# Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022-2026)

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

import time

import streamlit as st

# st.session_state can only be accessed while running with streamlit

if "counter" not in st.session_state:

st.session_state.counter = 0

st.session_state.slow_operations_attempted = 0

if st.button("click me!"):

st.session_state.counter += 1

if st.checkbox("do something slow"):

st.session_state.slow_operations_attempted += 1

time.sleep(5)

st.write(f"count: {st.session_state.counter}")

st.write(f"slow operations attempted: {st.session_state.slow_operations_attempted}")

if f := st.file_uploader("Upload a file"):

st.text(f.read())

if img := st.camera_input("Take a picture"):

st.image(img)