convert-jpg-to-png.py

import os
from PIL import Image

files = os.listdir('.')
for f in files:
    first_name = (f[:6])
    last_name = (f[-4:])
    jpg_name = '.PNG'
    full_name = first_name + last_name
    try:
        im = Image.open(full_name)
        im.save(first_name.upper() + jpg_name.upper(), "PNG")
    except:
        print(full_name)
        continue

import os

files = os.listdir('.')
for f in files:
newname = f.upper()
if newname == f:
continue
if newname in files:
print( "error: %s already exists" % newname )
os.rename(f, newname)