输出 f.read(20) 时如何查看 '\\n' 字符？

Question

If I print f.readlines(), I am able to see the '\\n' characters included, ['\\n', 'Avoid touching eyes, nose and mouth\\n', '\\n', 'Why? .....] ['\\n', 'Avoid touching eyes, nose and mouth\\n', '\\n', 'Why? .....]

something like f.read(20) produces:

Avoid touching eyes

which converts the '\\n' into actual empty line.

How to see actual '\\n' included within f.read(20)

Thank you.

Answer 1

Use the repr() function to get the literal representation of a string, rather than interpreting the control characters.

print(repr(f.read(20)))

repr() shows what you would have to type as a string literal in a program, so it also puts quotes around the output.

When you print a list, it prints the literal representations of all the list elements. But when you print a string, it interprets the control characters.