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import os

verbose = True

class CreateFile:

def __init__(self, path, txt='hello world\n'):

self.path = path

self.txt = txt

def execute(self):

if verbose:

print(f"[creating file '{self.path}']")

with open(self.path, mode='w', encoding='utf-8') as out_file:

out_file.write(self.txt)

def undo(self):

try:

delete_file(self.path)

except:

print('delete action not successful...')

print('... file was probably already deleted.')

def delete_file(path):

if verbose:

print(f"deleting file {path}...")

os.remove(path)

def main():

orig_name = 'file1'

df=delete_file

commands = [CreateFile(orig_name),]

commands.append(df)

for c in commands:

try:

c.execute()

except AttributeError as e:

df(orig_name)

for c in reversed(commands):

try:

c.undo()

except AttributeError as e:

pass

if __name__ == "__main__":

main()