我该如何处理是：log.write LEN（[名

Question

我有一个问题，我不知道如何“连接” log.write和len 其对10日线

import os 
import os.path 
import time 


DIR = '/home/richard/DB/' 

#while a != 0: 
log = open("logfile.log","wt") 
log.write len([name for name in os.listdir(DIR) if os.path.isfile(os.path.join(DIR, name))]) 
log.close() 

Answer 1

使用：

log.write(str(len([name for name in os.listdir(DIR) if os.path.isfile(os.path.join(DIR, name))]))) 

Answer 2

小语法错误

import os 
import os.path 
import time 


DIR = '/home/richard/DB/' 

#while a != 0: 
log = open("logfile.log","wt") 
log.write(len([name for name in os.listdir(DIR) if os.path.isfile(os.path.join(DIR, name))])) 
log.close() 

Answer 3

你需要传递一个字符串log.write

log.write("{}".format(len([name for name in os.listdir(DIR) if os.path.isfile(os.path.join(DIR, name))])) 

或

log.write(str(len([name for name in os.listdir(DIR) if os.path.isfile(os.path.join(DIR, name))]))