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The write performance into text files is substantially slower (5x-8x)
than that of python 2.5. This makes python 3.0 unsuited to any
application that needs to write larger amounts of data.
------------test code follows -----------------------
import time
lo, hi, step = 10**5, 10**6, 10**5
# writes increasingly more lines to a file
for N in range(lo, hi, step):
 fp = open('foodata.txt', 'wt')
 start = time.time()
 for i in range( N ):
 fp.write( '%s\n' % i)
 fp.close()
 stop = time.time()
 print ( "%s\t%s" % (N, stop-start) )