Xtykutl

I have several files (yml, tf, xml) for which I need to find a string i.e. var1, and then insert a new line with foo2, the rest of the line is unchanged.
Example

variable "my_vars" {

  type = "map"



  default = {

    var1 = "10.48.225.160/28"

    var2 = "10.48.225.160/28"

    var3 = "10.48.225.160/28"

    var4 = "10.48.225.160/28"

  }

}

I tried the code below but I need the edit in place.

import sys

import string



def find(substr, replstr, infile):

    f = open(infile,"rw")

    lines = f.readlines()

    for i in range(len(lines)):

        if substr in lines[i]:

            j = string.replace(lines[i], substr, replstr)

            lines.insert(i + 1, j)

    print "n".join(lines)



old_env = sys.argv[1]

new_env = sys.argv[2]

file = sys.argv[3]



find(old_env, new_env, file)

import sys

import string



def find(substr, replstr, infile):

    f = open(infile,"r")

    lines = f.readlines()



    for i in range(len(lines)):

        if substr in lines[i]:

            j = string.replace(lines[i], substr, replstr)

            lines.insert(i + 1, j)

    print "".join(lines)

    f.close()



    f = open(infile,"w")

    k = "".join(lines)

    f.writelines(k)

    f.close()



old_env = sys.argv[1]

new_env = sys.argv[2]

file = sys.argv[3]



find(old_env, new_env, file)

The one caveat is there is a match on the last line of the file, the iterator will miss this.