python入门8 字符串拼接、格式化输出

字符串拼接方式

   1  使用 + 拼接字符串

2  格式化输出：%s字符串 %d整数 %f浮点数 %%输出% %X-16进制 %r-原始字符串
3 str.format()

代码如下：

#coding:utf-8
#/usr/bin/python
"""
2018-11-03
dinghanhua
字符串拼接，格式化输出
"""
import time

name = input(‘input name :‘) #输入姓名
age = int(input(‘input age:‘)) #输入年龄
nowtime = time.strftime(‘%Y%m%d %H:%M:%S‘,time.localtime()) #当前时间

‘‘‘使用 + 拼接字符串‘‘‘
#字符串连接
print(‘your name is  ‘+name+‘,\nyour are ‘+str(age)+‘ years old. \ntime: ‘+nowtime)

‘‘‘
格式化输出
方式一： %s字符串 %d整数 %f浮点数 %%输出% %X-16进制 %r-原始字符串
方式二： str.format()
‘‘‘

#格式化输出
print("""your name is  %s,
your are %d years old.
 time: %s"""%(name,age,nowtime))

‘‘‘浮点数制定输出2位小数； %%输出%‘‘‘
percent = 50.5
print(‘percent is %.2f%%‘ % percent) #制定浮点数的小数位

‘‘‘%X‘‘‘
x = 0xf00
print(‘16进制：0x%X‘ % x)

‘‘‘%s,%r的区别‘‘‘
print(‘str is %%s %s‘ % r‘c:\user\local‘)
print(‘str is %%r %r‘ % r‘c:\user\local‘)

# str.format()
str = """your name is  {0},
your are {1} years old.
 time: {2}"""
print(str.format(name,age,nowtime))

str2 = """your name is  {name},
your are {age} years old.
 time: {time1}"""
print(str2.format(name=name,age=age,time1=nowtime))

#coding:utf-8#/usr/bin/python"""2018-11-03dinghanhua字符串拼接，格式化输出"""import time

name = input(‘input name :‘) #输入姓名age = int(input(‘input age:‘)) #输入年龄nowtime = time.strftime(‘%Y%m%d %H:%M:%S‘,time.localtime()) #当前时间

‘‘‘使用 + 拼接字符串‘‘‘#字符串连接print(‘your name is  ‘+name+‘,\nyour are ‘+str(age)+‘ years old. \ntime: ‘+nowtime)

‘‘‘格式化输出方式一： %s字符串 %d整数 %f浮点数 %%输出% %X-16进制 %r-原始字符串 方式二： str.format()‘‘‘

#格式化输出print("""your name is  %s,your are %d years old. time: %s"""%(name,age,nowtime))

‘‘‘浮点数制定输出2位小数； %%输出%‘‘‘percent = 50.5print(‘percent is %.2f%%‘ % percent) #制定浮点数的小数位

‘‘‘%X‘‘‘x = 0xf00print(‘16进制：0x%X‘ % x)

‘‘‘%s,%r的区别‘‘‘print(‘str is %%s %s‘ % r‘c:\user\local‘)print(‘str is %%r %r‘ % r‘c:\user\local‘)

# str.format()str = """your name is  {0},your are {1} years old. time: {2}"""print(str.format(name,age,nowtime))

str2 = """your name is  {name},your are {age} years old. time: {time1}"""print(str2.format(name=name,age=age,time1=nowtime))

原文地址：https://www.cnblogs.com/dinghanhua/p/9903044.html