gistfile1.py

import matplotlib.pyplot as plt
plt.ion()

file_open = open('comicsSold.txt', 'r')
file_read = file_open.read()

years = []
sold = []

file_split = file_read.splitlines()

for line in file_split:
	year = line.split(',')[0]
	num = line.split(',')[1]
	years.append(year)
	sold.append(num)

first_year = years[0]
last_year = years[-1]

x = range(int(first_year), int(last_year)+1)

plt.plot(x, sold)
plt.show()