CODEWITHSUNDEEP
pythonstringreplaceescapingbackslash
Hannes Karppila
Hannes Karppila

Reputation: 988

python compare "\n" escape chars with "\\n"

Ok,

I have two strings, "Hello\nWorld!" and Hello\\nWorld!. I have to compare those that way that \n and \\n equals.

Thats not hard. I just string1.replace("\n", "\\n").

But what if I have to do it right for all escape chars including unicode escapes, so manual replace is not an option.

UPDATE

Exaple case:

I read from file Hello\nWorld! (as seen when file is opened in editor). Python will see Hello\\nWorld!

I want to compare the last one with first one the way they are equals.

Upvotes: 4

Views: 12339

Answers (1)

falsetru
falsetru

Reputation: 369424

How about using unicode_escape encoding?

>>> 'hello\r\n'.encode('unicode_escape') == 'hello\\r\\n'
True
>>> 'hello\r\n' == 'hello\\r\\n'.decode('unicode_escape')
True

In Python 3.x, you need to encode/decode the string/bytes:

>>> 'hello\r\n'.encode('unicode_escape').decode() == 'hello\\r\\n'
True
>>> 'hello\r\n' == 'hello\\r\\n'.encode().decode('unicode_escape')
True

Upvotes: 10

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