This post explains how to write to a file in Python. You'll discover how to create word files (.docx), spreadsheets (.csv), text files, and more!

In addition to that, we’re going to add a new line option (to add a carriage return), so after the final input, the next file.write will start on a new line. This is done with: file.write(input2 ...

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.

However, those methods can cause problems if you read from a particularly large file. Python happily will read as much as it can into a huge string, potentially using all (or most) of the memory on ...

These commands also are reading line by line, which means these functions can scale to files that are large in size, and they are very quick. When some heavy-lifting is needed in the chain, a very ...