What is use of backslash in python 3

Question

How to use backslash in python 3

Answer 1

If you want to print

print('a'b')

Python will think, the string ends after the second quotation mark. Then you get an error.

By writing

print('a\'b')

You tell Python:

Please don't end the string here, just print the quotation mark.

There are many other use cases. Backslash always starts a sequence of signs with a specific purpose besides just output.