Python Code: # Create a tuple containing three numberstuplex=4,8,3# Print the contents of the 'tuplex' tupleprint(tuplex)# Unpack the values from the tuple into the variables n1, n2, and n3n1,n2,n3=tuplex# Calculate and print the sum of n1, n2, and n3print(n1+n2+n3)# Attempt to...
Unpacking a TupleWhen we create a tuple, we normally assign values to it. This is called "packing" a tuple:ExampleGet your own Python Server Packing a tuple: fruits = ("apple", "banana", "cherry") Try it Yourself » But, in Python, we are also allowed to extract the values ...
Unpacking a tuple in Python is the process by which you can extract the contents of a tuple into separate variables. There are two ways to unpack a tuple: 1. Using the assignment operator. 2. Using the destructuring (*) operator.
If the number of variables is more or less than the length of tuple, Python raises a ValueError.ExampleOpen Compiler tup1 = (10,20,30) x, y = tup1 x, y, p, q = tup1 It will produce the following output −x, y = tup1 ^^^ ValueError: too many values to unpack (expected ...
运行发上面的代码,你会发现这里的*号和上面的*号作用相反,上面的*会接收一个 tuple 把多个值给到一个变量身上。但这里是把变量里的多个值分别送出去,一个是用来接收的,一个是用来输送的。这里要注意区别一下*的这两种用法的不同作用。 此时你已理解了解构(unpack)的内容了,unpack 概念在函数中的变量传参经常...
tuples = ((1, 3, 5), (7, 9, 11), (13, 15, 17)) result = [(x,y,z) for x,y,z in tuples] 2. Using * Unpacking Method You can use unpack operator*on a tuple to extract the individual elements from a tuple and assign its elements to a list by enclosing the tuple in ...
If we try to unpack a three-item tuple into just two variables, we'll get an error: >>>x,y=pTraceback (most recent call last):File"<stdin>", line1, in<module>ValueError:too many values to unpack (expected 2) Tuple unpacking describes the shape of the tupleyou're unpacking. Sothe...
my_tuple = (1, 2, 3) a, b = my_tuple 代码语言:javascript 代码运行次数:0 运行 AI代码解释 ValueError: too many values to unpack (expected 2) 变量的数量多于元组中的元素数量: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 my_tuple = (1, 2, 3) a, b, c, d = my_tuple 代码...
运行发上面的代码,你会发现这里的*号和上面的*号作用相反,上面的*会接收一个tuple把多个值给到一个变量身上。但这里是把变量里的多个值分别送出去,一个是用来接收的,一个是用来输送的。这里要注意区别一下*的这两种用法的不同作用。 此时你已理解了解构(unpack)的内容了,unpack概念在函数中的变量传参经常遇到...
截图中的 BUILD_TUPLE 指令会将给定数量的栈顶元素创建成元组，然后被 UNPACK_SEQUENCE 指令解包，再依次赋值。值得一提的是，此处之所以比前面的“a,b=1,2”多出一个 build 操作，是因为每个变量的 LOAD_FAST 需要先单独入栈，无法直接被组合成 LOAD_CONST 入栈。也就是说，“=”号右侧有变量时，不会出现...