I cannot seem to be able to find the setting to enable line numbers for all files, but I have to always right click and enable this on per file basis.
There mu
Version 2.6 and above:
PyCharm (far left menu) -> Preferences... -> Editor (bottom left section) -> General -> Appearance -> Show line numbers checkbox
Version 2.5 and below:
Settings -> Editor -> General -> Appearance -> Show line numbers checkbox
For version 3.0 (Community Edition):
File -> Settings -> Editor (under IDE Settings) -> Appearance -> check 'Show line numbers'
For version 2.6 and up, the dialog is in the "Preferences" dialog, access using Cmd ',':
PyCharm (far left menu) -> Preferences... -> Editor (bottom left section) -> Appearance -> Show line numbers checkbox
Using Search bar
Shift
/editor /appearance/
and thenShow line numbers
toggle buttonFor Windows and Linux
File | Settings | Editor | General | Appearance
For macOS
IntelliJ IDEA | Preferences | Editor | General | Appearance
Using shortcut
Ctrl+Alt+S
Then
Editor > General > Appearance
Click on Show line numbers toggle button.
Pycharm Official Doc (Appearance)
For version 4.0, 4.5 on Windows
File -> Settings
Then,
Editor -> General -> Appearance -> Show line numbers
For version 4.0 on Mac OSX
PyCharm-->Preferences
Then,
Editor-->General-->Appearance-->checkbox: "Show line numbers"
v. community 5.0.4 (linux): File -> Settings -> Editor -> General -> Appearance -> now check 'Show line numbers', confirm w. OK an voila :)