Запись результата в отдельный файл

import mymodule2 as m
import pickle
import numpy as np
with open("lst.txt","r") as A:
    A_data = A.read().split(' ')
A = np.array(A_data[0:5])
f = open("pickles1.dat" , "wb")
B=[]
for x in A:
    B.append(m.y(x))
pickle.dump(B,f)
f = open("pickles1.dat","rb")
B = pickle.load(f)
print(B)

import mymodule2 as m
import pickle
import numpy as np
with open("lst.txt","r") as A:
    A_data = A.read().split(' ')
A = np.array(A_data[0:5])
f = open("pickles1.dat" , "wb")
B=[]
for x in A:
    B.append(m.y(x))
pickle.dump(B,f)
f = open("pickles1.dat","rb")
B = pickle.load(f)
B=str(B)
handle = open("result.txt", "w")
handle.writelines(B)
handle.close()

def zapis(my_filename, fext2):
    with open(my_filename + '.' + fext2, 'w', encoding='utf-8') as fp:
        print('проба', file=fp, sep="\n")
 
 
def reader(my_filename, fext2):
    with open(my_filename + '.' + fext2, 'r', encoding='utf-8') as fp:
        data = fp.readlines()
    print(data)
 
 
if __name__ == '__main__':
    my_filename = None
    fex2 = None
    zapis(my_filename='проба', fext2='txt')
    reader(my_filename='проба', fext2='txt')

my_str = "{} + {} = {}".format(1, 2, 1 + 2)
file.write(my_str)

my_str = f'{x}: {func(x)}'
file.write(my_str)