2019-11-07
for a in range(1,3):
print (a)
>>>1
2
print('%d * %d = %d' % (a,2,a*2))
>>> 1*2=2
2*2=4
for b in range(1,4):
print (b)
>>> 1
2
3
print('%d * %d=%d' %(b,3,b*3))
>>>1*3=3
2*3=6
3*3=9
a=10
b=3.1415926
c='哈哈'
print(' 我今年%d岁了。' %a) #%d代表填充整数到指定位置。
>>>我今年10岁了。
print（'我知道圆周率是%f。' %b） #%f代表填充浮点数到指定位置。
>>>我知道圆周率是3.1415926。
print('我%s大笑。' %c) #%s代表填充字符串到指定位置。
>>>我哈哈大笑。
print('我今年%d岁了，我知道圆周率是%f，%s。' %(a, b ,c)) #同时填充多个占位
>>>我今年10岁了，我知道圆周率是3.1415926，哈哈。
for i in range(1,3):
print('%d X %d = %d' % (i,2,i*2),end = ' ')
print('') #用来换行
for i in range(1,4):
print('%d X %d = %d' % (i,3,i*3),end = ' ')
>>>1 X 2 = 2 2 X 2 = 4
1 X 3 = 3 2 X 3 = 6 3 X 3 = 9
print('hello',end='')
print('world')
print('hello',end=' ')
print('world')
print('hello',end='!')
print('world')
>>> helloworld
hello world
hello!world
for i in range(1,10):
for j in range (1,i+1):
print('%d*%d=%d' %(j , i , j*i),end=' ')
print(' ')
>>>1 X 1 = 1
1 X 2 = 2 2 X 2 = 4
1 X 3 = 3 2 X 3 = 6 3 X 3 = 9
1 X 4 = 4 2 X 4 = 8 3 X 4 = 12 4 X 4 = 16
1 X 5 = 5 2 X 5 = 10 3 X 5 = 15 4 X 5 = 20 5 X 5 = 25
1 X 6 = 6 2 X 6 = 12 3 X 6 = 18 4 X 6 = 24 5 X 6 = 30 6 X 6 = 36
1 X 7 = 7 2 X 7 = 14 3 X 7 = 21 4 X 7 = 28 5 X 7 = 35 6 X 7 = 42 7 X 7 = 49
1 X 8 = 8 2 X 8 = 16 3 X 8 = 24 4 X 8 = 32 5 X 8 = 40 6 X 8 = 48 7 X 8 = 56 8 X 8 = 64
1 X 9 = 9 2 X 9 = 18 3 X 9 = 27 4 X 9 = 36 5 X 9 = 45 6 X 9 = 54 7 X 9 = 63 8 X 9 = 72 9 X 9 = 81
i=1
while i<=9:
j=1
while j<=i:
print('%d * %d = %d' %(j , i, i *j), end=' ')
j+=1
print('')
i+=1
for i in range(1,10):
for j in range(1,10):
print('%d X %d = %d'%(j,i,i*j),end=' ')
if i==j:
print('')
break
