Update app.py

app.py

@@ -132,7 +132,7 @@ st.subheader("Sample Space")
 st.markdown("""Set of all possible outcome of Sample Space..""")
 st.title("Example of Sample Space")
 Trail_1 = st.number_input("Number of Trials:", min_value=1, max_value=100, value=7,key="Trail_1")
-if st.button('Start the Experiment: Will it Rain or Not?',key="start_experiment):
+if st.button('Start the Experiment: Will it Rain or Not?',key="start_experiment"):
     st.write(f"Running {Trail_1} trials...")
     list1=[]
     for i in range(1, Trail_1 + 1):