renameRE.py

#! /usr/bin/env python
import subprocess
import argparse
import re

# Parse command line arguments.

# Run a Bash command and send output to a list seperated by line.

# Change name function
def changeName(oldName, newNameBase):
    temp = re.split('([0-9]+)',oldname)
    newName = newNameBase + temp[1] + temp[2]
    subprocess.call(["mv", oldName, newName])

# Change names of all files matching base
def changeAllNames(oldNameBase, newNameBase):
    files = runBash("ls")
    for afile in files:
        temp = re.split('([0-9]+)',afile)
        if temp[0] == oldNameBase:
            changeName(afile,newNameBase)

# Change files with base inputFileName to base outputFileName
changeAllNames(args.inputFileName,args.outputFileName)