How to append integers from file to list?

[Milan]

I tried two solutions from the list, they being:

all_values = []

with open('message.txt', newline='') as infile:
    for line in infile:
        all_values.extend(int(line.strip().split(',')))

my_file = open("message.txt", "r")
  
# reading the file
data = my_file.read()
  
# replacing end of line('/n') with ' ' and
# splitting the text it further when '.' is seen.
data_into_list = int(data.replace('\n', ' ').split("."))
  
# printing the data
print(data_into_list)
my_file.close()

Both of them prompt the error

Error:
TypeError: int() argument must be a string, a bytes-like object or a real number, not 'list'