# Write a Pandas program to create a line plot of the historical stock prices of Alphabet Inc. between two specific dates.  
import pandas as pd
import matplotlib.pyplot as plt
df = pd.read_csv("alphabet_stock_data.csv")
start_date = pd.to_datetime('2020-4-1')
end_date = pd.to_datetime('2020-09-30')                         
df['Date'] = pd.to_datetime(df['Date']) 
new_df = (df['Date']>= start_date) & (df['Date']<= end_date)
df1 = df.loc[new_df]
df2 = df1.set_index('Date')
plt.figure(figsize=(5,5))
plt.suptitle('Stock prices of Alphabet Inc.,\n01-04-2020 to 30-09-2020', \
                 fontsize=18, color='black')
plt.xlabel("Date",fontsize=16, color='black')
plt.ylabel("$ price", fontsize=16, color='black')
 
df2['Close'].plot(color='green');
plt.show()
