如何在連接文件之間添加一個空的新行？

Question

我concadenating文件與此：

filenames = ['ch01.md', 'ch02.md', 'ch03.md', 'ch04.md', 'ch05.md'] 
with open('chall.md', 'w') as outfile: 
    for fname in filenames: 
    with open(fname) as infile: 
     outfile.write(infile.read()) 

的問題是，我結束了這一點：

## Title 1 

Text 1 
## Title 2 

Text 2 

而且我想這一點：

## Title 1 

Text 1 

## Title 2 

Text 2 

如何修改腳本，所以它呢？

Answer 1

明確在infile遍歷每行和增加你寫的每一條線，outfile兩個時間換行符\n\n加入他們：

with open(fname) as infile: 
    for line in infile: 
     outfile.write(line + "\n\n") 

編輯：如果您需要後寫每個文件你可以簡單地在你處理的每個文件之後寫入新行，write()將任何字符串作爲參數並將其寫入：

with open(fname) as infile: 
     outfile.write(infile.read()) 
    outfile.write("\n\n") 

Answer 2

而是每行之後寫的（如季米特里斯·吉姆建議）每個文件後寫：

with open('chall.md', 'w') as outfile: 
    for fname in filenames: 
    with open(fname) as infile: 
     outfile.write(infile.read()) 
    outfile.write("\n\n")