playground_app.py

import os
import pathlib

import streamlit as st

from streamlit_pydantic.ui_renderer import _name_to_title

st.set_page_config(page_title="Streamlit Pydantic Playground", page_icon=":magic_wand:")
st.title("Streamlit Pydantic - Playground")

BADGES = """
<a href="https://gitHub.com/lukasmasuch/streamlit-pydantic" title="Star Repo" target="_blank"><img src="https://img.shields.io/github/stars/lukasmasuch/streamlit-pydantic.svg?logo=github&style=social"></a>
"""
st.markdown(BADGES, unsafe_allow_html=True)

st.markdown(
    "Streamlit-pydantic makes it easy to auto-generate UI elements from Pydantic models. Just define your data model and turn it into a full-fledged UI form. "
    + " You can explore some examples below 👇"
)

DEFAULT_DEMO = "simple_form.py"

path_of_script = pathlib.Path(__file__).parent.resolve()
path_to_examples = pathlib.Path(path_of_script).parent.joinpath("examples").resolve()

demos = []
for example_file in os.listdir(path_to_examples):
    file_path = path_to_examples.joinpath(example_file).resolve()

    if not file_path.is_file():
        continue

    demos.append(example_file)

title_to_demo = {}

demo_titles = []
default_index = 0
for i, demo in enumerate(demos):
    if demo == DEFAULT_DEMO:
        # Use hello world as default
        default_index = i
    demo_title = _name_to_title(demo.replace(".py", ""))
    title_to_demo[demo_title] = demo
    demo_titles.append(demo_title)

selected_demo_title = st.selectbox(
    "Select Demo", options=demo_titles, index=default_index
)
selected_demo = title_to_demo[selected_demo_title]

with st.expander("Source Code", expanded=False):
    with open(path_to_examples.joinpath(selected_demo), encoding="UTF-8") as f:
        st.code(f.read(), language="python")

exec(open(path_to_examples.joinpath(selected_demo)).read())