Use python to generate xshell connection file .sh files in batches

''' 
Requirement: According to the successfully connected xsh file, change its ip and host address, generate xsh files in batches, avoid tedious manual connection 
python version: python3
 '''


import os
import re


# f_map: host and ip mapping files: 
# host01 10.1.1.1 
# host02 10.2.2.2

# f_template: xshell template file 
# f_new: new xshell file

# ip in ip_template template file 
ip_template = " 10.12.125.63 "

with open( " map.txt " ) as f_map, open( " template.xsh " ) as f_template: #Open
     the map file to read the mapping relationship line by line 
    while True:
        line = f_map.readline()
         if len(line)== 0:
             break 
        #Remove the characters specified at the beginning and end of the string (default is space) 
        line.strip()
        regex = re.compile( ' \s+ ' )
         #cut host and ip into arrays 
        line = regex.split(line)
         print (line)
        
        #Copy the template file line by line, modify the host address at the same time, and generate a new xsh file 
        with open(line[0]+ " .xsh " , ' w ' ) as f_new:
             while True:
                content = f_template.readline()
                 if len(content)== 0:
                     #After each read, the file pointer moves to the beginning 
                    f_template.seek(0)
                     break 
                content =content.replace(ip_template, line[1]) # ## To be improved, the replace function 
                f_new.write(content) is called every time a row is read