Python Native Datatypes -- tuple

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>>>  t  =  ( " a " ,  " b " ,  " mpilgrim " ,  " z " ,  " example " )
>>>  t
( ' a ' ,  ' b ' ,  ' mpilgrim ' ,  ' z ' ,  ' example ' )
>>>  t[0]
' 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





t1t3[j]t1[i:j]len(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。。