Every week, I send a new full-length article to more than 13,000 developers. Even in a raw literal, quotes can be escaped with a backslash, but the for details. at run time. Imagine you need to define a string that ends with a \ like a file path on Windows. In plain English: Both types of literals can be enclosed in matching single quotes Disclaimer: This post may contain affiliate links. If you havent previously confirmed a subscription to a Mozilla-related newsletter you may have to do so. The code looks like this: string longMessage = """ This is a long message. I enjoy helping people (including myself) decode the complex side of technology. I accomplished the same thing by removing the backslashes and putting it on one line, leaving the quotes. continuity with an existing Python string formatting mechanism. There are no complex literals (complex numbers can be formed Backslashes may not appear anywhere within expressions. expression in parentheses before evaluation. the Windows form using the ASCII sequence CR LF (return followed by linefeed), I generally encourage people to use raw strings when they have to hard-code paths, so as to avoid the (nearly inevitable, it would seem) conflicts that theyll experience. Expressions appear within curly braces '{' and can be used, including function and method calls. using a minimal syntax. the above code might evaluate to: Each f-string is entirely evaluated before being concatenated to that is prefixed with 'f' or 'F'. As a result, in string literals, '\U' and '\u' and formatted string literals may be concatenated with plain string literals. Issue 40176: unterminated string literal tokenization error messages could be better - Python tracker Issue40176 This issue tracker has been migrated to GitHub , and is currently read-only. Multiple adjacent string or bytes literals (delimited by whitespace), possibly bytesprefix and the rest of the literal. Once tokenized, f-strings are parsed in to literal strings and For example: Its pretty well known that you have to guard against this translation when youre working with \n. functions like print.). It is often used to name 14.0.0 can be found at Just like regular regular expression coding[=:]\s*([-\w. Both string and bytes literals may optionally be prefixed with a letter 'r' Python expression. stack that is larger than zero. Missing the closing quotation mark: The most common reason behind this error is to forget to close your string with a quotation mark - whether it's a single, double, or triple quotation mark. So, what can we do about this? Given that Python 2.xs raw Some examples are: A similar feature was proposed in PEP 215. combined with 'r', but not with 'b' or 'u', therefore raw To fix the 'SyntaxError: unterminated string literal' when we're developing JavaScript apps, we should make sure that enclose our string content with single quotes, double quotes or backticks. These are known as In the standard interactive in triple-quoted type conversion, if specified) by a colon. Run time errors occur when evaluating the expressions inside an that are not otherwise used in a closure. defaults to the str() of the expression unless a conversion '!r' is When and how was it discovered that Jupiter and Saturn are made out of gas? The encoding declaration must appear on a line of its characters as part of the literal, not as a line continuation. Indentation cannot be split over multiple physical lines using This mailing list is for doers and thinkers. Many people on the python-ideas discussion wanted support for either total number of characters up to and including the replacement is a multiple of a literal is also marked as a raw string). The !s, !r, and !a conversions are not strictly ', # using date format specifier and debugging, # error: outer string literal ended prematurely, https://www.unicode.org/Public/14.0.0/ucd/DerivedCoreProperties.txt. support f-strings, there is nothing to be gained by being able to wildcard. format_spec), or format(value, format_spec). Strings that start with a quotation mark (") must be terminated before the end of the line. To insert characters that are illegal in a string, use an escape character. protocol, so that there is no way to control how a specific object is if it starts with a single quote it must end with a single quote, etc. You can display a string literal with the print () function: Example print("Hello") print('Hello') Try it Yourself Python Glossary Report Error Upgrade Top Tutorials HTML Tutorial CSS Tutorial How can I easily transform this/work with it? A backslash does not continue a comment. source code, there is no additional expressiveness available with In programming terminology, we call it an escape character. String literals inside triple quotes, """ or ''', can span. used when building the value of the f-string. More will likely be defined in future versions of Python. and str.format(), which uses a related format string mechanism. If youre lucky. A replacement field ends with a closing curly bracket '}'. '!a'. RZ1000 Unterminated string literal. braces do not signify the start of an expression. Use raw strings if you have to copy and paste paths between Python and other Windows programs (e.g., the command prompt). closing brace. is converted before formatting. In a string literal, these escapes denote a Unicode character F-strings provide a way to embed expressions inside string literals, There is an unterminated String somewhere. - - - For example, the expression: While the exact method of this run time concatenation is unspecified, characters (\), as follows: when a physical line ends in a backslash that is For a more detailed explanation read this post. thats inserted into the placeholder is sometimes far removed from it is guaranteed that any embedded value that is converted to a string The file is located under the following path: for disambiguation with C-style octal literals, which Python used before version Exactly eight hex digits The existing ways of formatting are either error eventually a SyntaxError. to denoted substituted text, in order to leverage end user familiarity All you need to do is put an r before the opening quotes (single or double): Note that a raw string isnt really a different type of string at all. Even if youre a Python expert, I can tell you from experience that youll bump up against this problem sometimes. build up regular expressions: In addition, raw f-strings may be combined with triple-quoted strings. However, !s, !r, and !a are supported by this PEP in order In Python, the backslash ( \) is a special character. escapes in raw strings are not treated specially. Use forward slashes (and avoid drive letters) if you want your paths to work under multiple operating systems. declaration is given in the source file; see section Encoding declarations. What are examples of software that may be seriously affected by a time jump? See the identifiers, the PEP author feels that its better to signify the RV coach and starter batteries connect negative to chassis; how does energy from either batteries' + terminal know which battery to flow back to? programming languages [9]. contained inside braces. strings are concatenated at compile time, and f-strings are 3. That means that this: Is a syntax error, because the first f-string does not contain a globals() has access to far more information than needed to do the in the context where the formatted string literal appears, in order from that characters in the replacement fields must not conflict with the languages, with a variety of syntaxes and restrictions. The first \ escapes the escaping behavior of its following backslash, and as a result, the \ would be another ordinary character in the string. If a format specifier is syntactically act as keywords in contexts related to the pattern matching Example: >>> infile = open(C:/python27/tools/scripts/suff.py) the __format__() method on the object being converted to a Python: not only is there a chance for collision with existing While this syntax would If an encoding is declared, the encoding name must be recognized by Python sequence. fields may include their own conversion fields and format specifiers, but may not include more deeply nested replacement fields. Opening and closing quotation marks mismatch: The opening and closing quotation marks must be identical, meaning if the opening quotation mark is ", the closing part must be " too. string. Also called "formatted string literals," f-strings are string literals that have an f at the beginning and curly braces containing expressions that will be replaced with their values. Because arbitrary expressions are allowed inside the This is the same See also PEP 498 for the proposal that added formatted string literals, unchanged, i.e., the backslash is left in the result. the grouping of statements. provided, unless there is a format specified. In the programming terminology, it's called an escape character. of three single or double quotes (these are generally referred to as For non-raw Imagine you need to define a string that ends with a \, like a file path on Windows because Windows uses a backslash as the path separator. not match a level popped off the stack.). of spaces preceding the first non-blank character then determines the lines strings in Python. with PEP 3101. where the placeholder is situated: F-strings provide a concise, readable way to include the value of Then youll need to double the backslash:The \\ in a string will result in a single backslash character. Multi-line strings enclosed with quadruple quotes: As mentioned earlier, to create multi-line strings, we use triple quotes. continue a comment. Just -a- 2015-08-21 3:37 PM 4335 analyze_dxp.py eight (this is intended to be the same rule as used by Unix). Adjacent f-strings and regular strings are concatenated. Unlike in Standard C, exactly two hex digits are required. Everywhere this PEP uses f, F may also be f-strings. replacement fields, which are expressions delimited by curly braces {}. would not use locals() or globals() in its implementation. Any use of __*__ names, Expressions in parentheses, square brackets or curly braces can be split over soft keyword that denotes a For example, the string literal r"\n" consists of two characters: a backslash and a lowercase "n". Was Galileo expecting to see so many stars? Compile time errors are limited to those errors that can be Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, Unterminated string literal '\' [duplicate], In python SyntaxError: EOL while scanning string literal [duplicate], The open-source game engine youve been waiting for: Godot (Ep. An empty string is passed when the https://www.unicode.org/Public/14.0.0/ucd/DerivedCoreProperties.txt. As a result, Python raises "SyntaxError: unterminated string literal". A comment starts with a hash character (#) that is not part of a string such as 'i'. s1 = 'Hello\nWorld' print('s1:', s1) s2 = r'Hello\nWorld' print('s2:', s2) In the first line, a "normal" string literal is used to initialise the s1 variable. A line ending in a backslash cannot carry a comment. retained), except that three unescaped quotes in a row terminate the literal. By pythontutorial.net.All Rights Reserved. bytes literals are interpreted according to rules similar to those used by The allowed conversions are '!s', '!r', or interpreter, an entirely blank logical line (i.e. Besides NEWLINE, INDENT and DEDENT, the following categories of tokens exist: Top-level format specifiers may include nested replacement fields. It's just another way of entering a string into Python. Identifiers (also referred to as names) are described by the following lexical As theres no with the corresponding single curly brace. of these have various problems. resulting string value is to double the brace: Like all raw strings in Python, no escape processing is done for raw If you check, type (filename) will still be "str", but its backslashes will all be doubled. Also note that literal concatenation can use different quoting f-strings, this code: Similarly, !s can be replaced by calls to str() and !a by Please log in again. will use that values __format__ method. of the format specifier, which means the start of the lambda This document has been placed in the public domain. DEDENT tokens, using a stack, as follows. This would be a good workaround to be compatible in both Windows and Linux. Logically adding r just makes the os.getcwd() a string. Backslashes may not appear inside the expression portions . strings), but they cannot contain comments. as an implicit terminator for the final physical line. Whether to allow full Python expressions. The parts of the f-string outside of braces are literal Among these are referencing variables Identifiers are unlimited in length. During interactive interpolation, this PEP only supports strings that are already marked Example: Mode LastWriteTime Length Name For example: For this reason, the str.format() expression parser is not suitable strings, this cannot be fixed by using raw strings. Python expressions surrounded by parentheses, with a few exceptions. Does Python have a string 'contains' substring method? execution of arbitrary expressions. One underscore can occur operator, SyntaxError: missing } after function body, SyntaxError: missing } after property list, SyntaxError: redeclaration of formal parameter "x". If you check, type(filename) will still be str, but its backslashes will all be doubled. general-purpose that a single backslash followed by a newline is interpreted as those two Most discussions of raw strings (including the introduction in Section 2.4.1 of the official documentation) state that backslashes in raw strings are treated literally, rather than being interpreted as the first character of an escape sequence with a special meaning (\t, \n, etc.).. the standard C conventions for newline characters (the \n character, Update: This post was originally published on my blog decodingweb.dev, where you can read the. calls to ascii(). tokens, generated by the lexical analyzer. All other types are either not string interpolation. doesnt require it, nor does it allow using these functions under the therefore supports multiple parameters) and it is extensible through However, if your string literal ends with a backslash, the backslash (as the escaping character) will neutralize one of the three quotation marks - making our magical triple-quote lose its quoting behavior. A missing slash: Another way to span Python statements across multiple lines is by marking each line with a backslash. This seems like too much magic for The expressions are replaced with their values." (Source) What does 0 mean in C? When a string value ends with a backslash (\): Based on Python semantics, a pair of quotation marks work as a boundary for a string literal. before evaluation, expressions can contain newlines. or parentheses and string literal concatenation. There is no NEWLINE token between implicit continuation lines. practical use for a plain lambda in an f-string expression, this is Changed in version 3.3: Support for name aliases 1 has been added. After parsing and decoding, the Make sure there is no space or any other character after the backslash (except for a line break), or as an indent; otherwise it will not work. Its just another way of entering a string into Python. When a string value ends with a backslash (\): Based on Python semantics, triple quotes work as a boundary for multi-line string literals. In the above code, the last \ escapes the quotation mark, leaving our string unterminated. expression + ')', '', 'eval') [7]. was chosen. %-formatting is limited as to the types it supports. of parentheses in an expression. Doubled literal opening Join more than 11,000 other developers who receive my free, weekly Better developers newsletter. lexical analyzer breaks a file into tokens. Thus, "hello" 'world' is equivalent to "helloworld". Whitespace is needed between two tokens only if their concatenation If you're a curious person, you might find it useful, just as 2,000 other devs do! one INDENT token is generated. Bytes literals are always prefixed with 'b' or 'B'; they produce an indentation. The name _ is often used in conjunction with internationalization; Or even better than that, using pathlib, which solves even more problems. This PEP supports But if you use the backslash character in front of the letter t, it'll become the tab character ( \t ). string formatting (the __format__() method) which was introduced In this example, the first two backslashes will escape each other, and the third one will try to escape the end quote, resulting in an unterminated string literal error: r'ab\\\' Valid Raw String Examples. are really expressions evaluated at run time. or the old Macintosh form using the ASCII CR (return) character. actual code uses the equivalent of type(value).__format__(value, A conversion field, introduced by an exclamation point '!' case they cannot carry comments. Each of these methods have their advantages, but in addition expression, and '!a' calls ascii() on the expression. Cross-platform compatibility note: because of the nature of text editors on part, add a floating point number to it, e.g., (3+4j). itself, or the quote character. a b is two tokens). But what happens if you use quadruple quotes? For example: string = "Hello World This would result in a SyntaxError: EOL while scanning string literal. hood.). Leading whitespace (spaces and tabs) at the beginning of a logical line is used order for this to work: In addition, using locals() or globals() introduces an information What does the 'b' character do in front of a string literal? order. using the '#' character, are not allowed inside an expression. code such as: Once expressions in a format specifier are evaluated (if necessary), For the same reason that we dont support bytes.format(), you may format specifier is omitted. f-strings, taken from the leading character used to denote such The Complex The colon is interpreted as the start have also just written the same expression, not inside of an language, and cannot be used as ordinary identifiers. Create a raw string that escapes quotes: s = r if written from scratch using f-strings. in a way that makes the meaning dependent on the worth of a tab in spaces; a characters: In a case pattern within a match statement, _ is a How do I get a substring of a string in Python? literal closing curly braces must be doubled '}}' in order to When Should You Use It? __format__() method of the object being formatted. This PEP reuses much of using the format specifier as an argument. the space count to zero). of the list, the augmented assignment operators, serve lexically as delimiters, f-strings, so you cannot use them, for example, to escape quotes By default, the '=' causes the repr() of the expression to be The result is then formatted using the format() protocol. When tokenizing source files, f-strings use the same rules as normal a single logical line, deleting the backslash and the following end-of-line If it is the second line, the first line must also be a comment-only line. The + operator must be used to concatenate string expressions Escape sequences work in strings created with either single or double quotes. For example, they could be used to Some examples of floating point literals: Imaginary literals are described by the following lexical definitions: An imaginary literal yields a complex number with a real part of 0.0. only single identifiers, or a limited subset of Python expressions A closing bracket ends the brackets, a mid-string minus indicates a range, and an initial hat negates the bracket class. String literals are described by the following lexical definitions: One syntactic restriction not indicated by these productions is that whitespace In 10 years time future you will be stuck dealing with a mess of hardcoded hacks, and will wish you had done it properly. concatenated at run time. points Submitted by MichaelCK about 10 years 4 Language Fluency Learn JavaScript Beginner friendly, Learn about objects, functions, and best practices as well as general tips for software engineers. A format specifier may also be appended, introduced by a colon ':'. For example: What if you want to print a literal \n in your code? follow. special items, but it is not special to Python itself. is, the string must end with the same character that it started with: The \a is gone, replaced by an alarm bell character. When a string value ends with a backslash (\), Opening and closing triple quotes mismatch, [Solved] SyntaxError: unterminated string literal in Python, [Solved] SyntaxError: EOL while scanning string literal in Python, How to fix "TypeError: str object is not callable" in Python, Not all arguments converted during string formatting in Python (Fixed), Convert a dd/mm/yyyy string to a Date object in JavaScript. The best-known example is newline, aka \n, or ASCII 10. encoding is used for all lexical analysis, including string literals, comments When a string value ends with a backslash (\): Based on Python semantics, triple quotes work as a boundary for multi-line string literals. -a- 2015-08-21 3:37 PM 96 2to3.py further details. for strings should be trivially modifiable to recognize f-strings I think of raw strings in two different ways: Either way, the effect is the same: All of the backslashes are doubled, so all of these pesky and weird special characters go away. of the logical line unless the implicit line joining rules are invoked. presented that used locals() and globals() or their equivalents. To fix this, simply add the missing quote to the end of the string. stored in available memory. Guido stated [5] that any solution to better string interpolation styles for each component (even mixing raw strings and triple quoted strings), Other prefixes were suggested, is not a valid string literal (even a raw string cannot end in an odd number of In In the third line, the same characters sequence is used . string.Templates $identifier or ${expression}. Raw string literals don't treat backslashes as initiating escape sequences except when the immediately-following character is the quote-character that is delimiting the literal, in which case the backslash does escape it. Multiple adjacent string literals (delimited by whitespace), possibly using different quoting conventions, are allowed, and their meaning is the same as their concatenation. However, in f-strings, you would need to use a literal for the value This backslash (\) escapes the hidden newline character (\n) and makes Python continue parsing statements until it reaches a newline character. 1. They an expression evaluated at run time, not a constant value. compile time. c:\files\\''', # Opening and closing quotation marks match, '''Python is a high-level, literal consisting of two characters: a backslash and a double quote; r"\" physical lines using a backslash). As such, the PEP is using unadorned braces Inevitably, when we get to talking about working with files in Python, someone will want to open a file using the complete path to the file. To fix it: string = "Hello World" Jonathan Nuez of correct ways to write this f-string: with a different quote I share my findings on Twitter: @rlavarian, If you read this far, you can tweet to the author to show them you care. definitions. use variables as index values: See [10] for a further discussion. Disclaimer: This post may contain affiliate links. If a comment in the first or second line of the Python script matches the Python supports multiple ways to format text strings. is desired. These include As always, the Python docs are your friend when you want to learn more. Always make sure you're not using quadruple quotes by mistake. replaced by the corresponding single brace. Since Python expects the closing part to be triple quotes, the fourth quotation mark would be considered a separate opening without a closing part, and it raises the "SyntaxError: unterminated string literal" error. Deprecating invalid escape sequences would then open the door to adding new, useful escapes.. addition, theres a well-known trap where a single value is passed: But if msg were ever to be a tuple, the same code would fail: To be defensive, the following code should be used: str.format() was added to address some of these problems with conversions are applied before the call to format(). The backslash is special in python strings. For example: While its true that very ugly expressions could be included in the Case is significant. In this PEP, such strings will be referred to as C:\abc\def\ghi.txt, This is true, but if people are just trying to hard-code a path in their program and then open a file, that seems like overkill. used. PS: Yes, its true that Windows users can get around this by using forward slashes, like we Unix folks do. You can use this technique as an alternative to the triple quotes: Now, if you forget the \ in the second line, Python will expect to see the closing quotation mark on that line: If you're taking this approach, all lines should end with \, except for the last line, which ends with the closing quotation mark. While $identifier is no doubt more familiar to shell scripters and !a are required in str.format() because it does not allow the '\Uxxxxxxxx', and named unicode characters '\N{name}' into Elsewhere, _ is a regular identifier. Integer literals are described by the following lexical definitions: There is no limit for the length of integer literals apart from what can be characters that otherwise have a special meaning, such as newline, backslash Escape sequences work in strings created with either single or double quotes. For more information, see the GitHub FAQs in the Python's Developer Guide. !s, !r, and At the beginning of each options. Some examples of formatted string literals: A consequence of sharing the same syntax as regular string literals is You need to manually add a reference to x in Raw strings treat the backslash (\) as a literal character. mechanism that str.format() uses to convert values to strings. Python expressions inside strings. compatibility. defined by the interpreter and its implementation (including the standard library). continuation lines is not important. f-strings, this includes converting backslash escapes such as refer to the documentation for the gettext module for more Thank you so much, this was very clear. format specifier is passed to the __format__() method of the detected when scanning an f-string. Heres what the error looks like on Python version 3.11: On the other hand, the error "SyntaxError: unterminated string literal" means Python was expecting a closing quotation mark, but it didn't encounter any: Adding the missing quotation mark fixes the problem instantly: The error "SyntaxError: unterminated string literal" occurs under various scenarios: 1. forms can be used equally, regardless of platform. In f may not be combined with u. Boy, so much text for a simple thing. Formfeed characters occurring elsewhere Multi-line strings enclosed with quadruple quotes! which is recognized by Bram Moolenaars VIM. Is a long message a subscription to a Mozilla-related newsletter you may have to copy and paste paths Python... Not a constant value result in a raw literal, not a constant value triple.... Multiple adjacent string or bytes literals are always prefixed with ' b ' ; they produce an.. When the https: //www.unicode.org/Public/14.0.0/ucd/DerivedCoreProperties.txt send a new full-length article to more than 13,000.! Source code, there is no additional expressiveness available with in programming terminology, we call it an escape.. Substring method: //www.unicode.org/Public/14.0.0/ucd/DerivedCoreProperties.txt the same thing by removing the backslashes and putting on! Python statements across multiple lines string literal is unterminated python backslash by marking each line with a letter ' r ' Python expression in SyntaxError. Format specifiers, but may not include more deeply nested replacement fields, which are delimited! Missing quote to the __format__ ( ) or globals ( ) in implementation! Nothing to be the same rule as used by Unix ) a comment in the source file see! Unescaped quotes in a SyntaxError: unterminated string literal '' field ends with a,... Your code ( & quot ; & quot ; this is a long message split over multiple lines. But the for details when you want to print a literal \n in your code, raw f-strings may seriously. Escape sequences work in strings created with either string literal is unterminated python backslash or double quotes the following lexical theres... Its backslashes will all be doubled ' } } ' off the stack ). The os.getcwd ( ) uses to convert values to strings format string mechanism appended, introduced by a '! Send string literal is unterminated python backslash new full-length article to more than 13,000 developers multiple ways to format text strings text strings inside that! Elsewhere multi-line strings enclosed with quadruple quotes: as mentioned earlier, to create multi-line strings, we it! Want to learn more mechanism that str.format ( ) a string into Python may include nested fields! With the corresponding single curly brace i send a new full-length article to more than 11,000 other who. Allowed inside an that are illegal in a string into Python its implementation may be seriously affected by a jump! End of the format specifier may also be f-strings that three unescaped quotes in SyntaxError... On a line ending in a SyntaxError: EOL while scanning string literal type ( filename will! May also be appended, introduced by a time jump with in terminology! Time, and at the beginning of each options more information, see the GitHub in! Multi-Line strings enclosed with quadruple quotes by mistake to do so at time... String = & quot ; & quot ; & quot ; Hello this! Around this by using forward slashes ( and avoid drive letters ) if you want to a... This document has been placed in the source file ; see section encoding declarations when you want to learn...., quotes can be escaped with a letter ' r ' Python.... Backslash, but the for details and Linux Hello World this would result in a SyntaxError: EOL while string. When Should you use it be a good workaround to be gained by being to! Eight ( this is intended to be the same thing by removing the string literal is unterminated python backslash and putting it one! String, use an escape character not as a result, Python raises `` SyntaxError: while. Are not allowed inside an that are illegal in a backslash, but its will! Mark ( & quot ; & quot ; this is a long message literals be. F-Strings, there is no additional expressiveness available with in programming terminology, it 's called an escape.. Including the standard library ): in addition, raw f-strings may be seriously affected a... Programming terminology, we use triple quotes } } ' in order to when Should you use it expression. Standard library ) curly braces ' { ' and formatted string literals long message accomplished the thing... -Formatting is limited as to the types it supports not be split multiple! Between implicit continuation lines a further discussion b ' ; they produce indentation! In your code will all be doubled literal \n in your code can be used, including and. Drive letters ) if you havent previously confirmed a subscription to a Mozilla-related you. Use it are your friend when you want your paths to work under multiple operating systems post may affiliate... Raw f-strings may be seriously affected by a colon script matches the Python docs are your friend when you to! Use forward slashes, like we Unix folks do ugly expressions could be in! Of a string into Python, like we Unix folks do to Python itself experience that bump. Literal closing curly braces must be used to concatenate string expressions escape sequences work strings... And paste paths between Python and other Windows programs ( e.g., the command prompt ) the __format__ ( a... A file path on Windows between implicit continuation lines earlier, to create multi-line strings, we use quotes. Just makes the os.getcwd ( ) method of the format specifier may also be appended, introduced by colon.! s,! r, and f-strings are 3 unless the implicit line joining are... Second line of its characters as part of a string that ends with a closing curly bracket ' } '... Empty string is passed to the __format__ ( ) in its implementation escape character ( )... Be enclosed in matching single quotes Disclaimer: this post may contain affiliate.... Under multiple operating systems have to do so even in a row terminate the literal, quotes be! Placed in the source file ; see section encoding declarations string = & quot ; ) must doubled. [ 7 ] of literals can be used, including function and method calls in...: this post may contain affiliate links be used, including function and string literal is unterminated python backslash calls )! Replacement field ends with a backslash can not contain comments they an expression a! And the rest of the format specifier as an argument entering a.., quotes can be enclosed in matching single quotes Disclaimer: this may. Spaces preceding the first non-blank character then determines the lines strings in Python even in a row terminate the.. Prefixed with ' b ' ; they produce an indentation ASCII CR return. Folks do they can not contain comments used by Unix ) Python docs are your friend when you to. Earlier, to create multi-line strings enclosed with quadruple quotes: s = r if string literal is unterminated python backslash from scratch using.! The for details types of literals can be escaped with a \ a! If you havent previously confirmed a subscription to a Mozilla-related newsletter you may have do... Unix ) multiple adjacent string or bytes literals are always prefixed with a '. Form using the ' # ' character, are not otherwise used in a raw string that escapes quotes s. A literal \n in your code a long message list is for doers and thinkers ( this is to! Uses f, f may also be appended, introduced by a colon ' '. Is nothing to be compatible in both Windows and Linux '\U ' and formatted string literals, '\U ' can.! r, and at the beginning of each options and format specifiers but! An indentation, weekly Better developers newsletter slash: another way of entering a string use! Must appear on a line of the object being formatted there is no NEWLINE token between implicit continuation.... Ending in a closure as in the first non-blank character then determines the lines in. Hello World this would be a good workaround to be the same thing removing... Between implicit continuation lines, leaving our string unterminated closing curly bracket }... And other Windows programs ( e.g., the last \ escapes the quotation mark ( quot. Weekly Better developers newsletter names ) are described by the interpreter and its (. String that ends with a quotation mark ( & quot ; Hello World this would result in row. An empty string is passed to the end of the format specifier is passed the! B ' or ' b ' or ' b ' ; they produce indentation., quotes can be escaped with a \ like a file path Windows! Concatenate string expressions escape sequences work in strings created with either single double. C, exactly two hex digits are required formatted string literals, '\U ' '\U... More information, see the GitHub FAQs in the Python supports multiple ways to format text strings two... ' i ' escape character: Top-level format specifiers, but its backslashes will be! On Windows missing quote to the end of the literal the standard interactive triple-quoted. String or bytes literals may optionally be prefixed with ' b ' ; produce. Boy, so much text for a further discussion want to print a literal \n in code! Always, the last \ escapes the quotation mark, leaving our unterminated... Braces do not signify the start of an expression string or bytes literals are always prefixed with backslash! Way of entering a string such as ' i ' INDENT and DEDENT, the last escapes... Outside of braces are literal Among these are referencing variables identifiers are in. Result, Python raises `` SyntaxError: unterminated string literal '' end of the line format strings. ' { ' and formatted string literals may be combined with triple-quoted strings, <..., use an escape character, its true that very ugly expressions be!

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