凯撒密码、GDP格式化输出、99乘法表

1.

plaincode=input('明文：')
print('密文：',end='')
for i in plaincode:
print(chr(ord(i)+3),end='')

 

2.

print('国家名称GDP总量(人民币亿元)')
print('{0:''<12}¥{1:''>10,.2f}'.format('中国',765873.4375))
print('{0:''<12}¥{1:''>10,.2f}'.format('澳大利亚',78312.4375))

 

3.

for i in range(1,10):
for j in range(1,i+1):
print('{0}x{1}={2:<3}\t'.format(i,j,i*j),end='')
print('')