I have to ask the user for a filename (that exists in the programs father file) and open that .gif file in order to play with the colors of the image... I am really new as programming and need help! I will be asking for more answers soon as well!!

Here is what I have so far:
You can see where my program has to go so help as much as you can/want!!

from graphics import *
import os

def main():
filename = input('Please enter the name of a picture file: ')
#Open .gif filename internally so I can edit it
print()
print('Select your choice:')
print()
print('a. Turn the image blue')
print('b. Convert the image to grayscale')
print('c. Invert the colors of the image')
print('d. Mirror the image from left to right')
print()

#re-ask question if user enters an invalid answer a-d
abort = 0
while abort == 0:
selection = input('Choose a selection: ')
print()
selection = selection.lower()
if selection == 'a':
abort = 1
elif selection == 'b':
abort = 1
elif selection == 'c':
abort = 1
elif selection == 'd':
abort = 1
else:
print('That is not a valid entry! Try again')
print()

def image_blue():
#Change image properties to blue

def image_grayscale():
#Change image to grayscale

def image_invert():
#Invert colors of image

def image_mirror():
#Mirror original image

def save_file():
#Save file to new name and close window

file_save=input('Please enter the file you would like to save to: ')


main()

Please edit your post. And put the code in code tags.

[CODE]
your code
[/CODE]

You'll then get it like this:

your code

Edited 3 Years Ago by diafol: fixed formatting

from graphics import *
Import os

def main():
    filename = input('Please enter the name of a picture file: ')
    #Open .gif filename internally so I can edit it
    print()
    print('Select your choice:')
    print()
    print('a. Turn the image blue')
    print('b. Convert the image to grayscale')
    print('c. Invert the colors of the image')
    print('d. Mirror the image from left to right')
    print()
    #re-ask question if user enters an invalid answer a-d 
    [abort = 0]
    [while abort == 0:]
      [selection = input('Choose a selection: ')]
      [print()]
      [selection = selection.lower()]
      [if selection == 'a':]
        [abort = 1]
      [elif selection == 'b':]
        [abort = 1]
      [elif selection == 'c':]
        [abort = 1]
      [elif selection == 'd':]
        [abort = 1]
      [else:]
        [print('That is not a valid entry! Try again')]
      [print()]

def image_blue():
#Change image properties to blue

def image_grayscale():
#Change image to grayscale

def image_invert():
#Invert colors of image

def image_mirror():
#Mirror original image

def save_file():
#Save file to new name and close window

    file_save=input('Please enter the file you would like to save to: ')


main()]

can anyone help me to read all the pixels in a .gif so i can change theie pixel colors....... I have a .gif file in the same file as my python program but i need to be able to read through all the pixels to make the necessary changes whether it be grayscale, b&w, invert, and so on

gif is one of the few supported image types supported by tkinter. So you do not need to code yourself for that or use third party modules.

Unfortunately we arent allowed to use secondary sources and we have to code it out.... I think if i can figure out how to store all points to a list and all the colors in the width, height, and all in between i can change the color sequence numbers if applicable?! just dont know how to do that in code...

I HAVENT GOTTEN THE GRAYSCALE TO WORK YET... NEED SOME HELP.. HAVENT ATTEMPTED THE OTHER TWO BELOW IT. ANY HELP IS APPRECIATED!!!

from graphics import *
import sys

def main():
    filename = input('Please enter the name of a picture file: ')
    print()
    try:
      img = Image(Point(0,0), filename)
    except:
      tk.TclError()
      print('The selected file cannot be opened')
      sys.exit()
    if img.getHeight() == 0:
      print('The selected file cannot be opened')
      sys.exit()

      
    # Indices of the different color values
    RED = 0
    GREEN = 1
    BLUE = 2


    colors = img.getPixel(0,0)


    print()
    print('Select your choice:')
    print()
    print('a. Turn the image blue')
    print('b. Convert the image to grayscale')
    print('c. Invert the colors of the image')
    print('d. Mirror the image from left to right')
    print()
    abort = 0
    while abort == 0:
        selection = input('Choose a selection: ')
        print()
        selection = selection.lower()
        if selection == 'a':
          abort = 1
          image_blue = blue_pic(filename)
        elif selection == 'b':
          abort = 1
          image_grayscale = grayscale_pic(filename)
        elif selection == 'c':
          abort = 1
          image_invert = invert_pic(filename)
        elif selection == 'd':
          abort = 1
          image_mirror = mirror_pic(filename)
        else:
          print('That is not a valid entry! Try again')
          print()

def blue_pic(filename):
    
    img = Image(Point(0,0), filename)
    height = img.getHeight()
    width = img.getWidth()
    for i in range (0, width):
      for j in range (0, height):
        colors = img.getPixel(i, j)
        Blue = colors[2]
        bluestring = color_rgb(0, 0, Blue)
        img.setPixel(i, j, bluestring)
    save_file(img) 

def grayscale_pic(filename):
    
    img = Image(Point(0,0), filename)
    height = img.getHeight()
    width = img.getWidth()
    for i in range (0, width):
      for j in range (0, height):
        colors = img.getPixel (i, j)
        Red = colors[0]
        Green = colors[1]
        Blue = colors[2]
        
        total_color_value = (Red + Green + Blue)
        neg_value = (total_color_value / 3)
        
        Red = Red - neg_value
        Green = Green - neg_value
        Blue = Blue - neg_value
        
        graystring = color_rgb(Red, Green, Blue)
        img.setPixel(i, j, graystring)
    save_file(img)

def invert_pic(filename):
    
    img = Image(Point(0,0), filename)
    height = img.getHeight()
    width = img.getWidth()
#    for i in range (0, width):
#      for j in range (0, height):
    
    save_file(img)

def mirror_pic(filename):
    
    img = Image(Point(0,0), filename)
    height = img.getHeight()
    width = img.getWidth()
#    for i in range (0, width):
#      for j in range (0, height):

    save_file(img)
    
def save_file(img):          
    file_save=input('Please enter the file you would like to save to: ')
    print()
    try:
      img.save(file_save)
    except:
      tk.TclError()
      print('The selected file cannot be saved to the file')
      sys.exit()

    
        
main()
Comments
DO NOT SHOUT
This article has been dead for over six months. Start a new discussion instead.