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When I open a text file and write in it and at the end of the program close it, the lines stay in the text file. When i reopen that program, rather than writing on a new set of lines, it overwrites what is already there. I want to keep both pieces of text, it is for data logging. Any ideas on how to fix this.

Lachlan.C
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  • Open the file in append mode. See: http://stackoverflow.com/questions/4706499/how-do-you-append-to-a-file-in-python – anujm May 28 '16 at 11:25

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You should use the a mode, like this:

with open("file","a") as f:
    f.write("Something")

This will append to the file instead of overwriting it.

noteness
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