Create app.py

app.py

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+import streamlit as st
+import time
+import pytz
+from datetime import datetime, timedelta
+
+# Helper Functions
+def get_timezones():
+    return ['UTC', 'US/Eastern', 'Europe/London', 'Asia/Kolkata', 'Asia/Tokyo', 'Australia/Sydney']
+
+def format_time(seconds):
+    mins, secs = divmod(seconds, 60)
+    hours, mins = divmod(mins, 60)
+    return f"{int(hours):02d}:{int(mins):02d}:{int(secs):02d}"
+
+# Streamlit App
+st.set_page_config(page_title="Clock App", page_icon="🕰️", layout="centered")
+st.title("🕰️ Clock Application")
+
+menu = st.sidebar.radio("Select Function", ("World Clock", "Alarm Clock", "Stopwatch", "Timer"))
+
+# --- World Clock --- #
+if menu == "World Clock":
+    st.header("🌎 World Clock")
+    selected_timezones = st.multiselect("Choose timezones", get_timezones(), default=['UTC'])
+    
+    placeholder = st.empty()
+    while True:
+        with placeholder.container():
+            for tz in selected_timezones:
+                timezone = pytz.timezone(tz)
+                time_now = datetime.now(timezone).strftime("%Y-%m-%d %H:%M:%S")
+                st.write(f"**{tz}**: {time_now}")
+        time.sleep(1)
+        placeholder.empty()
+
+# --- Alarm Clock --- #
+elif menu == "Alarm Clock":
+    st.header("⏰ Alarm Clock")
+    alarm_time = st.time_input("Set Alarm Time")
+    alarm_set = st.button("Set Alarm")
+    
+    if alarm_set:
+        st.success(f"Alarm is set for {alarm_time}!")
+        while True:
+            now = datetime.now().time()
+            if (now.hour, now.minute) == (alarm_time.hour, alarm_time.minute):
+                st.balloons()
+                st.success("⏰ It's Time!")
+                break
+            time.sleep(20)
+
+# --- Stopwatch --- #
+elif menu == "Stopwatch":
+    st.header("⏱️ Stopwatch")
+    
+    if "stopwatch_running" not in st.session_state:
+        st.session_state.stopwatch_running = False
+        st.session_state.start_time = None
+        st.session_state.elapsed = 0
+
+    col1, col2, col3 = st.columns(3)
+    
+    with col1:
+        if st.button("Start"):
+            if not st.session_state.stopwatch_running:
+                st.session_state.start_time = time.time() - st.session_state.elapsed
+                st.session_state.stopwatch_running = True
+
+    with col2:
+        if st.button("Pause"):
+            if st.session_state.stopwatch_running:
+                st.session_state.elapsed = time.time() - st.session_state.start_time
+                st.session_state.stopwatch_running = False
+
+    with col3:
+        if st.button("Reset"):
+            st.session_state.start_time = None
+            st.session_state.elapsed = 0
+            st.session_state.stopwatch_running = False
+
+    st.subheader("Elapsed Time")
+    placeholder = st.empty()
+
+    while st.session_state.stopwatch_running:
+        elapsed = time.time() - st.session_state.start_time
+        placeholder.subheader(format_time(elapsed))
+        time.sleep(0.1)
+    else:
+        placeholder.subheader(format_time(st.session_state.elapsed))
+
+# --- Timer --- #
+elif menu == "Timer":
+    st.header("⏲️ Timer")
+    
+    minutes = st.number_input("Set Timer (minutes)", min_value=0, max_value=120, value=1)
+    start_timer = st.button("Start Timer")
+
+    if start_timer:
+        total_seconds = minutes * 60
+        placeholder = st.empty()
+
+        for remaining in range(total_seconds, -1, -1):
+            placeholder.subheader(format_time(remaining))
+            time.sleep(1)
+        st.balloons()
+        st.success("⏳ Time's up!")