python__005

一、字符串格式化

#字符串的拼接#
msg='i am a best boy'+'非常帅'
print(msg)
name=input('name:')
hobby=input(('hobby:'))
age=input('age:')
print (' i am %s ,my hobby is %s，age%s ,%s,年龄：%d'%(name,hobby,age,[222,3333,'gdgfvsdhfs'],555555))
#str能接受所有类型，

#打印浮点数  在%后边加个点，在添加数字，表示保留几位小数
msg1='float%.2f:'% 99999.22222258898995889888
print(msg1)

#打印百分比 %%
msg2='%%float%3s:'% 99999.2
print(msg2)

#根据键值对传值
msg3='我爱%(china)s,我爱%(city)s'%{'china':'中国','city':'甘肃-渭源'}
print(msg3)

msg3='我爱%(china)-60s,我爱%(city)s'%{'china':'中国','city':'甘肃-渭源'}
msg4='我爱\033[41;1m%(china)+2s\033[0m,我爱%(city)s'%{'china':'中国','city':'甘肃-渭源'}
print(msg3)
print(msg4)
#返回我爱中国                                                          ,我爱甘肃-渭源
# 我爱中国,我爱甘肃-渭源

#format
#format格式化 不一一对应将会报错
name=input('name')
age=input('age')
sex=input('sex')
tp1='i anm {},age{},sex{}'.format(name,age  ,sex)

print(tp1)
tp2='i anm {2},age{0},sex{1}'.format(name,age  ,sex)
print(tp2)
tp3='i anm {2},age{2},sex{1}'.format(name,age  ,sex)
print(tp3)
#返回：name55
# age55
# sex5h
# i anm 55,age55,sex5h
# i anm 5h,age55,sex55
# i anm 5h,age5h,sex55

print('i am {name1},{age1}'.format(**{'name1':'name','age1':'age'}))
print('i am {name1},今年{age1}岁'.format(name1='张琪',age1='19'))
# i am name,age
# i am 张琪,今年19岁

print('i am {[0]},我今年{[0]}'.format(['小明','小丽'],['23','18']))
#i am 小明,我今年23