Simple Python script for flipping an ASCII- art

asciiFlipper.py

__author__ = 'Rand0mb0t'
	# Code for ASCII-ART Flipper 

img_file = str(input("select an input file : "))
save_file = str(input("Select an output file : "))
with open(img_file,"r") as file:	# Open art- file
	lines = file.read().split('\n')
	while '' in lines:		# Remove any empty lines from file
		lines.remove('')

# Required variables
art = []
modified_art = []
save_art=[]
direction = str()

print("Current ascii-art")
# Print current ascii-art
for line in lines:
	art.append(list(line))
	print(line)
# Take input for direction
direction = str(input("Enter direction to flip Upside Down -> ud , left-right -> lr : "))
# logic to move image left to right
for i in range(len(art)):
	modified_art.append([])
	for j in range(len(art[i]),0,-1):
		modified_art[i].append(art[i][j-1])
# logic to flip image upside down( For mirror image lr flip is necessary )
if direction == 'ud':
	for i in range(len(modified_art),0,-1):
		save_art.append(''.join(modified_art[i-1]))

# Logic for saveing lr-flip
if direction == 'lr':
	for i in range(len(modified_art)):
		save_art.append(''.join(modified_art[i]))
# Showing the flipped art
for line in save_art:
	print(line)

# Savinf the flipped art
with open(save_file,"w") as saving:
	for line in save_art:
		saving.write(line)
		saving.write('\n')

print("File Saved")

thanks mate