How to implement parameters in code for image processing

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Python

image-processing

Here's my code: Each function should have an img parameter plus any parameter specified in the comments to determine how the image will be filtered/edited. Each parameter needed is shown at the end of each function

rotating the image

from PIL import Image

img = Image.open("photot.jpeg")

w, h = (img.size)



def rotate():

 for x in range(w):

  for y in range(h):

   px = img.getpixel((x, y))

   target_x = (h - 1) - y

   img.putpixel((target_x, x), px)

rotate()

img.save("rotate.jpeg")
<pre>

need to use the parameter "img" and "degrees" degrees will be 90, 180 or 270

inverting image

def invert_colors():

 for x in range(w):

  for y in range(h):

   (r, g, b) = img.getpixel((x,y))

   ###print(r, g, b)

   px = img.putpixel((x,y), (255 - r, 255 - g, 255 - b))

invert_colors()

img.save("invert.jpeg")
<pre>

needs the parameter "img"

def mirror():

 for y in range(int(h/2)):

  for x in range(w):

   px = img.getpixel((x,y))

   target_y = (h - 1) - y

   img.putpixel((x, target_y), px)

mirror()

img.save("mirror_v.jpeg")
<pre>

needs the parameter "img","axis" and "start=0"

axis is horizontal or vertical

start value is 0 (zero) or "mid", which will determine whether the m

def remove_red():

 for x in range(w): # loop the width

  for y in range(h): # loop the height

   r,g,b = img.getpixel((x,y)) 

# get the rgb values of the sourcepixel

 # if b < g and b < r or r==g==b:

   img.putpixel((x,y), (0,g,b)) # update the target image

remove_red()

img.save('remove_red.jpeg')
<pre>needs the parameter "img"

NOTE: you're using only the Image class of the Python Imaging LIbrary, and the only

methods you are to use are

.new()

.open()

.getpixel()

.putpixel()

.save()

What I have tried:

I've written most of the code I just dont know what and how to change the code to accept the parameters