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Python - listing out the contents of all variables

You can often guess which course I'm giving by the topic of the my daily writing ....

"How do I list out the contents of all variables with names starting v-a-r ... a question from yesterday.

The immediate answer:

# print all variables starting with "var"

sum = 9
var3 = 78
var6 = 99
varsity = 56
variable = "hello"

for name in dir():
 if name.startswith("var"):
  exec("print "+name)

A more thoughtful answer would be to suggest that you might have used a dictionary to store all this information, then you could simply use the keys method ....
(written 2006-10-21 07:40:02)

 
Associated topics are indexed under
Y115 - Additional Python Facilities
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  [2407] Testing code in Python - doctest, unittest and others - (2009-09-16)
  [1876] Python Regular Expressions - (2008-11-08)
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  [1149] Turning objects into something you can store - Pickling (Python) - (2007-04-15)
  [1136] Buffering output - why it is done and issues raised in Tcl, Perl, Python and PHP - (2007-04-06)
  [1043] Sending an email from Python - (2007-01-18)
  [753] Python 3000 - the next generation - (2006-06-09)
  [672] Keeping your regular expressions simple - (2006-04-05)
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  [463] Splitting the difference - (2005-10-13)
  [239] What and why for the epoch - (2005-03-08)
  [208] Examples - Gadfly, NI Number, and Tcl to C interface - (2005-02-10)
  [183] The elegance of Python - (2005-01-19)


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