Answer: Pixel Puzzle #43

The hidden picture is a robot!

The finished pixel picture: a robot.
Here’s what the colours make.

The picture as Python

Here is the same picture stored as numbers in a Python list. The program reads each number and prints a symbol for it, so you can see the picture appear in the Python shell.

picture = [
    "001100",
    "002200",
    "011100",
    "013100",
    "004400",
    "000500",
]
symbols = " #@*o+"

for row in picture:
    line = ""
    for number in row:
        line = line + symbols[int(number)]
    print(line)

When you run it, it prints:

  ##
  @@
 ###
 #*#
  oo
   +