I wrote this code but I do not know how to add my CSV files to it

import hashlib
import csv
from collections import OrderedDict
hp = OrderedDict()
akahr = OrderedDict()
def hash_password_hack(input_file_name, output_file_name):
    with open(input_file_name) as fin :
        reader = csv.reader(fin)    
    for i in range (0 , 10000):
        x = repr(i).encode()
        y = hashlib.sha256(x).hexdigest()
        ##print(y)
        hp[y]= i
        ##print(hp)
    for radif in reader :
        name = radif[0]
        hash = radif[1]
        for hash_dakhele_hp in hp.keys():
            if hash_dakhele_hp==hp.keys():
                akahr[name]=hp.get(hash_dakhele_hp)
    with open(output_file_name,'w') as out :
        count = 0
        for name in akahr :
            count +=1
            if count == 1:
                out.write(name + ',' + str(akahr.get(name)))
            else:
                out.write('/n' + name + str(akahr.get(name)))

The code should read data from the input CSV file like this :

Danial,a19fbf8bf0530ca46179b803a8234f56276f21c0e7dc2f84c682924b95de5801

Check all the passwords made from 0000 to 9999 and add them to the dictionary and in dictionary find which hash password is like this and replace it with a password like :

Danial,1596

but its not working