删除txt文件的偶数行报错:AttributeError: 'str' object has no attribute 'readl..

Arrrr

想用readlines（）和del函数删除txt文档的偶数行
代码如下

file1="/Users/ar/Desktop/1/out_test/kai1.txt"
lines=file1.readlines()
del lines[1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41]


报错
AttributeError: 'str' object has no attribute 'readlines'
求大神帮助！

临时号

1. f = open("/Users/ar/Desktop/1/out_test/kai1.txt","r")
   
2. line = f.readlines()
   
3. f.close()
   
4. count = 0
   
5. for i in range(len(line)):
   
6.     if i % 2 == 1:
   
7.         line[i] = ''
   
8.         count += 1
   
9. for i in range(count):
   
10.     line.remove('')
    
11. f = open("/Users/ar/Desktop/1/out_test/kai1.txt","w")
    
12. f.writelines(line)
    
13. f.close()

复制代码

jackz007

1. s , c = '' , 0
   
2. with open("/Users/ar/Desktop/1/out_test/kai1.txt") as fp:
   
3.     for x in fp:
   
4.         if not c % 2:
   
5.             s += x
   
6.         c += 1
   
7. with open("/Users/ar/Desktop/1/out_test/kai1_new.txt" , "w") as fp:
   
8.     fp . write(s)

复制代码

wp231957

纯文本文件的file对象才有readlines方法