Python學習第二篇之tuple

標籤：元組的使用

一、元組的值不能被修改

#!/usr/bin/pythontup =("a","b","c");tup[1]=7

執行後出現如下錯誤：

Traceback (most recent call last):
  File "C:\Program Files\Sublime Text 3\time.py", line 4, in <module>
    tup[1]=7
TypeError: ‘tuple‘ object does not support item assignment

二、元組的元素不能單個刪除，只能全部刪除

#!/usr/bin/pythontup =("a","b","c");del tupprint "After deleting tuple:\n"print tup

執行結果：
After deleting tuple:
Traceback (most recent call last):
  File "C:\Program Files\Sublime Text 3\time.py", line 6, in <module>

    print tup
NameError: name ‘tup‘ is not defined

三、只有一個元素的元組圓括弧必須有逗號，否則不會認為是元組

#!/usr/bin/pythontupleone=(1,)print "tupleone is :",type(tupleone)tupleoneerror=(1)print "tupleanotherone is :",type(tupleoneerror)

執行結果;

tupleone is : <type ‘tuple‘>
tupleanotherone is : <type ‘int‘>

 四、元組元素的拆分，定義變數

#!/usr/bin/pythonmyinfo=("jinhoward",30,"Male")name,age,gender=myinfoprint "Name=",nameprint "Age=",ageprint "Gender=",gender

執行結果：

Name= jinhoward
Age= 30
Gender= Male

Python學習第二篇之tuple