Update app.py

app.py

@@ -4,26 +4,33 @@ import numpy as np
 import plotly.express as px
 
 def calculate_present_value(cash_flows, discount_rate):
-    years = np.arange(1, len(cash_flows) + 1)
+    years = np.arange(1, len(cash_flows)+1)
     present_values = cash_flows / (1 + discount_rate) ** years
     return np.sum(present_values)
 
-#inputs de cashflows 
-a = st.number_input("años", step=1)
-cf_list=[0]*(n>1)
-cf_dict=pd.DataFrame(("cashflows": cf_list)).astype(int)
-cf_df=st.data_editor(cf_dict.T)
+st.title('PV calc')
 
-cashflows = np.array(cf_df.values[0])
+# Input cash flows
+st.subheader('Ingresar los Cash Flows 10 años:')
+cash_flows = []
+for i in range(1, 11):
+    cash_flow = st.number_input(f"Cash Flow para el Año {i}:", value=10000.0, step=1000.0, format="%.2f")
+    cash_flows.append(cash_flow)
 
-# Input del usuario para la tasa de descuento
+# tasa
 discount_rate = st.number_input('Ingrese la tasa de descuento (ejemplo: 0.05 para 5%):', value=0.05, step=0.01, format="%.2f")
 
-# Botón para calcular el valor presente
 if st.button('Calcular Valor Presente'):
+    cash_flows = np.array(cash_flows)
     pv = calculate_present_value(cash_flows, discount_rate)
-    st.write(f"El valor presente calculado es: ${pv:,.2f}")
+    st.success(f"El valor presente calculado es: ${pv:,.2f}")
 
-    # Gráfico
-    fig = px.scatter(st.session_state.cash_flows, x='Año', y='Cash Flow', title="Cash Flows vs. Tiempo", labels={'Cash Flow': 'Cash Flow ($)', 'Año': 'Año'})
+
+    df = pd.DataFrame({
+        'Año': np.arange(1, 11),
+        'Cash Flow': cash_flows
+    })
+
+
+    fig = px.scatter(df, x='Año', y='Cash Flow', title="Cash Flows vs. Tiempo", labels={'Cash Flow': 'Cash Flow ($)', 'Año': 'Año'})
     st.plotly_chart(fig)