Python - Replace Value in Text at Random

Question

I have two open source files I've been messing around with, one file is a small macro script I'm working with, second is a txt file filled with commands I'd like to insert in to the first script in a random order within their respective lines. I've managed to come up with this script for searching and replacing the values, but not to insert them in a random order from the second txt file.

def replaceAll(file,searchExp,replaceExp):
    for line in fileinput.input(file, inplace=1):
        if searchExp in line:
            line = line.replace(searchExp,replaceExp)
        sys.stdout.write(line)

replaceAll('C:/Users/USERACCOUNT/test/test.js','InterSearchHere', RandomValueFrom2ndTXT)

Any help if greatly appreciated! Thanks in advance!

unutbu · Accepted Answer · 2011-10-15 20:23:52Z

1

import random
import itertools as it

def replaceAll(file,searchExp,replaceExps):
    for line in fileinput.input(file, inplace=1):
        if searchExp in line:
            line = line.replace(searchExp,next(replaceExps))
        sys.stdout.write(line)

with open('SecondFile','r') as f:
    replaceExp=f.read().splitlines()
random.shuffle(replaceExps)         # randomize the order of the commands
replaceExps=it.cycle(replaceExps)   # so you can call `next(replaceExps)`

replaceAll('C:/Users/USERACCOUNT/test/test.js','InterSearchHere', replaceExps)

Each time you call next(replaceExps) you get a different line from the second file.

When a finite iterator is exhausted, next(replaceExps) will raise a StopIteration exception. To prevent that from ever happening, I used itertools.cycle to make the shuffled command list repeat ad infinitum.

edited Oct 15, 2011 at 20:23

answered Oct 15, 2011 at 20:16

unutbu

886k197 gold badges1.9k silver badges1.7k bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Python - Replace Value in Text at Random

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related