Tuning PyCharm
In this part:
- Tuning PyCharm
- File 'idea.properties'
Changing PyCharm properties
PyCharm makes it possible to change *.vmoptions
and idea.properties
files without editing them in the PyCharm installation folder.
To create an empty idea.properties
file or to copy *.vmoptions
file, choose the or on the main menu respectively. Refer to the menu items description for details.
Managing *.vmoptions file
The location of the *.vmoptions
file depends on the operating system you are currently using:
- For Windows:
<PyCharm installation folder>/bin/pycharm.exe.vmoptions
or<PyCharm installation folder>/bin/pycharm64.exe.vmoptions
- For *NIX:
<PyCharm installation folder>/bin/pycharm.vmoptions
or<PyCharm installation folder>/bin/pycharm64.vmoptions
- For macOS, you need to make a copy of the
pycharm.vmoptions
file in the IDE preferences folder and then edit this copy. The reason is that the app bundle is signed and you should not modify any files inside the bundle.
For older versions, the settings are stored in
/Applications/PyCharm <version>.app/Contents/Info.plist
.
To avoid editing files in the PyCharm installation folder, do one of the following:
- From the main menu, choose to create a copy of the
pycharm.vmoptions
file in the user home directory. Refer to Edit Custom VM Options for details. - Copy the existing file from the PyCharm installation folder somewhere and save the path to this location in the
PYCHARM_VM_OPTIONS
environment variable (IDEA64_VM_OPTIONS
for 64 bit systems) . - Copy the existing
<PyCharm installation folder>/bin/pycharm.exe.vmoptions
or the<PyCharm installation folder>/bin/pycharm64.exe.vmoptions
file from the PyCharm installation folder into your user home directory.
Then edit this file in the new location.
If the PYCHARM_VM_OPTIONS
(IDEA64_VM_OPTIONS
for 64 bit systems) environment variable is defined, or the *.vmoptions
file exists, this file is used instead of the one located in the PyCharm installation folder.
Example: Increasing the heap size
To increase PyCharm heap size, you should copy the original pycharm.vmoptions
file to the above-mentioned location, and then modify the -Xmx
setting.
Managing idea.properties file
The idea.properties
file located in the bin
directory of the PyCharm installation folder should not be edited. Instead of editing the original idea.properties
file, create an idea.properties
file in the following location, open it for editing and add the required properties:
- For Windows:
%USERPROFILE%\.PyCharm XX
- For *NIX:
~/.PyCharm XX
- For macOS:
~/Library/Preferences/PyCharm XX
Example: Changing case of unicode literals
PyCharm allows defining whether non-ascii characters should use literals like '\u00AB'
or '\00ab'
.
This behavior is controlled by the system property idea.native2ascii.lowercase
. By default, upper case characters are used.
If it is desirable to use lower case characters, create the file idea.properties
in the location specified above, open it for editing and add the following line:
idea.native2ascii.lowercase=true
Specifying custom JDK, properties or vmoptions files across platforms
A custom JDK, *.properties
and *.vmoptions
files are specified across platforms in a unified way.
All the launchers look at the following environment variables: