!type data.txt
Hello, world! I like Python.
[s for s in open('data.txt',encoding='utf-8')]
['Hello, world!\n', 'I like Python.\n']
f=open('outdata.txt','w')
for i in range(10):
f.write(f'This is line {i}\n')
f.close()
!type outdata.txt
This is line 0 This is line 1 This is line 2 This is line 3 This is line 4 This is line 5 This is line 6 This is line 7 This is line 8 This is line 9
for s in open('outdata.txt'):
print(s)
This is line 0 This is line 1 This is line 2 This is line 3 This is line 4 This is line 5 This is line 6 This is line 7 This is line 8 This is line 9