added comments

Author: ishitagupta8720

ReadFromCSV.py

@@ -1,15 +1,15 @@
 __author__ = 'vamsi'
-import pandas as pd
-from matplotlib import pyplot as plt
+import pandas as pd #pandas library to read csv file
+from matplotlib import pyplot as plt #matplotlib library to visualise the data
 from matplotlib import style
 
 style.use("ggplot")
 
 """reading data from SalesData.csv file
     and passing data to dataframe"""
 
-df = pd.read_csv("C:\\Users\Test\Desktop\SalesData.csv")
-x = df["SalesID"].as_matrix()  # casting SalesID to list
+df = pd.read_csv("C:\\Users\Test\Desktop\SalesData.csv")  #Reading the csv file
+x = df["SalesID"].as_matrix()  # casting SalesID to list #extracting the column with name SalesID
 y = df["ProductPrice"].as_matrix()  # casting ProductPrice to list
 plt.xlabel("SalesID")  # assigning X-axis label
 plt.ylabel("ProductPrice")  # assigning Y-axis label