raise: shorten version) |
(→Case 8 - continue: added "with" statement and "yield" expressions) |
||
Line 462:
main()
</pre>
===The "with" statement===
'''Interpreter:''' [[Python]] 2.6
[[Category:Python]]
See [[http://www.python.org/peps/pep-0343.html PEP 0343, The "with" statement]]
>>> with open("some_file"): # file ``some_file`` is closed after ``with`` block in any case whether an exception is raised or not
... raise Exception("an error")
===Yield expressions===
'''Interpreter:''' [[Python]] 2.5
[[Category:Python]]
See [[http://www.python.org/peps/pep-0342.html PEP 0342, Coroutines via Enhanced Generators]]
>>> value = 1
>>> echo = lambda: (yield value)
>>> for i in echo():
... print i
...
1
=={{header|Tcl}}==
| |||