字符串拼接方式

1 使用 + 拼接字符串

2  格式化輸出：%s字符串 %d整數 %f浮點數 %%輸出% %X-16進制 %r-原始字符串 

3 str.format()

代碼如下：

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

name = input(‘input name :‘) #輸入姓名
age = int(input(‘input age:‘)) #輸入年齡
nowtime = time.strftime(‘%Y%m%d %H:%M:%S‘,time.localtime()) #
 
當前時間

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

‘‘‘
格式化輸出
方式一： %s字符串 %d整數 %f浮點數 %%輸出% %X-16進制 %r-原始字符串 
方式二： str.format()
‘‘‘

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

‘‘‘浮點數制定輸出2位小數； %%輸出%
 
‘‘‘
percent = 50.5
print(‘percent is %.2f%%‘ % percent) #制定浮點數的小數位

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

‘‘‘%s,%r的區別‘‘‘
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
"""
2018-11-03
dinghanhua
字符串拼接，格式化輸出
"""
import time

name = input(‘input name :‘) #輸入姓名
age = int(input(‘input age:‘)) #輸入年齡
nowtime = time.strftime(‘%Y%m%d %H:%M:%S‘,time.localtime()) #當前時間

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

‘‘‘
格式化輸出
方式一： %s字符串 %d整數 %f浮點數 %%輸出% %X-16進制 %r-原始字符串 
方式二： str.format()
‘‘‘

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

‘‘‘浮點數制定輸出2位小數； %%輸出%‘‘‘
percent = 50.5
print(‘percent is %.2f%%‘ % percent) #制定浮點數的小數位

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

‘‘‘%s,%r的區別‘‘‘
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))

python入門8 字符串拼接、格式化輸出