app.py

import solara

# Declare reactive variables at the top level. Components using these variables
# will be re-executed when their values change.
sentence = solara.reactive("Solara makes our team more productive.")
word_limit = solara.reactive(10)

@solara.component
def Page():
    with solara.Column(margin=10):
	    solara.Markdown("#Solara Template")
	    # Calculate word_count within the component to ensure re-execution when reactive variables change.
	    word_count = len(sentence.value.split())
	
	    solara.SliderInt("Word limit", value=word_limit, min=2, max=20)
	    solara.InputText(label="Your sentence", value=sentence, continuous_update=True)
	
	    # Display messages based on the current word count and word limit.
	    if word_count >= int(word_limit.value):
	        solara.Error(f"With {word_count} words, you passed the word limit of {word_limit.value}.")
	    elif word_count >= int(0.8 * word_limit.value):
	        solara.Warning(f"With {word_count} words, you are close to the word limit of {word_limit.value}.")
	    else:
	        solara.Success("Great short writing!")


# The following line is required only when running the code in a Jupyter notebook:
Page()