Through my experiences over the past while, I've come around to theview that you should try to have code reviews for sysadmin shellscripts. There's two reasons for this, and they both have to do withthe fact that the Bourne shell is not really a programming language .

First, you want code reviews so that other people can convince you thatyour clever Bourne shell idioms are a little too clever. People's tastesand standards for this vary widely, and you're writing scripts not

Suppose that you have the Python try:/finally: problem and need to get around it, specificallyyou need to both be a generator and have your finally: runimmediately. Taken from here ,one answer is:

def foo(bar):  try:    def output():      ... compute with bar ...        yield res      ...    return output()  finally:    print "finalizing"

(Now, there is a lot of things that this doesn't help with; the actualcomputation

Due to another entry I'm in the process of writing, I was suddenlystruck with a question: in Python, when does the code in a generatorfunction start running?

First, the brief version of generators and iterators. To handwavesomewhat, a generator is a function that uses yield to create andreturn its results one at a time. Behind the scenes, such a functionactually returns an iterator object, which the Python interpreter usesto freeze and unfreeze the actual code as the function's code calls