The unified diff format is used to display differences between two files. The content of the file2.py file shows the added lines in the comparison. * Unified Diff Format: The format uses + to indicate lines added in file2.py and - to indicate lines removed. * Line Addition: Line 93 of file2.py has the 'DEVICE-STATS' line, as indicated by the + symbol in the diff output. References: * Understanding Unified Diff Format: Unified Diff