Regular Expression to match cross platform newline characters

python regex cross-platform eol
Alan picture Alan · Aug 26, 2009 · Viewed 22.8k times · Source

My program can accept data that has newline characters of \n, \r\n or \r (eg Unix, PC or Mac styles)

What is the best way to construct a regular expression that will match whatever the encoding is?

Alternatively, I could use universal_newline support on input, but now I'm interested to see what the regex would be.

Answer

too much php picture too much php · Aug 26, 2009

The regex I use when I want to be precise is "\r\n?|\n".

When I'm not concerned about consistency or empty lines, I use "[\r\n]+", I imagine it makes my programs somewhere in the order of 0.2% faster.

Related questions

How to extract numbers from a string in Python?

I would extract all the numbers contained in a string. Which is the better suited for the purpose, regular expressions or the isdigit() method? Example: line = "hello 12 hi 89" Result: [12, 89]

Read More
Python string.replace regular expression

I have a parameter file of the form: parameter-name parameter-value Where the parameters may be in any order but there is only one parameter per line. I want to replace one parameter's parameter-value with a new value. I am using …

Read More
Split string on whitespace in Python

I'm looking for the Python equivalent of String str = "many fancy word \nhello \thi"; String whiteSpaceRegex = "\\s"; String[] words = str.split(whiteSpaceRegex); ["many", "fancy", "word", "hello", "hi"]

Read More