Unreal 5 ResavePackages python script example

gistfile1.txt

import Unreal

args = [
    # Run the specific commandlet
    "-run=ResavePackages",
    "-Replace",  # Save the asset once fixed up
    
    # Don't show UI
    "-NoPause", # Prevents waiting for key presses
    "-NoIntro", # Skip intro movies (just in-case)
    "-NoSplash", # Don't show the Splash screen
    "-Unattended", # Remove UI prompts
    
    # Yes it is ResaveClass, not ResaveClasses, it accepts a comma terminated list, i.e. Blueprint,Actor
    #"-ResaveClass=Blueprint",

    # Ignore unversioned files (this does not mean source control versioning)
    "-IgnoreChangelist",
    "-Unversioned", # Ignore asset version mismatches
    
    # Specify which packages we want to consider
    "-ProjectOnly",
    #"-IgnoreEngine",
    "-IgnoreMap",
    # '-Package="/Game/Core/"',
    
    #"-DisablePlugin=Wwise,WwiseNiagara,WwiseSoundEngine", # Disable Wwise for now
    
    "-VERIFY", # Show which packages aren't being written because they are read-only
    "-SKIPFAILS",
    "-ForceResave", # ?
    #"-FixupRedirects",
    "-AllowReadOnly", # Resave files which are read-only, i.e. P4 will mark files as read-only so we need this
    "-IgnoreErrors", # Don't early out due to errors being logged (i.e. Wwise)
    
    # Performance
    "-GCFREQ=100", # Reduce frequency of GC (how many packages until it cleans up), can speed up the commandlet
    "-NoShaderCompile",  # Don't compile shaders
    
    # Perforce settings
    "-AutoCheckOut", # Checkout files in P4 before saving
    #"-BatchSourceControl", # Batch checkout
    "-SkipCheckedOutPackages", # Don't error out on checked out files
    
    # Loading settings - This is slower, but it will prevent some crashes we run into when async loading
    "-NoZenLoader",
    "-NoAsyncLoadingThread",
    
    # Log
    "-log=ResavePackages.txt",
]

Unreal.run_unreal(args, verbose=True)