add a line to a file and then automatically rename it

[halcon]

Hi,
What if I want to add a line to a file and then automatically rename it in a cycle using a sequence of numbers. I mean, if the original file has the name file0.txt then the next file should be file1.txt and the next should be file2.txt and so on.

I hope you can give me some help here.

Thanks

[ghostdog74]

Hi,
What if I want to add a line to a file and then automatically rename it in a cycle using a sequence of numbers. I mean, if the original file has the name file0.txt then the next file should be file1.txt and the next should be file2.txt and so on.

I hope you can give me some help here.

Thanks

not tested...

import os,shutil
if os.path.exists("num"):
     value=open("num").read().strip()
lineToAdd = "new line"
newfile ="file%s.txt" % str(int(num)+1)
shutil.copy("file0.txt",  newfile)
open(newfile,"a").write(line+"\n")

[bvdet]

Hi,
What if I want to add a line to a file and then automatically rename it in a cycle using a sequence of numbers. I mean, if the original file has the name file0.txt then the next file should be file1.txt and the next should be file2.txt and so on.

I hope you can give me some help here.

Thanks

[code=Python]import os, re

patt = r'\d+\Z'

# seed file, name must end with one or more digits
fn = r'X:\directory\ subdir\name999. txt'

for i in range(5):
fnList = list(os.path.sp litext(fn))

num = re.search(patt, fnList[0]).group(0)
fnList[0] = re.sub(patt, str(int(num)+1) , fnList[0])

stringToAdd = '9876543210'

fn1 = ''.join(fnList)
f = open(fn1, 'w')
f.write('%s\n%s ' % (open(fn).read( ), stringToAdd))
f.close()
fn = fn1[/code]