Eagle Eye Networks Inc :: Python screening sample - String handling optimization

pyscreen_sample_1.py

"""
::Eagle Eye Networks Inc.::: 
::Python screening::

The following script is purposley written poorly.

Improve upon the code and explain your improvements.
The id_csv method must return a unicode string of
representation of a comma separated list of uuid's
"""
import uuid
import string
import cProfile

def id_csv(limit):
    """Generates a comma separated list of uuid's"""
    id_list = u""
    while limit:
        limit -= 1
        id_list += str(uuid.uuid4())
        if limit:
            id_list += ", "
    return id_list

if __name__ == "__main__":
    print id_csv(10)
    cProfile.run("id_csv(10000)")

Output from above code.

         70003 function calls in 0.585 seconds

   Ordered by: standard name

   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
        1    0.000    0.000    0.585    0.585 <string>:1(<module>)
        1    0.426    0.426    0.585    0.585 sample_1.py:13(id_csv)

Re-written output:

         80004 function calls in 0.162 seconds

   Ordered by: standard name

   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
        1    0.000    0.000    0.162    0.162 <string>:1(<module>)
        1    0.011    0.011    0.162    0.162 sample_1.py:24(id_csv_fast)

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