Python-10-字符串格式化_01_%

#!/usr/bin/env python
# -*- conding:utf8 -*-
# 字符串格式化：

# 1、%s  %d
# %s  可以接收任何类型
# %d   只能接收数字
v = "I am %s my hobby is %s" % ("new","newmet.top")
print(v)
v = "I am %s my hobby is %d" % ("new",1)
print(v)
v = "I am %s my hobby is %s" % ("new",[1,2])
print(v)

# 2、打印浮点数、保留几位小数 - %f
v = "percent %f" % 88.99  # 结果：percent 88.990000   默认保存6位小数
print(v)
v = "percent %.2f" % 88.99  # 结果：percent 88.99   在 %f 中间加入  .2  保留2位小数
print(v)

# 3、打印百分比
v = "percent %.2f %%" % 88.99  # 结果：percent 88.99 %
print(v)

v = "I am %(name)s age %(age)d" % {"name":"nwemet","age":25}        # 结果：I am nwemet age 25
print(v)
v = "percent %(mm).2f %%" % {"mm":123.13123}        # 结果：percent 123.13 %
print(v)

v = "I am %(name)-20s my hobby is new" % {"name":"newmet"}
print(v)        # 结果：I am newmet               my hobby is new   -20  左对齐 宽度是20
v = "I am %(name)+20s my hobby is new" % {"name":"newmet"}
print(v)        # 结果：I am               newmet my hobby is new   +20 右对齐 宽度是20

# 加颜色！！！！
v = "I am 33[45;1m%(name)+20s33[0m my hobby is new" % {"name":"newmet"}
print(v)            # 颜色 45 确定

print("root","x","0","0",sep=":")       # 结果：root:x:0:0