python2.7的字符串拼接

本是古典何须时尚 2022-08-30 15:49 236阅读 0赞

### 方法一：直接字符串拼接 ###

# -*- coding: UTF-8 -*-
    # 开发人:李柏霖
    # 开发时间:2021/7/21 10:32
    
    name = raw_input("Name:")
    age = raw_input("Age:")
    job = raw_input("job:")
    salary = raw_input("salary:")
    
    info = ''' "------info of ''' + name + '''------" Name:''' + name + ''' Age:''' + age + ''' job:''' + job + ''' salary:''' + salary + ''' '''

### 输出结果： ###

![image-20210721111224948][]

### 方法二：使用占位符 ###

# -*- coding: UTF-8 -*-
    # 开发人:李柏霖
    # 开发时间:2021/7/21 10:32
    
    name = raw_input("Name:")
    age = raw_input("Age:")
    job = raw_input("job:")
    salary = raw_input("salary:")
    
    info3=''' ——————————————————————————————占位符 %s—————————————————————————————— Name:%s Age:%s Job:%s Salary:%s '''%(name,name,age,job,salary)
    
    
    print info3

## 输出结果： ##

![image-20210721114047120][]

### 字符串类型转换 ###

# -*- coding: UTF-8 -*-
    # 开发人:李柏霖
    # 开发时间:2021/7/21 10:32
    
    name = raw_input("Name:")
    age = raw_input("Age:")
    job = raw_input("job:")
    salary = raw_input("salary:")
    
    info3=''' ——————————————————————————————占位符 %s—————————————————————————————— Name:%s Age:%d Job:%s Salary:%s '''%(name,name,age,job,salary)
    
    
    print info4

#### 报错： ####

![image-20210721114502170][]

TypeError: %d format: a number is required, not str

### 原因分析： ###

输入的都是字符串类型，我们转换一下格式就可以了。

![image-20210721115007384][]

### 合拼为一句： ###

age = int(raw_input("Age:"))

## 占位符拼接 ##

### 方法一： ###

# -*- coding: UTF-8 -*-
    # 开发人:李柏霖
    # 开发时间:2021/7/21 10:32
    
    name = raw_input("Name:")
    age = int(raw_input("Age:"))
    job = raw_input("job:")
    salary = raw_input("salary:")
    
    info5=''' ——————————————————————————————占位符 {name5}—————————————————————————————— Name:{name5} Age:{age5} Job:{job5} Salary:{salary5} '''.format(name5=name,age5=age,job5=job,salary5=salary)

### 效果一样： ###

![image-20210721115938534][]

### 方法二： ###

name = raw_input("Name:")
    age = int(raw_input("Age:"))
    job = raw_input("job:")
    salary = raw_input("salary:")
    
    info6=''' ——————————————————————————————占位符 {0}—————————————————————————————— Name:{0} Age:{1} Job:{2} Salary:{3} '''.format(name,age,job,salary)
    
    print info6

### 运行结果： ###

![image-20210721141406368][]

[image-20210721111224948]: /images/20220829/a9060b946476471eb936477e68459878.png
[image-20210721114047120]: /images/20220829/9a82d8f252494e8784409e7e5a7bb9cb.png
[image-20210721114502170]: /images/20220829/e16c04b1672844f090749429cb972308.png
[image-20210721115007384]: /images/20220829/e21d840c861442bfa7f0e94dd33128a1.png
[image-20210721115938534]: /images/20220829/9a2fc9cf8ff84275a2355ba749457a12.png
[image-20210721141406368]: /images/20220829/5b1bb3bec4d0467f982a277bec577c8b.png