Reserved Names

Ren'Py reserves filenames that are do not begin with a letter or number, and filenames that begin with "00". Very specifically, filenames that start with "00" and "_" are used by Ren'Py internally.

Ren'Py reserves all names beginning with a single underscore (_). Do not use names beginning with an underscore, as that may cause your game to break in future versions of Ren'Py.

The following is a list of names that are used by Python. Re-using these names can lead to obscure problems.

• ArithmeticError

• AssertionError

• AttributeError

• BaseException

• BlockingIOError

• BrokenPipeError

• BufferError

• BytesWarning

• ChildProcessError

• ConnectionAbortedError

• ConnectionError

• ConnectionRefusedError

• ConnectionResetError

• DeprecationWarning

• EOFError

• Ellipsis

• EncodingWarning

• EnvironmentError

• Exception

• False

• FileExistsError

• FileNotFoundError

• FloatingPointError

• FutureWarning

• GeneratorExit

• IOError

• ImportError

• ImportWarning

• IndentationError

• IndexError

• InterruptedError

• IsADirectoryError

• KeyError

• KeyboardInterrupt

• LookupError

• MemoryError

• ModuleNotFoundError

• NameError

• None

• NoneType

• NotADirectoryError

• NotImplemented

• NotImplementedError

• OSError

• OverflowError

• PPP

• PendingDeprecationWarning

• PermissionError

• ProcessLookupError

• RecursionError

• ReferenceError

• ResourceWarning

• RuntimeError

• RuntimeWarning

• StopAsyncIteration

• StopIteration

• SyntaxError

• SyntaxWarning

• SystemError

• SystemExit

• TabError

• TimeoutError

• True

• TypeError

• UnboundLocalError

• UnicodeDecodeError

• UnicodeEncodeError

• UnicodeError

• UnicodeTranslateError

• UnicodeWarning

• UserWarning

• ValueError

• Warning

• ZeroDivisionError

• abs

• aiter

• all

• anext

• any

• ascii

• bin

• bool

• breakpoint

• bytearray

• bytes

• callable

• chr

• classmethod

• compile

• complex

• copyright

• credits

• delattr

• dict

• dir

• divmod

• enumerate

• eval

• exec

• exit

• filter

• float

• format

• frozenset

• getattr

• globals

• hasattr

• hash

• help

• hex

• id

• input

• int

• isinstance

• issubclass

• iter

• len

• license

• list

• locals

• map

• max

• memoryview

• min

• next

• object

• oct

• open

• ord

• pow

• print

• property

• quit

• range

• repr

• reversed

• round

• set

• setattr

• slice

• sorted

• staticmethod

• str

• sum

• super

• tuple

• type

• vars

• zip

The following is a list of names that are used by Ren'Py. While in some cases it makes sense to redefine these names, one should be aware that doing so can cause obscure problems.

• ADVCharacter

• ADVSpeaker

• Action

• AddToSet()

• Alpha

• AlphaBlend()

• AlphaDissolve()

• AlphaMask

• AnimatedValue()

• Animation

• At()

• Attribute

• AudioData

• AudioPositionValue()

• Bar

• BarValue

• Borders

• BrightnessMatrix

• Button

• Call()

• Camera

• CaptureFocus()

• Character()

• ClearFocus()

• Color

• ColorMatrix

• ColorizeMatrix

• ComposeTransition()

• Composite()

• Condition

• ConditionGroup

• ConditionSwitch()

• Confirm()

• Continue()

• ContrastMatrix

• CopyToClipboard()

• Crop()

• CropMove()

• CurrentScreenName()

• CycleDict()

• CycleField()

• CycleLocalVariable()

• CycleScreenVariable()

• CycleVariable()

• DictEquality

• DictInputValue()

• DictValue()

• DisableAllInputValues()

• Dissolve()

• DownloadSync()

• Drag

• DragGroup

• DynamicCharacter

• DynamicDisplayable

• DynamicImage

• EditFile()

• EndReplay()

• ExecJS()

• FactorZoom

• Fade()

• FieldEquality

• FieldInputValue()

• FieldValue()

• FileAction()

• FileCurrentPage()

• FileCurrentScreenshot

• FileDelete()

• FileJson()

• FileLoad()

• FileLoadable()

• FileNewest()

• FilePage()

• FilePageName()

• FilePageNameInputValue()

• FilePageNext()

• FilePagePrevious()

• FileSave()

• FileSaveName()

• FileScreenshot()

• FileSlotName()

• FileTakeScreenshot()

• FileTime()

• FileUsedSlots()

• Fixed()

• Flatten

• FontGroup

• Frame

• Function()

• Gallery

• GamepadCalibrate()

• GamepadExists()

• GetCharacterVolume()

• GetFocusRect()

• GetMixer()

• GetTooltip()

• Grid()

• HBox()

• Help()

• Hide()

• HideInterface()

• HueMatrix

• IdentityMatrix

• If()

• Image()

• ImageButton

• ImageDissolve()

• ImageReference

• IncrementDict()

• IncrementField()

• IncrementLocalVariable()

• IncrementScreenVariable()

• IncrementVariable()

• Input

• InputValue

• InvertMatrix

• InvertSelected()

• JSONDB

• Jump()

• Language()

• Layer

• LayeredImage

• LayeredImageProxy

• Live2D()

• LiveComposite

• LiveCrop

• LiveTile

• LocalVariableInputValue()

• LocalVariableValue()

• MainMenu()

• Matrix

• MixerValue()

• Model

• Motion

• MouseDisplayable

• MouseMove()

• Move

• MoveFactory

• MoveIn

• MoveOut

• MoveTransition()

• Movie

• MultiPersistent

• MultiRevertable

• MultipleTransition()

• MusicRoom

• NVLCharacter

• NVLSpeaker

• NoRollback

• Notify()

• Null

• NullAction()

• OffsetMatrix

• OldMoveTransition

• OpacityMatrix

• OpenDirectory()

• OpenURL()

• PY2

• Pan

• ParameterizedText

• Particles

• Pause()

• PauseAudio()

• Pixellate()

• Placeholder

• Play

• PlayCharacterVoice()

• Position

• Preference()

• PushMove()

• Queue()

• QueueEvent()

• QuickLoad()

• QuickSave()

• Quit()

• RemoveFromSet()

• Replay()

• RestartStatement()

• Return()

• Revolve

• RevolveInOut

• RollForward()

• Rollback()

• RollbackToIdentifier()

• RotateMatrix

• RotoZoom

• RoundRect

• SaturationMatrix

• ScaleMatrix

• ScreenVariableInputValue()

• ScreenVariableValue()

• Screenshot()

• Scroll()

• SelectedIf()

• SensitiveIf()

• SepiaMatrix()

• Set

• SetCharacterVolume()

• SetDict()

• SetField()

• SetLocalVariable()

• SetMixer()

• SetMute()

• SetScreenVariable()

• SetVariable()

• SetVoiceMute()

• Show()

• ShowMenu()

• ShowTransient()

• ShowingSwitch()

• SideImage()

• SizeZoom

• Skip()

• SlottedNoRollback

• SnowBlossom()

• Solid

• Speaker

• SplineMatrix

• SplineMotion

• Sprite

• SpriteManager

• Start()

• StaticValue()

• Stop

• Style

• StylePreference()

• SubTransition

• Swing()

• Text

• TextButton

• Tile

• TintMatrix

• ToggleDict()

• ToggleField()

• ToggleFocus()

• ToggleLocalVariable()

• ToggleMute()

• ToggleScreen()

• ToggleScreenVariable()

• ToggleSetMembership()

• ToggleVariable()

• ToggleVoiceMute()

• Tooltip

• Transform

• TransformMatrix

• UploadSync()

• VBox()

• VariableInputValue()

• VariableValue()

• Viewport

• VoiceInfo

• VoiceReplay()

• Window

• With()

• XScrollValue()

• YScrollValue()

• Zoom

• ZoomInOut

• absolute()

• absolute_import

• achievement

• adv

• adv_narrator

• alt

• anim

• audio

• basestring

• bchr

• blinds

• bord

• bubble

• build

• center

• centered

• color

• config

• default

• default_transition

• defaultdict

• define

• director

• dissolve

• division

• ease

• easeinbottom

• easeinleft

• easeinright

• easeintop

• easeoutbottom

• easeoutleft

• easeoutright

• easeouttop

• extend

• fade

• gui

• hpunch

• hyperlink_function

• hyperlink_sensitive

• hyperlink_styler

• iap

• icon

• im

• incdir

• irisin

• irisout

• layeredimage

• layout

• left

• library

• main_menu

• menu

• mouse_visible

• move

• moveinbottom

• moveinleft

• moveinright

• moveintop

• moveoutbottom

• moveoutleft

• moveoutright

• moveouttop

• name_only

• narrator

• nvl

• nvl_clear()

• nvl_clear_next

• nvl_erase

• nvl_hide()

• nvl_list

• nvl_menu()

• nvl_narrator

• nvl_show()

• nvl_show_core

• nvl_variant

• nvl_window

• offscreenleft

• offscreenright

• os

• persistent

• pixellate

• position()

• predict_menu

• predict_say

• preferences

• print_function

• pushdown

• pushleft

• pushright

• pushup

• pygame_sdl2

• pystr

• python_dict

• python_list

• python_object

• python_set

• raw_input

• renpy

• renpy_json

• reset

• right

• save_name

• say

• shaderdoc

• slideawaydown

• slideawayleft

• slideawayright

• slideawayup

• slidedown

• slideleft

• slideright

• slideup

• squares

• srcdir

• store

• style

• suppress_overlay

• sv

• swing

• sys

• textshader

• theme

• tobytes

• toggle_skipping

• top

• topleft

• topright

• truecenter

• ui

• unicode

• unicode_literals

• updater

• vcentered

• voice()

• voice_can_replay()

• voice_replay()

• voice_sustain()

• vpunch

• wipedown

• wipeleft

• wiperight

• wipeup

• with_statement

• xrange

• zoomin

• zoominout

• zoomout