2to3-3.3 − Python2 to Python3 converter
2to3 [options] file|dir ...
−h, −−help
show this help message and exit
−d, −−doctests_only
Fix up doctests only
−f FIX, −−fix=FIX
Each FIX specifies a transformation; default: all
−j PROCESSES, −−processes=PROCESSES
Run 2to3 concurrently
−x NOFIX, −−nofix=NOFIX
Prevent a transformation from being run
−l, −−list−fixes
List available transformations
−p, −−print−function
Modify the grammar so that print() is a function
−v, −−verbose
More verbose logging
−−no−diffs
Don’t show diffs of the refactoring
−w, −−write
Write back modified files
−n, −−nobackups
Don’t write backups for modified files