The “w+” tells Python that we are writing to a new file. If the file already exists ... In short, each line represents a row in a database and contains a series of values separated by commas.

The problem I've noticed is that if I append the file with each of the 100k runs (one at a time), it can happen that two threads try to save to the file at the same time and some row(s) end up empty.

Since the creation of python reading in files has ... The read function returns everything in the file but you can specify the amount of characters. Also From the output you see “\n” this indicates a ...

So I have a program in Python for use ... 0') by os.write() and nothing is written past that. This becomes apparent when reading from /dev/zero and writing to a file -- the file never grows ...