六、字符串格式化

 1 # -*- coding:utf-8 -*-
 2 name = input("name:")
 3 age = input("age:")
 4 job = input("job:")
 5 #此处看着特别迷糊,可以考虑其他办法
 6 #此种写法为拼接形式,每添加一个字符串都会在内存里单独开辟一个空间,相当于创建一个新的变量
 7 print("Infomation of :" +name+ "\nName:" +name+ "\nAge:" +age+ "\nJob:"+job)
 8 #此种写法在内存中一共只有一个空间,正常来说不建议通过拼接的形式来做
 9 print("Information of %s:\nName:%s\nAge:%s\nJob:%s" %(name,name,age,job))
10 #以上两种打印方式全部写在一行里如果数据量较大操作起来比较乱
11 #Python中单引号与双引号没有区别
12 #第三种方法
13 asg = ‘‘‘
14 Infomation of %s:
15 Name:%s
16 age:%s
17 job:%s
18 ‘‘‘ %(name,name,age,job)
19 print(asg)
20 
21 注意:python中的+号,数字只能加数字,字符串智能加字符串
22 print("Infomation of :" +name+ "\nName:" +name+ "\nAge:" +age+ "\nJob:"+job)

 1 # -*- coding:utf-8 -*-
 2 name = input("name:")
 3 age = int(input("age:"))
 4 job = input("job:")
 5 print("Infomation of :" +name+ "\nName:" +name+ "\nAge:" +age+ "\nJob:"+job)
 6 --------------------------------------------------------------------------------
 7 name:aa
 8 age:33
 9 job:aa
10 Traceback (most recent call last):
11   File "F:/python/day1/字符串格式化.py", line 8, in <module>
12     print("Infomation of :" +name+ "\nName:" +name+ "\nAge:" +age+ "\nJob:"+job)
13 TypeError: Can‘t convert ‘int‘ object to str implicitly

 1 asg = ‘‘‘
 2 Infomation of %s:
 3 Name:%s
 4 age:%d
 5 job:%s
 6 ‘‘‘ %(name,name,age,job)
 7 print(asg)
 8 ------------------------------------------------------------------------------------
 9 name:aa
10 2age:2
11 job:dd
12 Traceback (most recent call last):
13   File "F:/python/day1/字符串格式化.py", line 19, in <module>
14     ‘‘‘ %(name,name,age,job)
15 TypeError: %d format: a number is required, not str
16 
17 Process finished with exit code 1

 1 # -*- coding:utf-8 -*-
 2 name = input("name:")
 3 age = int(input("age:"))
 4 job = input("job:")
 5 asg = ‘‘‘
 6 Infomation of %s:
 7 Name:%s
 8 age:%d
 9 job:%s
10 ‘‘‘ %(name,name,age,job)
11 print(asg)
12 ------------------------------------------------------------------------------------
13 name:aa
14 age:21
15 job:dd
16 
17 Infomation of aa:
18 Name:aa
19 age:21
20 job:dd

 1 # -*- coding:utf-8 -*-
 2 name = input("name:")
 3 age = int(input("age:"))
 4 job = input("job:")
 5 asg = ‘‘‘
 6 Infomation of %s:
 7 Name:%s
 8 age:%d
 9 job:%s
10 ‘‘‘ %(name,name,age,job)
11 print(asg)
12 -----------------------------------------------------
13 输入:
14 name:                 aa
15 age:21
16 job:              ff
17 #打印
18 Infomation of                  aa:
19 Name:                 aa
20 age:21
21 job:              ff

 1 # -*- coding:utf-8 -*-
 2 name = input("name:").strip()
 3 age = int(input("age:"))
 4 job = input("job:").strip()
 5 asg = ‘‘‘
 6 Infomation of %s:
 7 Name:%s
 8 age:%d
 9 job:%s
10 ‘‘‘ %(name,name,age,job)
11 print(asg)
12 --------------------------------------------------------------------------------
13 输入；
14 name:                        dddddd
15 age:21
16 job:         ff
17 打印:
18 Infomation of dddddd:
19 Name:dddddd
20 age:21
21 job:ff

 1 # -*- coding:utf-8 -*-
 2 name = input("name:").strip(‘aa‘)
 3 age = int(input("age:"))
 4 job = input("job:").strip(‘bb‘)
 5 asg = ‘‘‘
 6 Infomation of %s:
 7 Name:%s
 8 age:%d
 9 job:%s
10 ‘‘‘ %(name,name,age,job)
11 print(asg)
12 --------------------------------------------------------------------------------
13 输入:
14 name:aa
15 age:12
16 job:bbxx
17 打印:
18 Infomation of :
19 Name:
20 age:12
21 job:xx

1 for i in range(name_list.count(‘9999‘))
2     name_list.remove(‘9999‘)