#forfor i in range(1,11):print(f'开始循环{i}',i)\i=1
while i < 11:print(f'开始循环{i}',i)i+=1list1=[1,2,3,4,5]
SUM=sum(list1)
print(SUM)#求和
n = int(input("请输入一个数n:"))
sum1=0
i=1
while i < n+1:#print(f'开始循环{i}',i)#sum1 = sum1+isum1+=ii+=1
print(sum1)n = int(input("请输入一个数n:"))
sum1=0
for i in range(1,n+1):sum1 = sum1+i
print(sum1)#打印数字队列
row = 5
for i in range(1,row+1):for lie in range(1,i+1):#print("lie",lie)print(lie,end='')#print("row",row)print()print("++++++++++++++++++")
row = 5
for i in range(1,row+1):for lie in range((row+1)-i,0,-1):#print("lie",lie)print(lie,end='')#print("row",row)print()print("++++++++2++++++++++")##计算一个数，有多少位
设置 count = 0，用作计数器。设置循环条件 num != 0。使用整除 num = num // 10，去掉最后一位数。计数器加 1。
num= 123333.0##计算一个数，有多少位
count=0
while num !=0:num = num//10print('num',num)count+=1print('count',count)
print(count)
'''
#乘法口诀
for i in range (1,10):for j in range(1,i+1):#print('{}*{}='+i*j.format(i,j))print('{}*{}={}'.format(j,i,j*i),end='\t')print()
https://baijiahao.baidu.com/s?id=1764967355461962531&wfr=spider&for=pc
)
)
