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 Tuple When 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 back...
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.
a,*b=4,5,6# 4, 5, 6 会首先执行4,5,6# 但他们会被解释器解释成为元祖,但元祖会成为一个对象,如4, 5, 6是三个对象,但(4, 5, 6)就成了一个对象a,*b# 此时a和b要进行赋值,对于等号右边执行完的代码,它们面对的只有一个对象:元祖,想要拿到对应的值,就得unpack解构*# *号作为一种运算符,在...
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 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 ...
Let's talk about how to unpack a tuple in Python. We'll compare tuple unpacking to indexing tuples, both for code clarity and correctness.Also see the tuple unpacking definition in Python Terminology. An alternative to hard-coded indexes...
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...
#将a变为二进制 bytes=struct.pack('i',a) 此时bytes就是一个string字符串,字符串按字节同a的二进制存储内容相同。 再进行反操作 现有二进制数据bytes,(其实就是字符串),将它反过来转换成python的数据类型: a,=struct.unpack('i',bytes) 注意,unpack返回的是tuple,所以如果只有一个变量的话: ...