Python Native Datatypes -- tuple
>>>t=( " a " ," b " ," mpilgrim " ," z " ," example " )>>>t
( ' a ' ,' b ' ,' mpilgrim ' ,' z ' ,' example ' )
>>>t
' a '
>>>t[− 1 ]
' example '
>>>t[ 1 : 3 ]
( ' b ' ,' mpilgrim ' )
1、tuple没有任何方法
2、tuple和list可以相互转化
4、
Common tuple literals and operations
Operation
Interpretation
( )
An empty tuple
t1 = (0,)
A one-item tuple (not an expression)
t2 = (0, 'Ni', 1.2, 3)
A four-item tuple
t2 = 0, 'Ni', 1.2, 3
Another four-item tuple (same as prior line)
t3 = ('abc', ('def', 'ghi'))
Nested tuples
t1t3t1len(t1)
Index, slice, length
t1 + t2t2 * 3
Concatenate, repeat
for x in t23 in t2
Iteration, members
tuple这些操作和list非常之象。。
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