字符串格式

--设置字符串格式

>>> x = 0.123456789

>>> print('value : %.2f' % x)

value : 0.12

>>>

>>> x = 0.123456789

>>> y = 0.123456789

>>> print('x = %.2f y = %.3f' % (x, y))

x = 0.12 y = 0.123

>>>

其他函数请查字符串函数

 

--格式化字符串格式

>>> 'My {pet} is {color}'.format (pet = 'dog', color = 'black')

'My dog is black'

>>> 'My {0} is {1}'.format ('dog', 'black')

'My dog is black'

>>>