# Python - identify the problem in the code and rewrite it without errors
# Add a user to the list and return this list.
# If the second argument is not specified during the call, return the user in the response.
def add_user(user, users=[]):
users.append(user)
return users
print(add_user("User"))
# Create a list of three functions, where each function returns its number when called.
# The first function should return - 0, the second - 1, the third - 2:
funcs = [lambda: i for i in range(3)]
print([f() for f in funcs])