[Tutor] question about listing variables defined since session started
ramit.prasad at jpmorgan.com
Tue May 1 15:59:20 CEST 2012
> Steven D'Aprano wrote:
> Robert Sjoblom wrote:
> > On 30 April 2012 23:25, Comer Duncan <comer.duncan at gmail.com> wrote:
> >> Hi,
> >> I have a newbie type question. Say I have started a python (or
> >> ipython) session and have done some imports and have also defined some
> >> new variables since the session started. So, I have in my current
> >> namespace a bunch of things. Suppose I want to list just those
> >> variable names which have been defined since the session started but
> >> not include the names of the objects that who and whos will return.
> >> How to do that?
> > Not entirely sure, but something like this might work (untested):
> > for name in dir():
> > myvalue = eval(name)
> > print name, "is", type(name), "and is equal to ", myvalue
> Please do not use eval unless you know what you are doing, and certainly
> encourage newbies to use it without a word about the risks.
ast.literal_eval(name) is probably safer.
Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology
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