Autocompletion

param-lsp offers context-aware autocompletion for Param classes, parameters, and decorators.

Parameter Constructor Completion

When creating instances of Parameterized classes, param-lsp provides intelligent parameter name completion:

ScreenshotCode

Autocompletion dropdown showing parameter suggestions for MyClass constructor

import param

class MyClass(param.Parameterized):
    width = param.Integer(default=100, bounds=(1, 1000))
    height = param.Integer(default=50, bounds=(1, 1000))
    title = param.String(default="Widget")

# Type 'MyClass(' and see parameter completions
instance = MyClass(
    w  # <- Autocompletion suggests 'width'
    # Completion shows: width, height, title
)

What you'll see:

• Immediate parameter name suggestions as you type
• Parameter type information in completion details
• Default values and bounds shown in completion documentation

@param.depends Completion

Smart completion for dependency decorators:

ScreenshotCode

Parameter name completions within @param.depends decorator strings

import pandas as pd
import param

class DataProcessor(param.Parameterized):
    input_file = param.String(default="data.csv")

    @param.depends('inp  # <- Completes to 'input_file'
    def process_data(self):
        return pd.read_csv(self.input_file)

Features:

• Parameter name completion within dependency strings
• Multiple parameter dependency support
• Validation of parameter names
• Cross-object dependency completion

Inheritance-Aware Completion

Autocompletion includes parameters from parent classes:

ScreenshotCode

Autocompletion showing both inherited and local parameters for Button class

import param

class BaseWidget(param.Parameterized):
    width = param.Integer(default=100)
    height = param.Integer(default=50)

class Button(BaseWidget):
    text = param.String(default="Click me")
    disabled = param.Boolean(default=False)

# Completion includes inherited parameters
button = Button(
    width=200,    # From BaseWidget
    text="Submit", # From Button
    # All available: width, height, text, disabled
)

External Library Support

param-lsp provides intelligent completion for other HoloViz libraries, Panel and HoloViews.

import panel as pn

# param-lsp knows Panel
slider = pn.widgets.IntSlider(
    value=50,  # <- Autocompletion knows IntSlider parameters
    start=0,  # <- Parameter bounds checking
    end=100,  # <- Type validation
    step=5,  # <- Hover shows parameter documentation
)