Question

Write a Python program that reads from user the input file called data.txt that consists of a  keyword followed by a sequence of numbers separated by commas. If the keyword is UP, the  numbers are sorted in increasing order, if the key word is DOWN, the numbers are sorted in  decreasing order. The sorted sequence of numbers are saved in sorted.txt

Answer 1

CODE:

# Opening file handlers
fh = open('data.txt','r')
fh2 = open('sorted.txt','w')

# Iterating over each line of data.txt
for line in fh.readlines():
    content = line.split() # Converting data into list
    way = content[0] # Extracting the way the line to be sorted
    num = list(map(int,content[1:])) # Converting list into list of integers
    
    if way == 'UP':
        num.sort()
    if way == 'DOWN':
        num.sort(reverse = True)
    
    for n in num:
        fh2.write(str(n)+" ") # Wrting into the file
    fh2.write("\n")
    
fh.close()
fh2.close()

OUTPUT: