标签:bsp 操作符 span 圆周率 格式 %s orm bbb form
python中字符串的格式化。
1、format
位置参数
>>> "{0} and {1}".format("aaa","bbb")
‘aaa and bbb‘
>>> "{0},{1} and {2}".format("aaa","bbb","ccc")
‘aaa,bbb and ccc‘
关键字参数
>>> "{a},{b} and {c}".format(c = "xxx",a = "mmm",b = "qqq")
‘mmm,qqq and xxx‘
>>> "{0}:{1:.2f}".format("圆周率:",3.1415926)
‘圆周率::3.14‘
2、格式化操作符 %
格式化字符串:%s
>>> "%s" % "abcd"
‘abcd‘
格式化整数:%d
>>> "%d" % 100
‘100‘
>>> "%d" % 100.434
‘100‘
格式化浮点数:%f
>>> "%f" % 100.34245
‘100.342450‘
>>> "%f" % 100
‘100.000000‘
科学计数法:%e
>>> "%e" % 1000
‘1.000000e+03‘
标签:bsp 操作符 span 圆周率 格式 %s orm bbb form
原文地址:https://www.cnblogs.com/liujiaxin2018/p/14725030.html