这篇教程python元组打包和解包过程详解写得很实用，希望能帮到您。
1、在将多个以逗号分隔的值赋给一个变量时，多个值被打包成一个元组类型。当我们将一个元组赋给多个变量时，它将解包成多个值，然后分别将其赋给相应的变量。 # 打包a = 1, 10, 100print(type(a), a) # <class 'tuple'> (1, 10, 100)# 解包i, j, k = aprint(i, j, k) # 1 10 100 2、解包时，如果解包出来的元素数目与变量数目不匹配，就会引发ValueError异常。错误信息为：too many values to unpack（解包的值太多）或not enough values to unpack（解包的值不足）。 a = 1, 10, 100, 1000# i, j, k = a # ValueError: too many values to unpack (expected 3)# i, j, k, l, m, n = a # ValueError: not enough values to unpack (expected 6, got 4) 知识点扩充： python之打包，解包 #coding:utf-8#字符串，列表，元组打包与解包aString = 'abc'aList = [1, 2, 3]aTuple = 'a', 'A', 1print('Unpacking string......')first, second, third = aStringprint("string values:", first, second, third)print('/nUnpacking list......')first, second, third = aListprint("string values:", first, second, third)print('/nUnpacking tuple......')first, second, third = aTupleprint("string values:", first, second, third)#swapping two valuesx = 3y = 4print('/nBefore swapping: x = %d,y =%d' % (x, y))#首先将右边的部分打包成一个元组，即（4，3），而后解包指派给变量x,yx, y = y, x #swap Variablesprint('After swapping: x = %d, y = %d' % (x, y))到此这篇关于python元组打包和解包过程详解的文章就介绍到这了,更多相关python元组如何打包和解包内容请搜索51zixue.net以前的文章或继续浏览下面的相关文章希望大家以后多多支持51zixue.net！
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