save data in .txt after certain interval

[Shaswat]

Hi Everyone,

Here is just snippet of my code to tell exact my requirement and not my actual code.

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import time, datetime   ctr=100   opn = open("log.txt","a+")   while(ctr):     opn.writelines(str(ctr))     ctr=ctr-1     time.sleep(1)     print(ctr)   opn.close() #close file

I am working on automating a process in which I need to save the data after certain interval of time.
Above method works but data will store only after the file closes. Also, I can not get the data in file if user interrupt the process.

Is there any way I can save the log after every interval before "opn.close" instruction? Guide me if I am wrong as I already read the details of "OPEN" in Python manual

Thanks

[Gribouillis]

Use the flush() method. Also your use of writelines is not correct

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import time, datetime    ctr=100    opn = open("paillasse/ecrlog.txt","a+")    while(ctr):     opn.write(str(ctr) + '\n')     opn.flush()     ctr=ctr-1     time.sleep(1)     print(ctr)    opn.close() #close file