Aloopis a sequence of instructions that is continually repeated until a certain condition is reached. For instance, we have a collection of items and we create a loop to go through all elements of the collection
There may be a situation in which you may need to exit a loop completely for a particular condition or you want to skip a part of the loop and start the next execution. Theforloop andwhileloop have control statementsbreakandcontinueto handle these situations. 在某些情况下,您可能需要针对特定...
The for loop and while loop are two different approaches to executing the loop statements in python. They both serve the same functionality of looping over a python code till a condition is being fulfilled. For loops and while loops differ in their syntax. In while loops, we have to mention...
for iterating_var in sequence: statements(s) 例1: 输入: for i in list(range(5)): print(i) 系统输出: 0 1 2 3 4 这是一个最简单的for循环。list(range(5))代表的实体为[0,1,2,3,4]. 上述循环的含义就是生成一个变量i,并让i指代list[0,1,2,3,4]中的每一个数字,并进行输出。 例2...
for iterating_var(变量) in sequence(序列): statements(s) for循环的流程图: #用for 循环来计算1+2+3+...100 >>> a = 0 >>> for i in range(1,101): # range(1,101)是一个整数列表,从1开始到101(不包含101) ... a += i .
A nested loop is structurally similar tonestedifstatements Python for loop with range() function Python range is one of thebuilt-in functions. When you want the for loop to run for a specific number of times, or you need to specify a range of objects to print out, the range function wo...
“list comprehension with if else” conditions are very useful for all the complicated repeated programs code. List comprehension is defined with short expressions rather than complete for loop statements. This write-up covered all the details of various forms of “one line for loop” with the ...
Loops are used to repeatedly execute a block of program statements. The basic loop structure in Python is while loop. Here is the syntax. Syntax: while (expression) : statement_1 statement_2 ... The while loop runs as long as the expression (condition) evaluates to True and execute the...
-Python 循环结构: 迭代执行某段语句块,有两种执行方式,一种是 while 循环,另一种是通过 for 循环 while 循环 每次循环都会先判断 test 表达式,若表达式为 True,会执行 statement1,否则跳出循环执行 statement2。 while <test>: <statements1> # test 为 True, 执行 statements1 else: <statements2> # test...
Summary: in this tutorial, you will learn about PL/SQL WHILE loop statement to execute a sequence of statements as long as a specified condition is TRUE. Introduction to PL/SQL WHILE loop statement PL/SQL WHILE loop is a control structure that repeatedly executes a code block as long as a...