python3格式化字符串

"""
格式化字符串的三种方式
"""
#通过%占位符来连接
print("I am %s,my age is %d,my height is %f" % ("zhangsan", 28, 1.78))
#通过{}占位符来连接，推荐此种方式
print("I am {},my age is {},my height is {}".format("zhangsan", 28, 1.78))
print("I am {1},my age is {0},my height is {2}".format("zhangsan", 28, 1.78))
#通过{name}占位符来连接，强烈推荐此种方式，避免出现匹配对应错误的问题
print("I am {name},my age is {age},my height is {height}".format(name="zhangsan", age=28, height=1.78))