How do I create a incrementing filename in Python?

Question

I\'m creating a program that will create a file and save it to the directory with the filename sample.xml. Once the file is saved when i try to run the program again it over

Answer 1

Here is one more example. Code tests whether a file exists in the directory or not if exist it does increment in the last index of the file name and saves The typical file name is: Three letters of month_date_lastindex.txt ie.e.g.May10_1.txt

import time
import datetime
import shutil
import os
import os.path


da=datetime.datetime.now()

data_id =1
ts = time.time()
st = datetime.datetime.fromtimestamp(ts).strftime("%b%d")
data_id=str(data_id)
filename = st+'_'+data_id+'.dat'
while (os.path.isfile(str(filename))):
    data_id=int(data_id)
    data_id=data_id+1
    print(data_id)
    filename = st+'_'+str(data_id)+'.dat'
    print(filename)


shutil.copyfile('Autonamingscript1.py',filename)

f = open(filename,'a+')
f.write("\n\n\n")
f.write("Data comments: \n")


f.close()