001、 格式化数值
>>> "{:.2%}".format(0.123456789)
'12.35%'
>>> "{:.5%}".format(0.123456789)
'12.34568%'
>>> "{:.2}".format(0.123456789)
'0.12'
>>> "{:.5}".format(0.123456789)
'0.12346'
002、格式化字符串
>>> "{}".format("Python")
'Python'
>>> "xx{}yy".format("Python")
'xxPythonyy'
>>> "xx{}yy".format("kkkk")
'xxkkkkyy'
标签：函数,format,python,yy,Python,xx,0.123456789 From： https://www.cnblogs.com/liujiaxin2018/p/16870803.html