#while循环
n=100
sum=0
counter=1
while counter<=n:
sum=sum+counter
counter+=1
print('1到%d之和为:%d'%(n,sum))
print('1到%d之和为:'%n,sum)
#无限循环
var=1
while var==1:
num=int(input('输入数字:'))
print('你输入的是:',num)
print('bye')
count=0
while count<5:
print(count,'小于5')
count=count+1
else:
print(count,'大于等于5')
#for语句
languages=['a','b','c','d']
for x in languages:
print(x)
#break跳出当前循环
sites=['google','baidu','runoob','taobao']
for site in sites:
if site=='runoob':
print('菜鸟教程！')
break
print('循环教程',site)
else:
print('没有循环数据')
print('完成循环')
#range()遍历数字序列
for i in range(5,9):
print(i,end=",")
else:
print('didi')
for j in range(0,10,3):
print(j,end=',')
else:
print('lili')
sites=['google','baidu','runoob','taobao']
for i in range(len(sites)):
print(i,sites[i])
list(range(5))
#break和continue语句及循环中的else子句
#第一实例:for-break
for letter in 'runoob':
if letter=='b':
print('找到了%s！'%letter)
break
print('字母为:',letter)
print('完成！')
#第二实例:while-break
var=10
while var>0:
print('当前数值为：',var)
var-=1
if var==3:
print('找到了：',var)
break
print('bye!')
#第三实例:while-continue
for letter in 'runoob':
if letter=='o': #字母为o跳过输出
continue
print('字母为:',letter)
print('完成！')
for n in range(2,10):
for x in range(2,n):
if n%x==0:
print(n,'等于',x,'*',n//x)
break
else:
print(n,'是质数')
#pass语句不做任何事情，用作占位语句
for letter in 'runoob':
if letter=='o':
pass
print('pass语块')
print('字母为:',letter)
#乘法口诀
for i in range(1,10):
for j in range(1,i+1):
print(str(i)+'*'+str(j)+'='+str(i*j)+' ',end='')
print('')
for i in range(9,0,-1):
for j in range(1,i+1):
print(str(i)+'*'+str(j)+'='+str(i*j)+' ',end='')
print('')
