1numbers = []
2
3#Open the file
4with open('file.txt') as fp:
5    #Iterate through each line
6    for line in fp:
7
8        numbers.extend( #Append the list of numbers to the result array
9            [int(item) #Convert each number to an integer
10             for item in line.split() #Split each line of whitespace
11             ])
12
13print(numbers)
14