cpython/Tools/idle/help.txt

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[See end for tips.]
Click on the dotted line at the top of a menu to "tear it off": a
separate window containing the menu is created.
File menu:
(This should speak for itself.)
Edit menu:
Undo -- Undo last change to current window (max 1000 changes)
Redo -- Redo last undone change to current window
---
Cut -- Copy selection into system-wide clipboard; then delete selection
Copy -- Copy selection into system-wide clipboard
Paste -- Insert system-wide clipboard into window
Select All -- Select the entire contents of the edit buffer
---
Find... -- Open a search dialog box with many options
Find again -- Repeat last search
Find selection -- Search for the string in the selection
Find in Files... -- Open a search dialog box for searching files
Replace... -- Open a search-and-replace dialog box
Go to line -- Ask for a line number and show that line
---
Indent region -- Shift selected lines right 4 spaces
Dedent region -- Shift selected lines left 4 spaces
Comment out region -- Insert ## in front of selected lines
Uncomment region -- Remove leading # or ## from selected lines
Tabify region -- Turns *leading* stretches of spaces into tabs
Untabify region -- Turn *all* tabs into the right number of spaces
Expand word -- Expand the word you have typed to match another
word in the same buffer; repeat to get a different expansion
Format Paragraph -- Reformat the current blank-line-separated paragraph
---
Run module -- Import or reload the current module
Debug module -- Ditto, under debugger control
Windows menu:
Zoom Height -- toggles the window between normal size (24x80)
and maximum height.
---
The rest of this menu lists the names of all open windows;
select one to bring it to the foreground (deiconifying it if
necessary).
Debug menu (in the Python Shell window only):
Go to file/line -- look around the insert point for a filename
and linenumber, open the file, and show the line
Open stack viewer -- show the stack traceback of the last exception
Debugger toggle -- Run commands in the shell under the debugger
JIT Stack viewer toggle -- Open stack viewer on traceback
Basic editing and navigation:
Backspace deletes to the left; DEL deletes to the right
Arrow keys and Page Up/Down to move around
Home/End go to begin/end of line
Control-Home/End go to begin/end of file
Some Emacs bindings may also work, e.g. ^B/^P/^A/^E/^D/^L
Automatic indentation:
After a block-opening statement, the next line is indented by
4 spaces (in the Python Shell window by one tab). In leading
indentation, Backspace deletes 4 spaces if they are there.
Also see the indent/dedent region commands.
Python Shell window:
^C interrupts executing command
^D sends end-of-file; closes window if typed at >>> prompt
Command history:
Alt-p retrieves previous command matching what you have typed
Alt-n retrieves next
Return while on any previous command retrieves that command
Alt-/ (Expand word) is also useful here
Python syntax colors: the coloring is applied in the background.
Keywords orange
Strings green
Comments red
Definitions blue
Shell colors:
Console output brown
stdout blue
stderr dark green
stdin black
Tips:
To change the font on Windows, open EditorWindow.py and change
text['font'] = ("verdana", 8)
to, e.g.,
text['font'] = ("courier new", 10)
To change the Python syntax colors, edit the tagdefs table in
ColorDelegator.py; to change the shell colors, edit the tagdefs
table in PyShell.py.