What's raw string?

Question

I don't get it,. what's the meaning of adding r. thx!

Answer 1

raw strings ignore escape sequences. if you run:

print('test\ntest')
print(r'test\ntest')

you will see that the first statement prints two lines and the second one only one since new line is treated as normal characters in raw string

Answer 2

@RedAnt clear thanks!