寫一個新的行字符，而無需創建一個新的行

Question

我有一個需要寫一個小bash腳本到/tmp目錄，將提示輸入憑據的程序：當我現在看起來它寫

linux_prompt_script = (
    'printf "Proxy authentication failed.\n"' 
    '\nread -s -p "Enter Password to try again: " mypassword' 
    '\nprintf "Proxy authentication succeeded\n' 
) 

像這樣當cat'編：

printf "Proxy authentication failed. 
" 
read -s -p "Enter Password to try again: " mypassword 
printf "Proxy authentication succeeded 

這顯然不會工作。有沒有辦法我可以寫一個換行符\n而不創建一個新行，並且寫它來創建一個新行？

我有什麼至今：

linux_prompt_script = (
    'printf "Proxy authentication failed.\n"' 
    '\nread -s -p "Enter Password to try again: " mypassword' 
    '\nprintf "Proxy authentication succeeded\n' 
) 


def _prompt_linux(): 

    def _rand_filename(chars=string.ascii_letters): 
     retval = set() 
     for _ in range(0, 6): 
      retval.add(random.choice(chars)) 
     return ''.join(list(retval)) 

    filename = _rand_filename() 
    filepath = "/tmp/{}.sh".format(filename) 
    while True: 
     with open(filepath, "a+") as sh: 
      sh.write(linux_prompt_script) 

Answer 1

原始字符串將在這裏很有用。引號前的r前綴是指一個原始字符串，以防止正在處理的轉義字符：

linux_prompt_script = r''' 
printf "Proxy authentication failed.\n" 
read -s -p "Enter Password to try again: " mypassword 
printf "Proxy authentication succeeded" 
''' 

with open(filepath, "a+") as sh: 
    sh.write(linux_prompt_script) 

Answer 2

你可以把你的多行文字三重引號內：

text=''' 
printf "Proxy authentication failed. 
read -s -p "Enter Password to try again: " mypassword 
printf "Proxy authentication succeeded 
''' 

所以你不必在每一行的結尾處關注\n。