pyTypo 0.1 is a prank typo program written in Python. It only works under Windows, where it will run silently in the background upon startup. The program randomly creates four different kinds of mistakes:

• Reversed letters (e.g. "Please join me for lnuch") 50%
• Wrong letters (nearby) (e.g. "Please join me for lumch") 20%
• Missing letters (e.g. "Please join me for luch") 15%
• Extra letters (nearby) (e.g. "Please join me for lunmch") 15%

Settings within the Python script control when the typos are triggered, with the default settings as follows:

time_threshold = 125  # trigger based on fast typing (delays of less than 125ms between characters)
random_percentage = 30  # Don't typo _every_ time we trigger, only about 30% of the time.
resume_timeout = 17000  # After a typo, wait 17 seconds before allowing another one.

Although Python 3.6.7 is referenced by the installation script, you can modify the version as needed. Typically, a silent installation can be triggered as follows: python-3.6.7.exe /quiet InstallAllUsers=1 Shortcuts=0 Include_tcltk=0 PrependPath=1 This will install into %ProgramFiles(x86)%\Python36-32

The .whl file is included, and can be installed with this command: pip install pyHook-1.5.1-cp36-cp36m-win32.whl

The .whl file is included, and can be installed with either of these commands: pip install pywin32 (gets it from the main repo) pip install pywin32-224-cp36-cp36m-win32.whl (uses the included file)

Download Python 3.6 (32 bit) from the link above, then copy the contents of the install folder and the tpo.py script to a USB stick. As a user with administrative privileges, run install.bat to install, or upgrade.bat to update the script. The tpo.py script is placed into the %ProgramFiles(x86)%\Python36-32 folder, and is run silently by the current user on startup. Feel free to adjust the installation script as desired!

• Pay attention to the backspace and delete buttons. As they are used more often, scale back the frequency of typos.
• Get worse with more typing, or get worse throughout the day.
• Auto-adjust to the speed of the current typing, using standard deviation to decide where to place the trigger.

Average typing speed is between 38-40 WPM (or 190 - 200 characters per minute). This translates to an average of 300ms between characters, but the maximum speed varies greatly. Average normal accuracy is 8 typos for every 100 words typed, or about 3.2 typos per minute on average.