python tips

看别人代码的时候，总是会发现很多好玩儿的用法或者不太注意的库，比较零散，就记录在这儿吧。持续更新......

1、用 ...and ... or ... 来替换 if....else...

old:

if flag:
print 'yes'
else:
print 'no'

new:

print flag and 'yes' or 'no'

2、经常被字符串里面很多的%s搞糊涂？还不快试一下Template

old:

message = '%s is better than %s,and %s is worse than %s.so,%s is better than %s'
print message %('a','b','c','b','a','c')

new:

from string import Template
message = Template( '$a is better than $b,and $c is worse than $b.so,$a is better than $c')
print message.substitute(a='a',b='b',c='c')