'My name is {},age:{}'.format('Anxc',18)
'My name is Anxc,age:18'

'My name is {1},age:{0}'.format(18,'Anxc')
'My name is Anxc,age:18'

'右对齐{:#>10}'.format(10)
'右对齐########10'

'My name is{name},age:{age}'.format(name='Anxc',age=18)
'My name isAnxc,age:18'

> '{:.4f}'.format(1/3)
'0.3333'
> '{:4f}'.format(100)
'100.000000'#目前没有发现整数是啥用处

二进制
 b 
八进制 o 
十进制 
十六进制
 x
'18的二进制：{:b}'.format(18)
'18的二进制：10010'
> '18的八进制：{:o}'.format(18)
'18的八进制：22'
> '18的十六进制：{:x}'.format(18)
'18的十六进制：12'

> '{:,}'.format(19012390123)
'19,012,390,123'

> person=['Anxc',18]
 'I am {0[0]},age:{0[1]}'.format(person)
'I am Anxc,age:18'
> x=[12,13]
> 'I am {0[0]},age:{1[1]}'.format(person,x)
'I am Anxc,age:13'