find and replace

fandr.py

 import fnmatch
import os
import re
import fileinput

def collect_files_lst(rootPath, patternList):
    file_collection_lst = []

    for each_pattern in patternList:
        for root, dirs, files in os.walk(rootPath):
            for filename in fnmatch.filter(files, "*.{}".format(each_pattern)):
                file_collection_lst.append(os.path.join(root, filename))
    print("{} Documents found.".format(len(file_collection_lst)))
    return file_collection_lst



def find_replace(rootPath, patternList,txtToSearch, txtToReplace):


    collected_files = collect_files_lst(rootPath, patternList)
    count = 0
    for each_file in collected_files:
         ffile = fileinput.FileInput(each_file, inplace=True)
         for line in ffile:
             line.replace(txtToSearch,txtToReplace)
             count += 1
    print("Replaced {} accurance of {}".format(count, txtToSearch))


find_replace("testdata/game-of-life",["java"],"public","private")