Question

Python 3.7.2

Write a function file_copy that takes two string parameters (in_file and out_file) and copies the content of in_file into out_file. Assume that in_file exists before file_copy is called. For example, the following would be correct input and output:

>>> file_copy('created_equal.txt', 'copy.txt')
>>> copy_f = open('copy.txt')
>>> copy_f.read()
'We hold these truths to be self-evident,\nthat all men are created equal\n

Answer 1

def file_copy(in_file, out_file):
    with open(in_file, 'r') as f, open(out_file, 'w') as w:
        for line in f:
            w.write(line)