# Section 9.4 snippets

# Updating accounts.txt 
accounts = open('accounts.txt', 'r')

temp_file = open('temp_file.txt', 'w')

with accounts, temp_file:
    for record in accounts:
        account, name, balance = record.split()
        if account != '300':
            temp_file.write(record)
        else:
            new_record = ' '.join([account, 'Williams', balance])
            temp_file.write(new_record + '\n')
                    

# os Module File Processing Functions
import os

os.remove('accounts.txt')

os.rename('temp_file.txt', 'accounts.txt')




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