User:Lidia.Pereira/PNM/Rawgif

import struct, sys
import random
 
width = 320
height = 240

header = struct.pack("<BBBHHBHHHHBB", 0, 0, 2, 0, 0, 8, 0, 0, width, height, 32, 1 << 5)
 
totalFrames = 25
largeColumns = (width/5) - 25
smallColumns = 25

 
for frame in xrange(totalFrames):
    out = open("frame%04d.tga" % frame, "wb")
    out.write(header)
    attempt = random.randint(height/7, height/1.2)
    attempt1 = random.randint(10,90)
    cor = random.randint(55,255)
    for y in xrange(height):
        for x in xrange(5):
            for n in xrange(largeColumns):
                r, g, b, a = 0, 0, 0, 255
                if y <= attempt:
                    r, g = 55, 255
                    b = (frame + 1) * 10
                else:
                    r = 155
                out.write(struct.pack('B', b))
                out.write(struct.pack('B', g))
                out.write(struct.pack('B', r))
                out.write(struct.pack('B', a))
 
            for x in xrange(smallColumns):                                                                                                                                                           
                r, g, b, a = 0, 0, 0, 255
                if y < attempt1:
                    b = 155
                if y > attempt1 and y < 200:
                    b = cor 
                else:
                    b = 90
                out.write(struct.pack('B', b))
                out.write(struct.pack('B', g))
                out.write(struct.pack('B', r))
                out.write(struct.pack('B', a))

out.close()

The "unsuccessful" tries:

import struct, sys
import random
 
width = 320
height = 240

header = struct.pack("<BBBHHBHHHHBB", 0, 0, 2, 0, 0, 8, 0, 0, width, height, 32, 1 << 5)
 
totalFrames = 25
largeColumns = (width/5) - 25
smallColumns = 25

 
for frame in xrange(totalFrames):
    out = open("frame%04d.tga" % frame, "wb")
    out.write(header)
    attempt1 = random.randint(10,90)
    cor = random.randint(55,255)
    for y in xrange(height):
        for x in xrange(5):
            attempt = random.randint(height/7, height/1.2)
            for n in xrange(largeColumns):
                r, g, b, a = 0, 0, 0, 255
                if y <= attempt:
                    r, g = 55, 255
                    b = (frame + 1) * 10
                else:
                    r = 155
                out.write(struct.pack('B', b))
                out.write(struct.pack('B', g))
                out.write(struct.pack('B', r))
                out.write(struct.pack('B', a))
 
            for x in xrange(smallColumns):                                                                                                                                                           
                r, g, b, a = 0, 0, 0, 255
                if y < attempt1:
                    b = 155
                if y > attempt1 and y < 200:
                    b = cor 
                else:
                    b = 90
                out.write(struct.pack('B', b))
                out.write(struct.pack('B', g))
                out.write(struct.pack('B', r))
                out.write(struct.pack('B', a))

out.close()

import struct, sys
import random
 
width = 320
height = 240

header = struct.pack("<BBBHHBHHHHBB", 0, 0, 2, 0, 0, 8, 0, 0, width, height, 32, 1 << 5)
 
totalFrames = 25
largeColumns = (width/5) - 25
smallColumns = 25

 
for frame in xrange(totalFrames):
    out = open("frame%04d.tga" % frame, "wb")
    out.write(header)
    attempt1 = random.randint(10,90)
    cor = random.randint(55,255)
    for y in xrange(height):
        for x in xrange(5):
            for n in xrange(largeColumns):
                attempt = random.randint(height/7, height/1.2)
                r, g, b, a = 0, 0, 0, 255
                if y <= attempt:
                    r, g = 55, 255
                    b = (frame + 1) * 10
                else:
                    r = 155
                out.write(struct.pack('B', b))
                out.write(struct.pack('B', g))
                out.write(struct.pack('B', r))
                out.write(struct.pack('B', a))
 
            for x in xrange(smallColumns):                                                                                                                                                           
                r, g, b, a = 0, 0, 0, 255
                if y < attempt1:
                    b = 155
                if y > attempt1 and y < 200:
                    b = cor 
                else:
                    b = 90
                out.write(struct.pack('B', b))
                out.write(struct.pack('B', g))
                out.write(struct.pack('B', r))
                out.write(struct.pack('B', a))

out.close()