import os
import shutil
path = r'c:\Users\user\Downloads\44'
correctname = 'shot_01'
padding = 4
# list of files
tmp = os.listdir(path)
files = []
for t in tmp:
    if os.path.isfile(os.path.join(path, t)):
        files.append(t)
# separate
frames=[]
for f in files:
    name, ext = os.path.splitext(f)
    fullname = name
    while name[-1].isdigit():
        name=name[:-1]
    digits = int(fullname.replace(name,''))
    frames.append(digits)
offset = min(frames)-1
# new name
outfolder = os.path.join(path,correctname)
if not os.path.exists(outfolder):
    os.mkdir(outfolder)
for i, f in enumerate(files):
    print(i,f)
    old = os.path.join(path, f)
    name, ext = os.path.splitext(f)
    newName = correctname + '_' + str(frames[i]-offset).zfill(padding) + ext
    new = os.path.join(path, correctname, newName)
    if os.path.exists(new):
        os.remove(new)
    shutil.copy2(old, new)
# search missing frame
fullrange = range(min(frames), max(frames)+1)
miss = []
for i in fullrange:
    if not i in frames:
        miss.append(i)
#message
print('Miss frame:', miss)
a = input('Remove old files? [y/n]: ')
if a == 'y':
    for f in files:
        os.remove(os.path.join(path, f))
print(a)
input()