newlist = [] for x in iterable: for i,y in enumerate(newlist): if x < y: #只要将此<于号,换成大于号则是倒序打印 newlist.insert(i,x) break else: newlist.append(x) return newlist print(sort([1,9,8,5])) #[1,5,8,9] 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12....
Python 使用缩进来表示一个语句是否属于一个逻辑上的“块”,也就是说,如果if 语句判断为True,那么if 语句后面所有缩进的代码都要被执行,然后Python 解释器再继续下一步工作。你会发现这种缩进还会在随后讨论的其他逻辑块中出现,现在你需要记住的是,在Python 中缩进是有明确意义的,你必须遵循这个原则。如果你使用IDE...
具体代码执行的语句是if和else,意思是,如果if语句判断是True,就把缩进的print语句执行了,否则,就执行else下的命令。 边界条件有:值比较和逻辑比较 案例: 3、循环 把容器中的每一个数据都按照特定的规则进行重复处理; 有for和while循环,python中使用较多的是for循环; for循环语句的基本格式为: break语句可以提前退...
2.if else 关键字后边一定要加冒号 : #!/usr/bin/python'''create By to be crazy All rights Reserved'''score=int(raw_input("Enter your score please\n"))if(score>0andscore<100):if(score>90):print"your score is A"elif(score>60):print"your score is B"else:print"your score is C"e...
像其他语言一样,python中if语句用于控制程序的执行,其中"判断条件"成立时(非零),则执行后面的语句,而执行内容可以多行,以缩进来区分表示同一范围。else 为可选语句,当需要在条件不成立时执行内容则可以执行相关语句。基本形式见下例: if 2)多条件判断
print('{}\t{}\t{}\t{}'.format(key2, start +1, start +len(value1), value1))## 输出结果new= seqRef[start+1:].find(value1) #继续在剩余序列中查找## 更新匹配的起始位置ifnew== -1:breakstart= start +new+1#若new不等于-1,重新对start赋值(继续查找后续序列,一个循环能够对目标序列查...
empNum=0salarySum=0salarys=[]whileTrue:s=input("请输入员工的薪资(按 Q 或 q 结束)")ifs.upper()=='Q':print("录入完成,退出")breakiffloat(s)<0:continueempNum+=1salarys.append(float(s))salarySum+=float(s)print("员工数{0}".format(empNum))print("录入薪资:",salarys)print("平均薪...
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The value of UUID_SHORT() is guaranteed to be unique if the following conditions hold: The server_id of the current host is unique among your set of master and slave servers server_id is between 0 and 255 You don’t set back your system time for your server between mysqld restarts ...
After installation, you may able to see all contents in/Library/Frameworks/Python.framework/Versions/2.7as a default path. You can also see shortcuts in/usr/local/bin, if it's already in yourPATH, you can build the game without restart the creator. ...