字符串格式化

msg='i am %s my hobby is %s' % ('chb','coding')
print(msg)
字符串%s

name = 'chb'
age = 19
msg = 'i am %s my hobby is %d' % (name, age)
print(msg)

#打印浮点数
tpl = "percent %.2f" % 99.976234444444444444
print(tpl)
四舍五入

#打印百分比
tpl = 'percent %.2f %%' % 99.976234444444444444
print(tpl)

tpl = "i am %(name)s age %(age)d" % {"name": "alex", "age": 18}
print(tpl)

msg='i am %(name)+60s my hobby is alex' %{'name':’chb'}
print(msg)右对齐

msg='i am \033[43;1m%(name)+60s\033[0m my hobby is alex' %{'name':'chb'}
print(msg) 颜色
format形式

tpl = "i am {name}, age {age}, really {name}".format(name="seven", age=18) 

tpl = "i am {name}, age {age}, really {name}".format(**{"name": "seven", "age": 18})传入一个字典

tpl = "i am {:s}, age {:d}".format(*["seven", 18])传入列表
tpl = "i am {:s}, age {:d}".format("seven", 18) #["seven", 18]

l=["seven", 18]
tpl = "i am {:s}, age {:d}".format('seven',18)
print(tpl)

tpl = "numbers: {:b},{:o},{:d},{:x},{:X}, {:%},{}".format(15, 15, 15, 15, 15, 15.87623, 2)
print(tpl)