“Python Learning: Automate Boring Stuff with Python | Chapter 8 : My Solution to Practice Project: Filling in the Gaps

How to fill in the gaps 1:49:09 AM

I need help with this!

I like this exercise but I cannot seem to find its ideal solution. Could someone suggest in pseudocode, please..?

#finds files with a give prefix in a folder 
#locates any gaps in the numbering
#renames all the later files to close the gaps
#Usage: python gaps.py <source> <prefix>

import sys, os, shutil,re

-find source
-list all files in source folder
-filter in files starting with given prefix
-loop over length of filtered files 
- 001, 010, 100

if len(sys.argv) == 3:
	source = sys.argv[1]
	source = os.path.abspath(source)
	if os.path.exists(source):
		textFiles = []
		numbering = []
		prefix = sys.argv[2]
		reg = re.compile("^{}(\d+).txt$".format(prefix))
		for file in os.listdir(source):
			if reg.match(file):
				match = reg.match(  file  )
				match = match.groups()[0]
				match = int(match)
		if len( textFiles ) > 0:
			gap = None
			for iterator in range(len(textFiles)):
					if iterator not in numbering:
						reg = re.compile("^{}(0+)\d*.txt$".format(prefix))
						m = (reg.match(  textFiles[iterator]  ) )
						if m: m = m.groups()[0]
						else: m = ""

						for jterator in range(iterator, len( textFiles)):
							curFile = textFiles[jterator]
							curFile = os.path.join(source, curFile)
							new_name = prefix + m + str(jterator) + ".txt"
							new_filename = os.path.join(source, new_name)
							shutil.move(curFile, new_filename)
			print("There are no other files with that prefix")
		print("Provide valid source path")
	print("Usage: python gaps.py <source> <prefix>")

I finally found the right way to post the python code (with indenting of-course)