Lancer un script sur un dossier

python nom_du_fichier.py mondossier/

from tkinter import Tk
from tkinter import filedialog
import os
#######################
#C'est pour cette première partie qu'une manipulation doit être possible pour Linux j'imagine
root = Tk()
root.withdraw()

current_directory = filedialog.askdirectory()
select_file = filedialog.askopenfilenames()

file_path = os.path.join(current_directory,str(select_file))
print(file_path)
#######################
import re



dict = {'C':{'test1':'test2'},}

def find_END(line):
    if re.search(r'\bFIN\b', line):
        return True
    else:
        return False

def replacer_factory1(dictionary):
    def replacing(match):
        if len(dictionary) > 0:
            word = match.group()
            exchange = dictionary.get(word, word)
            return exchange
        else:
            return ""
    return replacing

def replacing1(text, dict):
    regex_patt_list = r'\b(?:' + '|'.join(dict) + r')\b'
    replacer = replacer_factory1(dict)
    return re.sub(regex_patt_list, replacer, text)

with open(file_path) as fin:
    with open(file_path + 'new', 'w') as fout:
        key = 0
        flag = 0
        sous_dict = dict["C"]
        cache_mem = []
        for line in fin:
            cache_mem.append(line)
            if find_END(line):
                #print(cache_mem)
                for x in cache_mem:
                    if x.strip() in dict.keys():
                        key = x.strip()
                        sous_dict = dict[key]
                    fout.write(replacing1(x,sous_dict))
                cache_mem = []