Question

Python problem:

1. The colors red, blue, and yellow are known as the primary colors because they cannot be made by mixing other colors. When you mix two primary colors, you get a secondary color, as shown here:

• When you mix red and blue, you get purple.
• When you mix red and yellow, you get orange.
• When you mix blue and yellow, you get green.

Create a text file with the names of two colors in it. Write a program that reads the file and replaces the colors with the color that they combine to produce. In other words, if the text file contains "blue" and "yellow," after you run your program, it should only contain the word "green."

2. Make a text file with a column of numbers (however many, it doesn't matter) in no particular order. Write a program that reads that file and re-orders the numbers from highest to lowest and saves that back in the file.

Answer 1

OUTPUT :

CODE :

f1 = open('colors.txt','r+')
colors = f1.readline().split()
a = colors[0]
b = colors[1]
c = ''
#Check for colors and store ans
if a=='red' and b=='blue':
c = 'purple'
if a=='red' and b=='yellow':
c = 'orange'
if a=='blue' and b=='yellow':
c = 'green'
#Clear existing contents
f1.seek(0)
f1.truncate()
#Write to file
f1.write(c)
f1.flush()
f1.close()

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OUTPUT :

CODE :

#Read numbers
f = open('numbers.txt','r+')
#List to store numbers
l = []
#read all numbers
for line in f:
#add to list
n = int(line)
l.append(n)
#Clear the existing contents
l.sort()
f.seek(0)
f.truncate()
#Write sorted list to file
for line in l:
f.write(str(line)+'\n')
f.flush()
f.close()