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

f = open("/Users/ar/Desktop/1/out_test/kai1.txt","r")
line = f.readlines()
f.close()
count = 0
for i in range(len(line)):
    if i % 2 == 1:
        line[i] = ''
        count += 1
for i in range(count):
    line.remove('')
f = open("/Users/ar/Desktop/1/out_test/kai1.txt","w")
f.writelines(line)
f.close()

jackz007

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

wp231957

纯文本文件的file对象才有readlines方法