擅长:python、mysql、java
<p><a href="http://docs.python.org/library/string.html#string.ljust" rel="nofollow">String ljust, rjust, center</a>是填充这样的字符串所需要的。你知道吗</p>
<pre><code>def justified(title, amount, titlewidth=20, amountwidth=10):
return title.ljust(titlewidth) + " = $ " + ('%.2f' % amount).rjust(amountwidth)
print(justified('Parts', 12.45))
print(justified('Labor', 100))
print(justified('Tax', 2.5))
print(justified('Total', 114.95))
</code></pre>