Using Live Templates in TODO Comments
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Let's explore an advanced PyCharm's facility to create a live template for the TODO items' text. Why do we need it at all? For example, you want your team mates to create unified TODO items, with the user name automatically filled in, followed by some arbitrary text.
This is how it's done.
Creating TODO pattern and filter
Open the Settings/Preferences dialog, and under the Editor section, click TODO.
review. To do that, click in the
Define color in the Color Picker - in this case, it's pink.
Next, let's create a filter. To do that, click in the Filters section, and define the filter:
Creating live template and variables
Next, back in the Settings/Preferences dialog, under the Editor section, click Live Templates.
Note that the new template is added to the automatically created group
Next, pay attention to the red note at the bottom. It says that the new template lacks context, where it should apply. So let's click the link Define, and allow all possible contexts. And finally, let's define the body of the template itself: in the area Template text, type the following:
We have two undefined variables here:
$TEXT$. The variable
will be used just as an input field, while the variable
$WHO$ should be filled in automatically.
To define this variable, click the button Edit variables:
Next, in the Edit Template Variables dialog box, select an expression for the variable
Using the REVIEW items
Now let's make sure it works. Back in the editor, create a line comment (Ctrl+Slash),
rv, and press
Note that a right-gutter stripe next to the TODO comment is also added to the editor. As you see, the live
rv has automatically populated the user name, leaving us with the task of just entering
some meaningful comment: