What is for loop in Python In Python, theforloop is used to iterate over a sequence such as alist, string,tuple, other iterable objects such asrange. With the help offorloop, we can iterate over each item presen
#_*_coding:utf-8_*___author__='Alex Li'foriinrange(10):print("loop:", i ) 输出 loop: 0 loop:1loop:2loop:3loop:4loop:5loop:6loop:7loop:8loop:9 需求一:还是上面的程序,但是遇到大于5的循环次数就不走了,直接跳出本次循环进入下一次循环 foriinrange(10):ifi>5:continue#不往下走了,...
但其实这里所指的运行速度慢在大多数情况下用户是无法直接感知到的,必须借助测试工具才能体现出来,比如你用C运一个程序花了0.01s,用Python是0.1s,这样C语言直接比Python快了10倍,算是非常夸张了,但是你是无法直接通过肉眼感知的,因为一个正常人所能感知的时间最小单位是0.15-0.4s左右...
In Python, loops can be used to solve awesome and complex problems. You will likely encounter problems that would require you to repeat an action until a condition is met(while loop works best here) or a problem that requires you to perform an action on a bunch of items(for loop works ...
Code to be executed as part of theforloopmustbe indented (use four spaces or one press of the Tab key, depending on preference or coding standard used). To use individual items in the list or range, we have to create a variable (itemin the syntax above). There’s no need to declare...
Method 1: Single-Line For Loop Just writing thefor loopin a single line is the most direct way of accomplishing the task. After all, Python doesn’t need the indentation levels to resolve ambiguities when the loop body consists of only one line. ...
Python for loop and while loop #!pyton2#-*- coding:utf-8 -*-forletterin"Python":print"Current letter is:",letter fruits=["apple","mango","pear"]forfruitinfruits:printfruitforindexinrange(len(fruits)):printfruits[index]>python2 test.py...
Python for循环可以遍历任何序列的项目,如一个列表或者一个字符串。 语法: for循环的语法格式如下: foriterating_varinsequence:statements(s) 流程图: 实例: 实例 #!/usr/bin/python# -*- coding: UTF-8 -*-forletterin'Python':# 第一个实例print("当前字母: %s"%letter)fruits=['banana','apple','...
/usr/bin/python# -*- coding: UTF-8 -*-i=2while(i<100):j=2while(j<=(i/j)):ifnot(i%j):breakj=j+1if(j>i/j):printi,"是素数"i=i+1print"Good bye!" 以上实例输出结果: 2是素数3是素数5是素数7是素数11是素数13是素数17是素数19是素数23是素数29是素数31是素数37是素数41是素数...
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