写一个新的行字符，而无需创建一个新的行

Question

我有一个需要写一个小bash脚本到/tmp目录，将提示输入凭据的程序：当我现在看起来它写

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

像这样当cat'编：

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

这显然不会工作。有没有办法我可以写一个换行符\n而不创建一个新行，并且写它来创建一个新行？

我有什么至今：

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

原始字符串将在这里很有用。引号前的r前缀是指一个原始字符串，以防止正在处理的转义字符：

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号内：

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结尾处关注\n。