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import streamlit as st
import os
from langchain_huggingface import HuggingFaceEndpoint, ChatHuggingFace
from langchain_core.messages import HumanMessage, SystemMessage
hf = os.getenv('HF_TOKEN')
os.environ['HUGGINGFACEHUB_API_TOKEN'] = hf
os.environ['HF_TOKEN'] = hf
# Page config
st.set_page_config(page_title="Python Mentor Chat", layout="centered")
# Inject home page CSS style
# st.markdown("""
# <style>
# .main {
# background: linear-gradient(135deg, #430089 0%, #82ffa1 100%);
# padding: 2rem;
# font-family: 'Segoe UI', sans-serif;
# }
# .stButton>button {
# background: #ffffff10;
# border: 2px solid #ffffff50;
# color: white;
# font-size: 18px;
# font-weight: 600;
# padding: 0.8em 1.2em;
# border-radius: 12px;
# width: 100%;
# transition: 0.3s ease;
# box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
# }
# .stButton>button:hover {
# background: #ffffff30;
# border-color: #fff;
# color: #ffffff;
# }
# h1, h3, p, label {
# color: #ffffff;
# text-align: center;
# }
# hr {
# border: 1px solid #ffffff50;
# margin: 2em 0;
# }
# .css-1aumxhk {
# color: white;
# }
# </style>
# """, unsafe_allow_html=True)
st.markdown("""
<style>
.main {
background: linear-gradient(to right, #1f4037, #99f2c8);
padding: 2rem;
font-family: 'Segoe UI', sans-serif;
}
.stButton>button {
background-color: #ffffff10;
color: white;
font-weight: 600;
border-radius: 10px;
padding: 0.6rem 1rem;
transition: all 0.3s ease;
border: 1px solid white;
}
.stButton>button:hover {
background-color: #ffffff30;
color: white;
border-color: #fff;
}
h1, h3, p, label {
color: white;
text-align: center;
}
.chat-bubble-user {
background-color: #ffffff25;
padding: 0.75rem 1rem;
border-radius: 1rem;
margin-bottom: 0.5rem;
color: #fff;
font-weight: 500;
text-align: left;
width: fit-content;
max-width: 90%;
align-self: flex-end;
}
.chat-bubble-bot {
background-color: #ffffff15;
padding: 0.75rem 1rem;
border-radius: 1rem;
margin-bottom: 0.5rem;
color: #fff;
text-align: left;
width: fit-content;
max-width: 90%;
align-self: flex-start;
}
.chat-container {
display: flex;
flex-direction: column;
gap: 0.5rem;
margin-top: 2rem;
}
</style>
""", unsafe_allow_html=True)
# Page title
# Title
st.title("🐍 Python Mentor Chat")
# Sidebar
st.sidebar.title("Mentor Preferences")
experience_label = st.sidebar.selectbox(
"Select your experience level:", ["Beginner", "Intermediate", "Experienced"]
)
# Initialize model
deep_seek_skeleton = HuggingFaceEndpoint(
repo_id='mistralai/Mistral-7B-Instruct-v0.3',
provider='novita',
temperature=0.7,
max_new_tokens=50,
task='conversational'
)
deep_seek = ChatHuggingFace(
llm=deep_seek_skeleton,
repo_id='mistralai/Mistral-7B-Instruct-v0.3',
provider='novita',
temperature=0.7,
max_new_tokens=150,
task='conversational'
)
PAGE_KEY = "python_chat_history"
if PAGE_KEY not in st.session_state:
st.session_state[PAGE_KEY] = []
# Chat input form
with st.form(key="chat_form"):
user_input = st.text_input("Ask your question:")
submit = st.form_submit_button("Send")
# Chat logic
if submit and user_input:
# system_prompt = (
# f"Act as a python mentor with {experience_label.lower()} experience. "
# f"Teach in a friendly manner and keep answers within 150 words. "
# f"If a question is not about python, politely mention it's out of scope."
# )
system_prompt = f"""Act as a Python mentor with {experience_label} years of experience. Teach in a friendly, approachable manner while following these strict rules:
1. Only answer questions related to Python programming (including libraries, frameworks, and tools in the Python ecosystem)
2. For any non-Python query, respond with exactly: "I specialize only in Python programming. This appears to be a non-Python topic."
3. Never suggest you can help with non-Python topics
4. Keep explanations clear, practical, and beginner-friendly when appropriate
5. Include practical examples when explaining concepts
6. For advanced topics, assume the student has basic Python knowledge"""
messages = [SystemMessage(content=system_prompt), HumanMessage(content=user_input)]
result = deep_seek.invoke(messages)
st.session_state[PAGE_KEY].append((user_input, result.content))
# Chat history
st.subheader("🗨️ Chat History")
# for user, bot in st.session_state[PAGE_KEY]:
# st.markdown(f"**You:** {user}")
# st.markdown(f"**Mentor:** {bot}")
# st.markdown("---")
if st.session_state[PAGE_KEY]:
st.markdown('<div class="chat-container">', unsafe_allow_html=True)
for user, bot in st.session_state[PAGE_KEY]:
st.markdown(f'<div class="chat-bubble-user">👤 <strong>You:</strong> {user}</div>', unsafe_allow_html=True)
st.markdown(f'<div class="chat-bubble-bot">🧑🏫 <strong>Mentor:</strong> {bot}</div>', unsafe_allow_html=True)
st.markdown('</div>', unsafe_allow_html=True)
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