"""
Reading files in Python
"""

# in order to read from a file you first need to open it:

file_handle = open('numbers.txt')

# you can obtain the next line in the file using its readline method
line = file_handle.readline()

file_handle = open('numbers.txt')
for line in file_handle :
    print line

# once we're done with a file we close it:
file_handle.close()

# It is a good idea to check whether a file exists before attempting
# to open it:
import os
os.path.exists('numbers.txt')

# now let's extract the numbers in the file into a list:

numbers = []
file_handle = open('numbers.txt')
for line in file_handle :
    numbers += [int(line)]