Rust format raw string. In the case where you already have an owned String, you don't need a new allocation just to strip the trailing new line. I'd like to have a null-terminated string literal of a path in windows, which has a lot of backslashes. Mar 17, 2024 · Concatenates literals into a static string slice. {. [ −] A byte string library. Unlike Vec<u8>, its Display and Debug implementations show a string, not an array of numbers. But the difference between normal string literals "foo" and raw string literals r#"foo"# is only during tokenization! A string literal is one token. 2024/01/15に公開. The correct and most efficient way to do this is to create an empty String outside of the loop and only append to it in the loop: let mut edited_line = String::new(); for word in split_line {. to_owned () method makes a copy of "foo" (which is a &str) and gives you a heap-allocated String to work with. "abc\r def" Use the std::include_str!() macro to include a file in UTF-8 format which contains the text with CRLF line terminators. let l = vec![. The primary motivation for byte strings is for handling arbitrary bytes that are mostly UTF-8. Sep 9, 2015 · The documentation indicates the issue: the write_fmt method takes one argument, of type std::fmt::Arguments, which can be constructed via the format_args! macro. Breaking long string literals. 4. All strings are guaranteed to be a valid encoding of UTF-8 sequences. The main type provided by this crate, representing an abstract stream of tokens, or, more specifically, a sequence of token trees. io | docs. You thus wish to print it as an array of bytes, e. rs. It can be used to embed handwritten assembly in the assembly output generated by the compiler. Docs. let str: &'static str = "Hello, World!"; C# verbatim string literals are equivalent to Rust raw string literals. Feb 4, 2024 · This macro accepts a ‘writer’, a format string, and a list of arguments. Format String Syntax. e. Another thing to note: the print! macro does not return the output in a string, it prints the output to stdout. For example, the { character is escaped with { { and the } character is escaped with }}. string str = "Hello, World!"; Rust. rs ). let obj = json!({"foo":1,"bar":2}); let mut buf = Vec::new(); Dec 18, 2021 · However, it introduces an inconsistency, because variables from the surrounding scope currently don't require parentheses. Notice the extra r and the custom delimiter # at the start and end. With format_args!() (same syntax as format!) you can prepare a core::fmt::Arguments value, which can be passed to core::fmt::write. Mar 13, 2019 · format! can't return &str because it will always allocate String. In Rust, they are &'static str, which is immutable and has a global lifetime and does not get allocated on the heap; they're embedded in the compiled binary. In Rust, working with multiline strings is a common task, especially when it comes to templating or generating code. Sorted by: 17. > Step 2: And Like the video. The ? is a formatting option that triggers the Converts a string slice to a raw pointer. The # formatter clearly is ergonomic in this case. (Double-quoting will produce doubled quotes in the string. ARM. The hygienic context of the string literal generated by the expansion is entirely dependent on the expression. It is basically a Vec<u8>, to be interpreted as string. Asking for help, clarification, or responding to other answers. let string1 = "username"; let string2 = "password"; let sasl_jaas_config = format!(. Oct 19, 2013 · As long as format!() treats \ as an escape character, it should handle all the same escapes that normal string literals do. 0 => format!("Hello, {x}"), API documentation for the Rust `fstrings` crate. Decode a hex string into a mutable bytes slice. In fact, Rust’s answer is 24: that’s the number of bytes it takes to encode “Здравствуйте” in UTF-8, because each Unicode scalar value in that string takes 2 bytes of storage. Formatting functions such as fmt::format () and fmt::print () use the same format string syntax described in this section. Second line, with leading space. You cannot use , for example. To convert a single value to a string, use the to_string method. source ·. Remove the computed number of spaces from the Jul 15, 2021 · In most languages, the term for the concept is one of "string formatting" (such as in Rust, Python, or Java) or "string interpolation" (such as in JavaScript or C#). Unlike String, there are no guarantees about the contents being valid UTF-8. May 26, 2016 · By Default in Rust is all about MemoryManage and Owenership and Move, we dont see usually like copy or deep copy hence if you are trying to concatinate strings then left hand side should type String which is growable and should be mutable type, the right hand side can be normal string literal a. We have multiline strings. So our options are. k. Mar 3, 2021 · Use . // You can use up to 65535 #s. この事情で,serde_json などで文字列をパースしたい場合に非常に読みにくいリテラルを書く Raw String Literals. Jun 19, 2023 · Which allows for raw string literals to be written like so: let greeting = r#"Hello"#; let salutation = r##"Goodbye"##; let call_me = r##"#555-5555"##; // etc. Learn Rust with Example, Exercise and real Practice, written with ️ by https://course. This is basically the same way that Python and C# developers are used to Oct 17, 2017 · I'm trying to define a constant format string that is used in a number of places with the format! macro. Rust automatically escapes the input. So my question is, how do I create a "partially applied" format!able string, which can be interpolated at a later point? Another example of what I mean: Jan 1, 2023 · Learn how to parse a string into a valid json object in rust using the serde_json crate and the from_str method. This also means that the generated string has to be a valid Rust string. If you need to mutate the contents of the string slice, use as_mut_ptr. In which case, as @DanielKeep pointed out, you can use Apr 4, 2019 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Dec 22, 2023 · Hello. Before expanding fmt_wrap, the compiler has to Struct. So: {:#04x} focuses on the total width, useful when doing a rigid fixed-width table layout. " It provides a macro called indoc!() that takes a multiline string literal and un-indents it so the leftmost non-space character is in the first column. html contains Mar 24, 2018 · String は一般的に文字列スライスを to_string メソッドで変換することで作成されます。 ↑このQiitaの解説が一番わかりやすい. kafka. Sep 15, 2015 · I want to do this to dynamically add strings into the current string for use in a view engine. You are also trying to pass a variable to println!, which requires a format string. This means that this: fmt_wrap!("foo " bar"); Will never work. Both types provide a Debug implementation that outputs the slice using the Rust byte string syntax. I'd also like to implement a default String with 1 interpolation placeholder when the server doesn't provide a template. It lets us insert characters that might otherwise confuse a normal string as literals (like double quotes and backslashes). This is both the input and output of # [proc Functions. As best I can describe it, it's one where a variable number of characters (in Rust's case, the Inline assembly. Implementing the fmt::Display trait automatically implements the ToString trait which allows us to convert the type to String. \ “# Tip: If you use std::fs::read_to_string to import and convert it to string, the result will be a raw string by default. apache. Examples . This crate also handles special escape sequences like “”, which represents a newline. – Sven Marnach Nov 17, 2021 at 13:43 Mar 17, 2024 · A common use for format! is concatenation and interpolation of strings. 46. May 6, 2018 · In addition to Shepmaster's answer you can also format strings without an allocator. : separates the name or ordinal of the thing being formatted (which in this case is omitted, and thus means "the next thing") from the formatting options. We've seen that formatting is specified via a format string: format! (" {}", foo) -> "3735928559" format! ("0x {:X}", foo) -> "0xDEADBEEF" format! ("0o {:o}", foo) -> "0o33653337357" The same variable ( foo) can be formatted differently depending on which argument type is used: X vs o vs unspecified. Similar to another question, Writing to a file or stdout in Rust, I am working on a code that can work with any std::io::Write implementation. Anything that is not contained in braces is considered literal text, which is copied unchanged to the output. You can customize the indentation by using PrettyFormatter::with_indent. But now null termination ("\\0") will also be inserted as a string, not as a null-byte. In core::fmt::Write you only need to implement write_str and then you get write_fmt for free. Python のように ' と " が可換に用いられる言語とは異なり,Rust では String Literal が " で囲まれて用いられる.. More specifically: let s = "hello\ \ world!"; Would become “hello world!”. The type provide interfaces for iterating over those token trees and, conversely, collecting a number of token trees into one stream. Take the minimum. I believe the format!() macro is the idiomatic way to do what you're trying to do. If this is a feature request, no, because at runtime the information that the original string token was a raw string is erased. Byte strings are just like standard Unicode strings with one very important difference: byte strings are only conventionally UTF-8 while Rust’s standard Unicode strings are guaranteed to be valid UTF-8. tech. Feb 21, 2015 · Source files have the extension . Rust Strings Breaking long string literals. Help us to keep this website almost Ad Free! It takes only 10 seconds of your time: > Step 1: Go view our video on YouTube: EF Core Bulk Insert. , [0x42, 0x18, 0x0, ]. The difference between the two types is that proc_macro types are entirely specific to procedural macros and cannot ever exist in code outside of a procedural macro, while proc_macro2 types may exist anywhere including tests and non-macro code like main. Feb 3, 2022 · Macros are translated into "normal" code during the compilation process, so the format string must be parsed and analyzed at that very phase, not at runtime. Here's a cross-platform example that removes multiple trailing \r or in place: fn strip_trailing_nl(input: &mut String) {. Format text in a more elegant, user friendly fashion. Decodes a hex string into raw bytes. Additionally, unlike some systems languages, strings are not NUL-terminated and can contain NUL bytes. ¶. See Playground: Dec 4, 2018 · 2 Answers. [ −] pub struct RawString { /* private fields */ } A String with unchecked contents. If you're working with Rust 1. 24 fn example(s: &str) { let stream: proc_macro2::TokenStream = s. Dec 23, 2020 · let line = "hello"; write!(output, "{}", line) Other methods to write to a Writer include calling std::io::Write::write_all, or to write a slice into a file directly you can use std::fs::write. You could just use the Debug output, if that is sufficient to you. Crate escape_string. A C String with a capacity (max len) of 256. Also, starting a process for pwd is rather heavy -- try env::current_dir () instead. written over \. Efficiently split lines by whitespace, while handling the backslash escape sequences in Rust-like string format. g. if !word. {} surrounds all formatting directives. It would be nice to be able to indent them nicely. token. To get a better idea, take a look at this example: 1. Id like to know if its possible to wrap it! Now some characters to justify using a raw string \foo\bar\baz :)"#) The following rules characterize the behavior of the indoc! () macro: Count the leading spaces of each line, ignoring the first line and any lines that are empty or contain spaces only. use serde::Serialize; use serde_json::json; fn main() {. Here is an example test code. A byte string literal expression consists of a single BYTE_STRING_LITERAL or RAW_BYTE_STRING_LITERAL token. A formatter string should be chosen depending on the context, specifically how one thinks about displaying a number in that context, as the chosen format expresses intent. What I'm looking for it the name of this general programming language design paradigm. C#. Arguments will be formatted according to the specified format string and the result will be passed to the writer. Feb 19, 2019 · There are two different interpretations of [c_char; 256] here: An array of bytes. " }; It works for raw string literals as well. Support for inline assembly is provided via the asm! and global_asm! macros. contains("substring") {. §Examples Jan 24, 2014 · Rust has string formatting. Is it possible to split this across multiple lines without adding newline characters to the string? file. I'm open for suggestions if there might be a better way to do it. You will have to return a String: fn coords(x: i32, y: i32) -> String {. That's probably the practical, correct answer that you're looking for. hash, self. Both byte sequences are normally translated to U+000A , but as a special exception, when an unescaped U+005C character ( \ ) occurs immediately before a line break, then the line Converts a string slice to a raw pointer. j will be dropped at the end of the function, so you can't return a reference to it. Oct 1, 2022 · If you wish to just break a string across multiple lines for formatting reasons you can escape the newline and leading whitespace with a \; for example: let string = "one line \. bstr. In the Rust version, there is no additional repetition but you must explicitly call format! () and the inserted values are separated from the string. No, it doesn't. Wanted to try to interpolate values into those raw string literals; however, I noticed that the format! macro wouldn’t accept raw string literals. Seeing it in Action. concatcp: Concatenates integers 2, bool, and &str constants into &'static str. rs Jul 2, 2016 · 80. It is basically a [u8], to be interpreted as string. let test = String::from("Test: {}"); let test2 = String::from("Not working!"); println!(test, test2); What I actually want to achieve is the below example, where main. to_string(); let (value, _suffix) = value::parse_lit_str(&repr); String::from(value) } And continues in the value module later in the file. You can use raw strings to disable this behavior. formatcp: format -like formatting (emits a &'static str ); takes the same primitives as concatcp. Nov 3, 2016 · Rustで標準出力はprintln! マクロで行うのですが、フォーマット指定がC言語などの printf とは異なります。 以下のあたりのドキュメントに詳しく書かれているのですが、自分でコードを書いていて迷ったりすることもあったのでまとめてみました。 The byte_string crate provides two types: ByteStr and ByteString. the string begins with a newline, remove the first line. When the format string is generated from some other expression this motivation for concise syntax is irrelevant. : Currently I’m using: This gives a visual indication of the target indentation, where the “2” is immediately under the Feb 21, 2018 · Saved searches Use saved searches to filter your results more quickly This RFC’s motivation for implicit named arguments is to give users a concise syntax for string formatting. ByteStr wraps a byte slice ([u8]). let some_string = indoc! {r#" First line. common. print("I have ${apples} apples. The Duration documentation explicitly states why Display is not implemented. Is there a way in rust to combine two strings (one raw, and one regular)? The C++ syntax (simply placing two Jan 14, 2023 · I want to display the players' name and score, but I cannot figure out how to print the name without the quotes: #[derive(Debug, Clone)] struct Player { name: String, score: i32, turn_c A ‘string’ is a sequence of Unicode scalar values encoded as a stream of UTF-8 bytes. A Rust source file describes a module, the name and location of which — in the module tree of the current crate — are defined from outside the source file: either by an explicit mod_item in a referencing source file, or by the name of the crate itself. The String you are creating is local to the function and you are trying to return a reference to it. a) deprecate referencing variable names without parentheses (e. A line-break is either a newline ( U+000A ) or a pair of carriage return and newline ( U+000D , U+000A ). Dec 7, 2021 · I don't think it is a good idea to manipulate filenames, paths and &OsStr in general with format!, because that requires you to convert to String with . That is, the type is &'static [u8; N], where N is the number of bytes in the represented string described below. You need to use display view, not debug (as it escapes character) and May 24, 2023 · While String::from () is making a String from the &str, and "foo". Jul 22, 2020 · TL;DR: I want to implement trait std::io::Write that outputs to a memory buffer, ideally String, for unit-testing purposes. Share Improve this answer Apr 26, 2023 · I want to write a multiline string in Rust which I can pass to the format macro ( format!) to produce a formatted string using two variable strings. let quotes = r#"And then I said: "There is no escape!""#; println!("{}", quotes); // If you need "# in your string, just use more #s in the delimiter. Although Rust doesn't provide dedicated syntax for multiline string interpolation, you can still achieve this using raw string literals and the format! macro. Specifically, the escape sequences are: If the backslash character is found, but the successive The wrap () function returns the individual lines, use fill () is you want the lines joined with '' to form a String. Both are great ways to make a String when you don't need to perform any formatting. let a = "AAA"; let b = format!("BBB {}", a); println(b); } // output: BBB AAA. To print text for custom types, more steps are required. unwrap(); } Sep 16, 2022 · syn appears to just use the Display impl on Literal and parses the output. Aug 10, 2018 · This means that the compiler has to tokenize the code before expanding any macros. If the first line is empty i. . Unlike [u8], its Display and Debug implementations show a string, not an array of numbers. Rust will automatically remove intended whitespace, as long strings are usually broken into multiple lines like this, with the whitespace being just for formatting purposes. Encodes some bytes into a mutable slice of bytes. Provide details and share your research! But avoid . The caller must ensure that the returned pointer is never written to. Encodes data as hex string using lowercase characters. The writer may be any value with a write_fmt method; generally this comes from an implementation of either the fmt::Write or the io::Write trait. What is the most direct way to format the characters as-is into the string without assuming any particular encoding? Something like iterating over the byte string and writing each character to stdout (without so much hassle). Aug 19, 2016 · I have a raw string literal which is very long. This is usually accessed via the parse method on &str. write(r#"This is an example of a line which is well over 100 characters in length. Use a File and read_to_string () to do it at runtime. It also suggests the best way to use it: The write! macro should be favored to invoke this method instead. Here, we used fmt::Display because the std library provides implementations for these types. A String object is solely meant to hold a valid UTF-8 encoded Unicode string: not all bytes pattern qualify. This will use the Display formatting trait. What is possible to do is to return a &str from a String, which is what you did in your code. A better solution would probably use str::escape_default. 0, the way to escape { and } is with another { or } write!(f, "{{ hash:{}, subject: {} }}", self. r#". You can see the parsing starts here. g Like format!, but with basic f-string interpolation Jul 10, 2015 · The Rust compiler is right (of course): there's no + operator for string literals. Also, the other way, unescaping is possible. format! (" {x}")) b) accept the inconsistency. let raw_str = r"Escapes don't work here: \x3F \u{211D}"; println!("{}", raw_str); // If you need quotes in a raw string, add a pair of #s. Jan 13, 2019 · how can one convert [a string] into a TokenStream. What you are trying to do is not possible. ByteString wraps a vector of bytes (Vec<u8>). Aug 18, 2016 · 2 Answers. Transforms special characters (like quotes) to escape sequences or to a raw string and builds literals. If you just want to do that in this case, sure, but I don't know something built in/some crate that does that. It uses the std::fmt syntax, which essentially consists of a formatting string and the arguments to format (a la C's printf). Format strings contain “replacement fields” surrounded by curly braces {} . Apr 24, 2020 · The format! macro needs to know the actual format string at compile time. The formatter for debug output is the ?, so you could create a string like this: format! (" {:?}", duration). While any String object can be converted to a &[u8], the reverse is not true. const NON_WORKING: &str = r#". Therefore, an index into the string’s bytes will not always correlate to a valid Unicode scalar value. Raw strings allow us to write a sequence of characters verbatim by starting with r#" and ending with "#. JSON is a very loose format where anything goes - arrays can hold mixed types, object keys can change types between API calls or not include some keys under some conditions. This way a raw string literal can be passed to format!() and still use the expected escapes. 一方, raw string を用いれば エスケープが一切必要ない, 書いたままの文字列 として解釈されます. The . A str with unchecked contents. This excludes using variable and statics, but also consts (which are known at compile time, but at a later compilation phase than macro expansion). ) However, in rust raw strings, escapes are disallowed. replace("", "\r") at runtime to create a new String with CRLF line terminators. Compare: String Interpolation – Wikipedia. Rust. to_str(), which will fail and break your code if provided with invalid unicode filenames, which unfortunately, are quite common, specially in languages that are written in almost-ASCII, but uses a few non-ASCII characters, like á, ß, ç, ø Sep 22, 2013 · The use cases described so far are: regexes, which have lots of backslashes; Windows paths, which have lots of backslashes; giant blobs of raw text, which may contain literally anything as often such blobs are generated by other programs or are programs in an unknown-to-rust other language; and format! string directives, which have lots of Dec 15, 2020 · 3. For example, you are trying to use str, which is an unsized type. The expression's type is a shared reference (with static lifetime) to an array whose element type is u8. This is explained (along with the rest of the formatting syntax) in the std::fmt documentation. Rust has two main types of strings: &str and String. let parsed = json :: parse ( r#". ok, that makes a lot of sense thnx Mar 11, 2023 · printf("%s", s); Line-breaks are allowed in string literals. Read more about formatting in Rust in the std::fmt module. ") # string interpolation. a type String slices Jun 18, 2016 · 3. This crate intends to avoid that friction. Right now, attempting to do so: May 27, 2018 · Since you were already using include_string!, I don't think that's an extra requirement. string str = @"Hello, \World May 11, 2023 · 1. Let’s talk about &str first. rs string literal contains a named parameter (e. fn main() {. plain. :: RawStr. You can do something like this: let s = match x {. Mapping that to idiomatic Rust structs introduces friction. org. As the compiler hinted, the created String is immediately dropped after its creation because it went out of the current scope and one way around could be an external variable that is not bounded to the match scope. Apr 9, 2022 · Hi all, In C++, there is a raw string syntax that looks like this: std::string query = R"sql( SELECT email FROM Users WHERE username = "foo"; )sql"; The sql part serves as a delimiter, similar to how # is used in raw Rust string literals: let query = r#" SELECT email FROM Users WHERE username = "foo"; "#; In addition to making it unnecessary to escape things like double-quotes, the string Nov 17, 2021 · Your "raw" string looks like a JSON string, so you should be able to deserialize it twice – The first time into a String, and the second time into your final data structure. One calls write! (or writeln! Jul 7, 2020 · This is fundamentally impossible in Rust, since it would otherwise be a use-after-free bug. security. In that case you need to implement the logic format yourself, with a new type. RawString. parse(). As of Rust 1. several"; is the same as "one line written over several". §Examples Jan 20, 2023 · String interpolation is an alternative to building string via concatenation, which requires repeated quoting and unquoting; [2] or substituting into a printf format string, where the variable is far from where it is used. Encoding and decoding hex strings. Unlike str, there are no guarantees about the contents being valid UTF-8. For example: extern crate byte_string; use byte_string:: ByteStr; fn main { let s = b"Hello, world!" This approach defaults to 2 spaces of indentation, which happens to be what you asked for in your question. Use regular instead of raw string literals and end your lines with \r, e. Allow arbitrary expressions only with parentheses. As string slices are a slice of bytes, the raw pointer points to a u8. Rustには文字列を表す型が二つあります。 一つはプリミティブ型のstr、もう一つが標準ライブラリが提供するStringです。 Jan 6, 2021 · 0. This would be useful for e. If you want linebreaks in the string you can add them before the \: let string = "multiple Raw string. One\ two three\ four. We use raw strings inside the generated file, but this can still fail if a filename were to contain the string "#. Aug 14, 2019 · include_str! works at compile time, statically inserting the file contents as a string literal in your code, so it can't use a runtime variable. I must be missing something simple. let some_string = indoc! {" First line. This is surprisingly difficult to find. Feb 24, 2018 · Allow escaping space in strings. In rust, raw string literals are surrounded by r"", and add # if you need to use quotes. Oct 26, 2015 · It stands for "indented document. Here's the MCVE that I constructed: extern crate regex; use std::io; use regex::Regex; static TEXT: &'static str = "Twas the best of times"; Aug 15, 2021 · In both cases the strings have 1 "interpolation" placeholder. Integer and floating point literals are stringified in order to be concatenated. Jan 15, 2024 · Rust の Raw String Literal の使い道. For your example, should work. PlainLoginModule. raw_string. into () is turning the &str into a String. Dec 16, 2014 · The issue is that while you can indeed convert a String to a &[u8] using as_bytes and then use to_hex, you first need to have a valid String object to start with. I've tried something like: const FORMAT_A: &'static str = "a: {}"; static FORMAT_B: &a Jan 4, 2017 · When printing a u8 array in Rust using println!("{:?}", some_u8_slice); this prints the numeric values (as it should). This pointer will be pointing to the first byte of the string slice. It operates on structure defined like this: Aug 20, 2023 · An example of a raw string will look like this: let raw_string = r#”This is a raw string. proc_macro2::TokenStream use proc_macro2; // 0. 0 1 or later, check out the const_format crate on ( crates. If you enable the hyphenation Cargo feature, you can get automatic hyphenation for a number of languages: use hyphenation::{Language, Load, Standard}; use textwrap::{wrap, Options, WordSplitter}; let text = "textwrap: a small Sep 22, 2022 · chrefr September 22, 2022, 7:15am 2. rs team Mar 17, 2024 · Struct proc_macro :: TokenStream. subject) The literal characters { and } may be included in a string by preceding them with the same character. Apr 5, 2015 · Don't try to learn Rust without first reading the free book The Rust Programming Language and writing code alongside. Apr 14, 2021 · As mentioned in the comments, anything which has a Display instance automatically gets a ToString instance, so you can call to_string to get a string and then truncate on any value which implements Display. That's why it's not possible to have a runtime expression as a format string. For your example, it would look something like this: Meanwhile Rust procedural macros are expected to return the type proc_macro::TokenStream. The same convention is used with print! and write! macros, depending on the intended destination of the string; all these macros internally use format_args!. これは, 引用符の前に r + 0 個以上の # を配置し, raw string が終了したら引用符に加えて同じ個数の # を置くことによって定義されます. Encodes data as hex string using uppercase characters. Rust has a common trait for converting strings into values when that conversion might fail: FromStr. pub fn value(&self) -> String {. Sep 29, 2013 · To optimally convert a Vec<u8> possibly containing non-UTF-8 characters/byte sequences into a UTF-8 String without any unneeded allocations, you'll want to optimistically try calling String::from_utf8() then resort to String::from_utf8_lossy(). apples = 4. raw string の前後につける # の数は任意なので, 文字列中 Was writing some tests to validate serde is serializing correctly (didn’t like the serde_test stuff personally) and was using raw string literals in my tests to assert against. repr. May 9, 2023 · 9th May 2023. Support for inline assembly is stable on the following architectures: x86 and x86-64. This macro takes any number of comma-separated literals, yielding an expression of type &'static str which represents all of the literals concatenated left-to-right. let repr = self. let new_len = input. I don't want to escape all those backslashes, and I'd rather use a raw string (r""). That would be a very strange decision for a systems language. qc jg ep xu ni qf gg ak vg zd