When you useenumerate()in aforloop, you tell Python to use two variables, one for the count and one for the value itself. You’re able to do this by using a Python concept calledargument unpacking. Argument unpacking is the idea that a tuple can be split into several variables depending...
StartEnumerateForLoopCheckConditionFetchElementOutputIndex 关系图 在理解enumerate()的过程中,我们可以借助关系图来表示其和for循环结构之间的关系。 FORLOOPstringelementintindexENUMERATEintstartuses 小结 在Python中,for in循环是处理可迭代对象的一种便捷方式,而enumerate()函数则提供了一种轻松获取索引的方案。在实际...
Theenumerate()function is useful when we wanted to access both value and its index number or any sequence such as list or string. For example, a list is an ordered data structure that stores each item with its index number. Using the item’s index number, we can access or modify its ...
node1.next= node2 node2.next= node3# for node in iter(node1):# print(node.name)# it = iter(node1)# first = next(it)# for node in it:# print(node.name)forindex ,nodeinenumerate(iter(node1)):print(index)print(node.name) 它是先执行iter(node1)通过Node的iter获得一个NodeIter实例...
for loop with enumerate() Normal for loop: names = ['Alice','Bob','Charlie']fornameinnames:print(name)# Alice# Bob# Charlie While by passing an iterable object in the argument ofenumerate(), you can getindex, element. fori, nameinenumerate(names):print(i, name)# 0 Alice# 1 Bob#...
当for 循环正常执行完的情况下,执行 else 输出,如果 for 循环中执行了跳出循环的语句,比如 break ,将不执行 else 代码块的内容,与 while - else 语句一样。 for i in range(5): print(i) else: print("Loop ended") 0 1 2 3 4 Loop ended enumerate与for 结合使用 enumerate()函数 enumerate(sequence...
Loop->>Enumerate: 调用enumerate(students) Enumerate->>Loop: 返回(index, student) loop 遍历 Loop->>Print: 打印学生序号和姓名 Print-->>Loop: 继续下一次循环 end 流程图 下面是使用mermaid语法绘制的流程图,展示了上述代码的逻辑流程: flowchart TD ...
# 使用列表推导式生成九九乘法表，并按照乘法格式输出multiplication_table = [f"{j} x {i} = {i * j}" for i in range(1, 10) for j in range(1, i + 1)]# 打印九九乘法表，每行打印10个结果for index, line in enumerate(multiplication_table):# 每行打印10个结果后换行 if (index + 1)...
问Pythonic: python for循环中的range vs enumerateEN元祖又叫做只读列表，可循环查询、可切片，元祖里的...
for i in range(5): if i == 3: break # 结束循环 print(i) else: print("Loop finished") # 这行不会执行,因为循环被break终止了 for i in range(10): if i == 5: continue # 输出结果:0 1 2 3 4 6 7 8 9 print(i) 5. 结合 enumerate 使用 在循环中迭代列表,如果你还想跟踪元素的...