w3resource

Python: Convert the values of RGB components to a hexadecimal color code

Python String: Exercise-95 with Solution

Write a Python program to convert the values of RGB components to a hexadecimal color code.

Create a placeholder for a zero-padded hexadecimal value using '{:02X}' and copy it three times.

Use str.format() on the resulting string to replace the placeholders with the given values.

Sample Solution:

Python Code:

def rgb_to_hex(r, g, b):
  return ('{:02X}' * 3).format(r, g, b)
 
print(rgb_to_hex(255, 165, 1))
print(rgb_to_hex(255, 255, 255))
print(rgb_to_hex(0, 0, 0))
print(rgb_to_hex(0, 0, 128))
print(rgb_to_hex(192, 192, 192))

Sample Output:

FFA501
FFFFFF
000000
000080
C0C0C0

Flowchart:

Flowchart: Convert the values of RGB components to a hexadecimal color code.

Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:


Python Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Write a Python program to convert a hexadecimal color code to a tuple of integers corresponding to its RGB components.
Next: Write a Python program to convert a given string to camelcase.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Python: Tips of the Day

Check if a given key already exists in a dictionary:

In is the intended way to test for the existence of a key in a dict.

d = {"key1": 10, "key2": 23}

if "key1" in d:
    print("this will execute")

if "nonexistent key" in d:
    print("this will not")

If you wanted a default, you can always use dict.get():

d = dict()

for i in range(100):
    key = i % 10
    d[key] = d.get(key, 0) + 1

and if you wanted to always ensure a default value for any key you can either use dict.setdefault() repeatedly or defaultdict from the collections module, like so:

from collections import defaultdict

d = defaultdict(int)

for i in range(100):
    d[i % 10] += 1

but in general, the in keyword is the best way to do it.

Ref: https://bit.ly/2XPMRyz