Python 2.7中更漂亮的输出

Prettier output in Python 2.7

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Possible Duplicate:
Python format tabular output

如何将以下代码(python 2.7)的输出放到表中？

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with open('blacklists.bls', 'r') as f:
L = [dnsbls.strip() for dnsbls in f]
t10 = time.time()
for listofdnsbls in L:
try:
t0 = time.time()
result = socket.gethostbyname("%s.%s" % (ip_reversed(iinput), listofdnsbls))
t1 = time.time()
total = t1-t0
print"%s\t%s\t%s sec" % (listofdnsbls, result, total)
except (socket.gaierror):
t2 = time.time()
error_total = t2-t0
print"%s\tNo result\t%s sec" % (listofdnsbls, error_total)
t20 = time.time()
totaltotal =t20-t10
print"
Completed in: %s sec" % (totaltotal)

目前的输出不太整齐：

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rbl.ntvinet.net 77.95.250.11 0.00194096565247 sec
postfix.bondedsender.org No result 0.329633951187 sec
procmail.bondedsender.org No result 6.34444999695 sec

我希望它更像这样：

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rbl.ntvinet.net 77.95.250.11 0.00194096565247 sec
postfix.bondedsender.org No result 0.329633951187 sec
procmail.bondedsender.org No result 6.34444999695 sec

我找到了一些解释如何使用%1d和%2d的文档，但我无法使其生效，因为它们不是数字而是字符串。