Python特殊场景

原文链接： Python特殊场景

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数组插入

A = ['aa','bb','cc']
A.insert(0,'dd')
A.insert(3,'ee')
print A

B = [['aa','bb']]
B.insert(0,['aa','bb'])
print B

一维数组转二维

A = [u'123', u'abc']
B = [ [A[i]] for i in range(len(A))]
print B

三目

a,b = 1,2
print a if a > b else b
print (a > b and [a] or [b])[0]