PyCharm 2024.1 Help

Variables

The Variables pane of the Threads&Variables tab enables you to examine the values stored in the objects of your application.

Variables pane

When a stack frame is selected in the Frames pane, the Variables pane displays all data within its scope (method parameters, local and instance variables). In this pane, you can set labels for objects, inspect objects, evaluate expressions, add variables to watches and more.

Evaluate expression field

This field appears in the Variables pane only when the Watches pane is hidden so the configured watches are displayed in the Variables pane.

  1. To evaluate an arbitrary expression, enter it in the Evaluate expression field in the Variables pane and press Enter

  2. The result is displayed right below. You can also add the expression to watches by clicking in the right-hand part of the expression field.

    Result of an expression in the Variables tab

Item

Shortcut

Description

New Watch

Choose this command to create a new watch. A text field opens, where you can enter new watch expression.

Remove Watch

Delete

Choose this command to delete the currently selected watch expression from the list.

Edit

F2

Choose this command to change the selected watch expression.

Remove All Watches

Choose this command to delete all watch expressions from the list.

Customize Data View

Add a custom type renderer.

Inspect

This command is available for fields, local variables and reference expressions, and opens a non-modal Inspection window, where you can concentrate on a particular reference. You can open as many Inspection windows as required. The view in the Inspection window is the same as in the Watches pane, but requires less screen space.

Set Value

F2

Use this command to change the runtime value of a field or a variable.

Copy Value

Ctrl+C

Use this command to copy the value of the selected variable to the Clipboard. If multiple items are selected, not only variables' values, but also their structure is copied, so that when you copy-paste the selection to a text file, the indentation mimics the tree output of the debugger to produce an easy-to-read output.

Alternatively, hover over a value and view its contents in the tooltip.

Copy JSON

This menu item is available only in the JavaScript context. Choose this command to copy the selected value in the JSON format.

Compare Value with Clipboard

Use this command to compare the selected value with the value currently in the Clipboard.

Copy Name

Use this command to copy the name of the selected variable to the Clipboard.

Evaluate Expression

Alt+F8

Use this command to evaluate the selected variable in the dialog that opens.

Add to Watches

This command is available for all nodes except static ones. Use this command to create an expression that references the node and add this expression to the Watches pane.

Show Referring Objects

Use this command to display a list of objects referring to the currently selected variable.

Jump to Source

F4

This command opens the source code of the selected variable or field in the editor and places the caret at the corresponding line.

Jump to Type Source

F4

Use this command to navigate to the definition of the class of the selected variable or field.

View as

Use this command to select how you want variable values to be displayed. For integer values, you can choose between binary, decimal, and hexadecimal formats.

  • Hex: this option is available for numeric variables. If selected, the variable is shown in the hexadecimal format.

  • Binary: this option is available for binary data. If selected, the variable is shown as a binary literal.

View as Array

This command is available for variables that represent NumPy arrays.

Note that NumPy must be installed in your Python interpreter.

You can also click the View as Array link next to the variable.

View as DataFrame

This command is available for variables that represent pandas data frames.

Note that pandas must be installed in your Python interpreter.

You can also click the View as DataFrame link next to the variable .

Variable types

Different types of variables in the Debug tool window

The icon on the left of each variable indicates its type:

  • array: array

  • primitive: primitive

  • value: object

  • array: array

  • primitive: primitive

  • value: object

Last modified: 11 February 2024