app.py

import streamlit as st
import random

# Define the moves
moves = ["Rock", "Paper", "Scissors"]

# Function to determine the winner
def determine_winner(player_move, computer_move):
    if player_move == computer_move:
        return "It's a tie!"
    elif (player_move == "Rock" and computer_move == "Scissors") or \
         (player_move == "Paper" and computer_move == "Rock") or \
         (player_move == "Scissors" and computer_move == "Paper"):
        return "You win!"
    else:
        return "You lose!"

# Streamlit app
st.title("Rock, Paper, Scissors")

st.write("Choose your move:")

# Create three horizontal buttons
col1, col2, col3 = st.columns(3)

with col1:
    if st.button("Rock"):
        player_move = "Rock"
with col2:
    if st.button("Paper"):
        player_move = "Paper"
with col3:
    if st.button("Scissors"):
        player_move = "Scissors"

# Ensure player_move is defined
if 'player_move' not in st.session_state:
    st.session_state.player_move = None

# Assign player move to session state if a move is made
if 'player_move' in locals():
    st.session_state.player_move = player_move

# If a move is selected, randomly choose a move for the computer and determine the result
if st.session_state.player_move:
    player_move = st.session_state.player_move
    computer_move = random.choice(moves)
    
    # Display player and computer moves
    col1, col2 = st.columns(2)
    with col1:
        st.write("Your move:")
        st.subheader(player_move)
    with col2:
        st.write("Computer's move:")
        st.subheader(computer_move)
    
    # Display result
    result = determine_winner(player_move, computer_move)
    st.write("Result:")
    st.subheader(result)