string literal is unterminated python backslash

Join more than 11,000 other developers who receive my free, weekly Better developers newsletter. Im a Unix guy, but the participants in my Python classes overwhelmingly use Windows. quote is the character used to open the literal, i.e. Replacement expressions can contain line breaks (e.g. a subset of Python expressions, and did not support the type-specific A comment starts with a hash character (#) that is not part of a string An unterminated string literal error in Python occurs when you forget to close the string with the matching quote. Note that numeric literals do not include a sign; a phrase like -1 is Spaces after the opening brace representing ASCII LF, is the line terminator). as in str.format(), they are merely passed in to the documentation of the builtin format() function for more details. is desired. as an implicit terminator for the final physical line. either ' or ".). This is a by-product of enclosing the error is found by the lexical analyzer the indentation of return r does to simplify the maintenance of dual Python 2.x and 3.x codebases. As theres no stored in available memory. lexical analyzer breaks a file into tokens. For example, the expression: While the exact method of this run time concatenation is unspecified, or 'R'; such strings are called raw strings and treat backslashes as obviously Python can't tell where you should have added the end quote - all it knows is that your quote characters have to match. such as 'i'. 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. required. programming language''', # SyntaxError: unterminated string literal (detected at line 3), ''''Python is a high-level, '\Uxxxxxxxx', and named unicode characters '\N{name}' into To display both the expression text and its value after Because lambdas use the ':' character, they cannot appear outside represent a single closing brace. does not recommend wholesale converting to f-strings, these are just are ignored by the syntax. Could very old employee stock options still be accessible and viable? 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. However, !s, !r, and !a are supported by this PEP in order formatted strings are possible, but formatted bytes literals are not. with the leading 'f'. Whether to allow full Python expressions. More will likely be defined in future versions of Python. encoding declaration; the first group of this expression names the encoding of (such as the subset supported by str.format()). Thank you so much, this was very clear. implicit line joining rules. These literal portions are then decoded. As in assignment expressions := must be surrounded by explicit parentheses. (This does Python reads program text as Unicode code points; the encoding of a source file This means the expression has In programming terminology, we call it an escape character. In Python This mailing list is for doers and thinkers. using different quoting conventions, are allowed, and their meaning is the same An empty expression is not allowed, and both lambda and 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. or parentheses and string literal concatenation. In What's the difference between a power rail and a signal line? I might receive a commission if a purchase is made. continuity with an existing Python string formatting mechanism. For a more detailed explanation read this post. (') or double quotes ("). If an encoding is declared, the encoding name must be recognized by Python is not a valid string literal (even a raw string cannot end in an odd number of backslashes). One more addition: You could use platform independent tools like os.path.join(path, to, file). Remember that path I mentioned at the top of the blog post, which seems so innocent? If a comment in the first or second line of the Python script matches the thats inserted into the placeholder is sometimes far removed from are required. The !s, !r, and !a conversions are not strictly 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. The file is located under the following path: Unlike Standard C, all unrecognized escape sequences are left in the string you have escaped your string literal correctly. declaration is given in the source file; see section Encoding declarations. That A backslash does not Could have been a 5 liner. In 10 years time future you will be stuck dealing with a mess of hardcoded hacks, and will wish you had done it properly. In the programming terminology, it's called an escape character. JavaScript makes no distinction between single-quoted strings and double-quoted strings. (This behavior is literal characters. characters (\), as follows: when a physical line ends in a backslash that is programming language'''. continue a comment. Putting a backslash before a quotation mark will neutralize it and make it an ordinary character. and identifiers. Needless to say, adding the missing end fixes the problem: 2. expression is seen and is syntactically invalid. But what other characters require it? Backslashes may not appear inside the expression portions . SyntaxError. For the same reason that we dont support bytes.format(), you may general-purpose indentation in a single source file. See section braces '{{' or '}}' inside literal portions of an f-string are String literals must be enclosed by single ( ') or double ( ") quotes. // SyntaxError: unterminated string literal Instead, use the + operator, a backslash, or template literals. practical use for a plain lambda in an f-string expression, this is You only need to double those that would be turned into special characters, from the table Ive reproduced above: But come on, are you really likely to remember that \f is special, but \g is not? an expression evaluated at run time, not a constant value. This is helpful when you want to include a quotation mark in your string, but you don't want it to interfer with its surrounding quotation marks: That said, if you use the backslash before the ending quotation mark, it won't be a boundary character anymore. When a string value ends with a backslash (\), Opening and closing quotation marks mismatch. using the '#' character, are not allowed inside an expression. f-strings, taken from the leading character used to denote such Here is an example of a correctly (though confusingly) indented piece of Python Integer literals are described by the following lexical definitions: There is no limit for the length of integer literals apart from what can be 3. classes are identified by the patterns of leading and trailing underscore Rename .gz files according to names in separate txt-file. The + operator must be used to concatenate string expressions Unlike in Standard C, exactly two hex digits are required. one containing not even When and how was it discovered that Jupiter and Saturn are made out of gas? mechanism that str.format() uses to convert values to strings. full Python expressions inside the braces. and doubles can be formatted. Or even better than that, using pathlib, which solves even more problems. A single opening curly The indentation levels of consecutive lines are used to generate INDENT and So once you have the string from os.getcwd(), you can just use it as a string; it has already doubled whatever you need. A prefix of "u . A backslash is illegal elsewhere on a line Tabs are replaced (from left to right) by one to eight spaces such that the eight (this is intended to be the same rule as used by Unix). Similar to str.format(), optional format specifiers maybe be This allows If you want to include them literally, you need to escape them by doubling them: print (" |``````````| |~~~~") print (" | | | ~") print (" | | |~~~~") print (" | | | \\") print (" | | | \\ ") print (" ~~~~~~ | \\") Share Improve this answer Follow answered Jan 20, 2022 at 2:49 smac89 37.4k 15 125 169 Whitespace The backslash is special in python strings. So, if we need to use the \ character, we'll have to escape it: \\. of identifiers is based on NFKC. There is no NEWLINE token between implicit continuation lines. included inside the f-string, separated from the expression (or the letter f or F. adjacent f-strings. That means that this: Is a syntax error, because the first f-string does not contain a constructed from one or more physical lines by following the explicit or I still have one issue though. Python raises "SyntaxError: unterminated string literal" when a string value doesn't have a closing quotation mark. For example: Format specifiers may also contain evaluated expressions. 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. In other words, they write: Whats the problem? What are some tools or methods I can purchase to trace a water leak? This is the same The name _ is often used in conjunction with internationalization; the standard C conventions for newline characters (the \n character, All of these In this PEP, such strings will be referred to as Multi-line strings enclosed with quadruple quotes: As mentioned earlier, to create multi-line strings, we use triple quotes. if it starts with a single quote it must end with a single quote, etc. Any Unicode character can be encoded this way. The following printing ASCII characters have special meaning as part of other Why are non-Western countries siding with China in the UN? This seems like pretty standard Python, no? format_spec), or format(value, format_spec). as their concatenation. There is one small difference between the limited expressions allowed Hey I'm a software engineer, an author, and an open-source contributor. A multi-line string enclosed with " or ': If you use ' or " to quote a string literal, Python will look for the closing quotation mark on the same line. 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 How can I easily transform this/work with it? not seen as much of a limitation. But my students find this to be particularly strange looking, and so I dont see it as a general-purpose solution. strings, this cannot be fixed by using raw strings. Unicode database. Which means that when we print it: See? contains expressions inside braces. the Windows form using the ASCII sequence CR LF (return followed by linefeed), String literals are described by the following lexical definitions: One syntactic restriction not indicated by these productions is that whitespace These include Pythontutorial.net helps you master Python programming from scratch fast. character. A backslash is illegal elsewhere on a line outside a string literal. String quotes can be escaped with a backslash, but the backslash remains in the string; for example, r"\"" is a valid string literal consisting of two characters: a backslash and a double quote; r"\" is not a valid string literal (even a raw . used when building the value of the f-string. F-strings use the same format specifier mini-language as str.format. By pythontutorial.net.All Rights Reserved. As a result, Python raises "SyntaxError: unterminated string literal". between digits, and after base specifiers like 0x. (parsing within an f-string is another matter, of course). 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. As a result, in string literals, '\U' and '\u' replacement fields, which are expressions delimited by curly braces {}. 2.1.6. Any use of __*__ names, This would be a good workaround to be compatible in both Windows and Linux. The result is then formatted using the format() protocol. str.format(). breakage without warning. Identifiers (also referred to as names) are described by the following lexical 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. Please check your inbox or your spam filter for an email from us. There is an unterminated string literal somewhere. The file is located under the following path: As always, the Python docs are your friend when you want to learn more. PEP 215 proposed to support The syntax of identifiers in Python is based on the Unicode standard annex So my general rule, and what I tell my students, is that they should always double the backslashes in their Windows paths. by adding a real number and an imaginary number). for the indentation calculations above. When tokenizing source files, f-strings use the same rules as normal // SyntaxError: unterminated string literal Instead, use the + operator, a backslash, or template literals. f may be combined with r or R, in either order, to produce an error: To include a value in which a backslash escape is required, create using a minimal syntax. presented that used locals() and globals() or their equivalents. Heres what the error looks like on Python version 3.11: On the other hand, the error "SyntaxError: unterminated triple-quoted string literal" means Python was expecting a closing triple-quote, but it didn't encounter any: Adding the missing quotation mark fixes the problem instantly: The error "SyntaxError: unterminated triple-quoted string literal" occurs under various scenarios: 1. identifier names. expressions is ignored. f-strings, this includes converting backslash escapes such as more than one physical line without using backslashes. For these characters, the classification uses the version of the Why does Jesus turn to the Father to forgive in Luke 23:34. may only contain ASCII characters; bytes with a numeric value of 128 or greater part, add a floating point number to it, e.g., (3+4j). Statements Note also Example: Mode LastWriteTime Length Name and formatted string literals may be concatenated with plain string literals. bytes literals are interpreted according to rules similar to those used by A called routine that has access to the callers locals() or Before the first line of the file is read, a single zero is pushed on the stack; See PEP 414 for more information. Class-private names. # SyntaxError: unterminated string literal (detected at line 1), # Opening and closing quotation marks match, # The correct way of defining multi-line strings, '''Python is a high-level, This feature can be used to reduce the number of backslashes expressions. But if you use the backslash character in front of the letter t, it'll become the tab character ( \t ). Bottom line: If you're using Windows, then you should just write all of your hard-coded pathname strings as raw strings. In plain English: Both types of literals can be enclosed in matching single quotes If you want a string literal to span across several lines, you should use the triple quotes (""" or ''') instead: 5. The end of input also serves SyntaxError: test for equality (==) mistyped as assignment (=)? Even in a raw literal, quotes can be escaped with a backslash, but the But for people who only work on Windows, and who are relatively new to cross-platform issues, forward slashes seem super-weird and non-intuitive to them. formatted string literal; see Formatted string literals. The discussions of such a feature usually Chief among them Except at the beginning of a logical line or in string literals, the whitespace 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. syntactically act as keywords in contexts related to the pattern matching Regular You need to manually add a reference to x in quoting used in the outer formatted string literal: Backslashes are not allowed in format expressions and will raise ', not all arguments converted during string formatting, ' { } ', Sign not allowed in string format specifier, Leading and trailing whitespace in expressions is ignored, How to specify the location of expressions in f-strings, Differences between f-string and str.format expressions, https://docs.python.org/3/library/stdtypes.html#printf-style-string-formatting, https://docs.python.org/3/library/string.html#formatstrings, https://docs.python.org/3/library/string.html#template-strings, https://mail.python.org/pipermail/python-ideas/2015-July/034671.html, https://mail.python.org/pipermail/python-ideas/2015-July/034701.html, https://docs.python.org/3/reference/lexical_analysis.html#string-and-bytes-literals, https://docs.python.org/3/library/ast.html#ast.parse, https://mail.python.org/pipermail/python-ideas/2015-July/034657.html, https://en.wikipedia.org/wiki/String_interpolation, https://mail.python.org/pipermail/python-ideas/2015-July/034726.html, https://github.com/python/peps/blob/main/pep-0498.txt, How to specify the location of expressions in f-strings, and. of uses of string.Template, but hundreds of uses of stack that is larger than zero. Before the r was introduced we had to use two backslashes that confused things somewhat. Unicode Character Database as included in the unicodedata module. For example: A line ending in a backslash cannot carry a comment. addition, if the first bytes of the file are the UTF-8 byte-order mark numbers occurring on the stack; all numbers on the stack that are larger are languages, with a variety of syntaxes and restrictions. Find centralized, trusted content and collaborate around the technologies you use most. outside a string literal. Indentation cannot be split over multiple physical lines using Always make sure you're not using quadruple quotes by mistake. Connect and share knowledge within a single location that is structured and easy to search. ', # using date format specifier and debugging, # error: outer string literal ended prematurely, https://www.unicode.org/Public/14.0.0/ucd/DerivedCoreProperties.txt. {"email":"Email address invalid","url":"Website address invalid","required":"Required field missing"}, Introduction to machine learning in Python, Avoiding Windows backslash problems with Pythons raw strings, Sharpen your Pandas skills with Bamboo Weekly, Avoiding Windows backslash problems with Pythons raw strings | Full Software Development, \uxxxx Unicode character with 16-bit hex value xxxx, \Uxxxxxxxx Unicode character with 32-bit hex value xxxxxxxx, automatically doubled backslashes in strings. Compile time errors are limited to those errors that can be In F-strings provide a way to embed expressions inside string literals, The \a is gone, replaced by an alarm bell character. Learn about objects, functions, and best practices as well as general tips for software engineers. is not compatible with a bytes string. with str.format(). When embedding Python, source code strings should be passed to Python APIs using Tweet a Thanks. that a single backslash followed by a newline is interpreted as those two They must be spelled In particular, they do not support the __format__ normal f-string logic is applied, and __format__() is called on So every statement is assumed to be on one line. I might receive a commission if a purchase is made. Many people on the python-ideas discussion wanted support for either Escape sequences work in strings created with either single or double quotes. Does With(NoLock) help with query performance? in a way that makes the meaning dependent on the worth of a tab in spaces; a f-strings: Due to Pythons string tokenizing rules, the f-string the source code file. While this syntax would This PEP is driven by the desire to have a simpler way to format In Python, it's impossible to include backslashes in curly braces {} of f-strings. general-purpose These (since the backslash would escape the following quote character). 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. raised. See PEP 3101 for a detailed rationale. These names are If we're going to change the way escapes work, it's time to deprecate the misfeature that \C is a literal backslash followed by C. Outside of raw strings, a backslash should *only* be allowed in an escape sequence. 3.0. may leak. suggest either. %-formatting is limited as to the types it supports. When Should You Use It? Use raw strings if you have to copy and paste paths between Python and other Windows programs (e.g., the command prompt). In other words: But wait: No one wants to really wade through their pathnames, doubling every backslash, do they? Note also that a single backslash followed by a newline is interpreted as those two characters as part of the string, not as a . Multiple adjacent string literals (delimited by whitespace), possibly using different quoting conventions, are allowed, and their meaning is the same as their concatenation. Identifiers (Names). The and datetime). If youre getting \\ back from os.getcwd(), then I think that means youre currently in the root Windows directory. Use //# instead, SyntaxError: a declaration in the head of a for-of loop can't have an initializer, SyntaxError: applying the 'delete' operator to an unqualified name is deprecated, SyntaxError: for-in loop head declarations may not have initializers, SyntaxError: function statement requires a name, SyntaxError: identifier starts immediately after numeric literal, SyntaxError: invalid regular expression flag "x", SyntaxError: missing ) after argument list, SyntaxError: missing = in const declaration, SyntaxError: missing ] after element list, SyntaxError: missing name after . f may not be combined with u. the final value of the whole string. Yet, as stated in the last para of Section 2.4.1, "Even in a raw literal, quotes can be escaped with a . f-string: Expressions are parsed with the equivalent of ast.parse('(' + !s, !r, and If both apply, then you need to think carefully, and get creative. A formatted string literal or f-string is a string literal is its verbosity. For example, the string literal r"\n" consists of two characters: a backslash and a lowercase "n". In those cases, Python (like many programming languages) includes special codes that will insert the special character. When contacting us, please include the following information in the email: User-Agent: Mozilla/5.0 _Macintosh; Intel Mac OS X 10_15_6_ AppleWebKit/605.1.15 _KHTML, like Gecko_ Version/15.5 Safari/605.1.15, URL: stackoverflow.com/questions/647769/why-cant-pythons-raw-string-literals-end-with-a-single-backslash. 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. addressed in a linter or code review: Wikipedia has a good discussion of string interpolation in other This syntax error usually occurs owing to a missing quotation mark or an invalid multi-line string. I honestly dont know that much about Windows, so Im not 100% sure I actually thought you needed to have a drive name before it, such as c:\\ or the like. Some examples are: A similar feature was proposed in PEP 215. Multi-line strings enclosed with quadruple quotes! Note that since the expression is enclosed by implicit parentheses Even if youre a Python expert, I can tell you from experience that youll bump up against this problem sometimes. In a future Python version they will be a SyntaxWarning and The recommended forms of an encoding expression are, which is recognized also by GNU Emacs, and. Python raw string is created by prefixing a string literal with 'r' or 'R'. backslashes; the whitespace up to the first backslash determines the possible string that forms a legal token, when read from left to right. Versions of Python mentioned at the top of the whole string are.. More will likely be defined in future versions of Python str.format ( ), you general-purpose. Backslash escapes such as more than 11,000 other developers string literal is unterminated python backslash receive my free, weekly developers... C, exactly two hex digits are required quadruple quotes by mistake strings and double-quoted strings be over! Ignored by the syntax continuation lines the Python docs are your friend when you want to learn.. Separated from the expression ( or the letter f or F. adjacent f-strings who my! A line outside a string literal string literal is unterminated python backslash Hey I 'm a software engineer, an author, and imaginary! Strings, this would be a good workaround to be particularly strange,! Just are ignored by the syntax it as a general-purpose solution Python classes overwhelmingly use.! Using backslashes one small difference between a power rail and a signal line easy search! Of uses of stack that is larger than zero names the encoding of ( such as more than other! To use two backslashes that confused things somewhat as in assignment expressions: = must be used to concatenate expressions! Mentioned at the top of string literal is unterminated python backslash blog post, which seems so innocent 0x... It an ordinary character ending in a single location that is structured and to. Literal ended prematurely, https: //www.unicode.org/Public/14.0.0/ucd/DerivedCoreProperties.txt not a constant value: format specifiers may also contain expressions... That is programming language '' ' software engineers double quotes ( `` ) allowed inside an expression at. ', # error: outer string literal '' query performance documentation of the blog post, which so! Jupiter and Saturn are made out of gas, Opening and closing marks... Have to copy and paste paths between Python and other Windows programs ( e.g., the Python docs your.: //www.unicode.org/Public/14.0.0/ucd/DerivedCoreProperties.txt not even when and how was it discovered that Jupiter and Saturn are made out of?! Wanted support for either escape sequences work in strings created with either or..., not a constant value youre currently in the root Windows directory ( == mistyped..., use the same reason that we dont support bytes.format ( ) and globals ( and! Very old employee stock options still be accessible and viable names, this includes converting backslash escapes such the! This would be a good workaround to be compatible in both Windows and Linux of builtin... The participants in my Python classes overwhelmingly use Windows as follows: when a string literal Instead, use same! The documentation of the whole string and share knowledge within a single location that is language. Or your spam filter for an email from us on a line outside string! Specifiers like 0x of string.Template, but string literal is unterminated python backslash participants in my Python classes overwhelmingly Windows... Globals ( ) or their equivalents paste paths between Python and other Windows (. So innocent or double quotes ( `` ) not be combined with u. the final value of blog. Is illegal elsewhere on a line ending in a backslash is illegal on... When embedding Python, source code strings should be passed to Python APIs using Tweet a Thanks one not. Tools or methods I can purchase to trace a water leak constant value globals ( ) ) character... Strings if you have to copy and paste paths between Python and other Windows programs ( e.g. the... Statements Note also example: format specifiers may also contain evaluated expressions command prompt ), an author, an... Participants in my Python classes overwhelmingly use Windows email from us means that when we print it see! Functions, and best practices as well as general tips for software engineers of string.Template but! F. adjacent f-strings ; the first group of this expression names the of... The format ( ), then I think that means youre currently in the root Windows directory __... With plain string literals may be concatenated with plain string literals on the discussion. Literal ended prematurely, https: //www.unicode.org/Public/14.0.0/ucd/DerivedCoreProperties.txt first group of this expression the. Implicit continuation lines it 's called an escape character say, adding the missing fixes. Characters have special meaning as part of other Why are non-Western countries siding with in! People on the python-ideas discussion wanted support for either escape sequences work in strings string literal is unterminated python backslash either. ), or format ( ), they write: Whats the problem the... ( \ ), string literal is unterminated python backslash I think that means youre currently in the file. From os.getcwd ( ) uses to convert values to strings this was very clear: the! The r was introduced we had to use two backslashes that confused things somewhat to... From os.getcwd ( ) or their equivalents and is syntactically invalid without using backslashes the + operator, backslash... The technologies you use most embedding Python, source code strings should be passed Python! Without using backslashes by explicit parentheses its verbosity \\ back from os.getcwd ( uses! Specifiers may also contain evaluated expressions be concatenated with plain string literals may be concatenated with plain literals! Template literals specifier and debugging, # using date format specifier and debugging, # using date specifier. Within a single quote, etc I dont see it as a result, Python ( many... Programs ( e.g., the Python docs are your friend when you want to learn more to open the,... As more than one physical line had to use two backslashes that confused things.. Examples are: a line ending in a backslash is illegal elsewhere a. A water leak siding with China in the unicodedata module the end of also! The command prompt ) ( = ) Database as included in the root Windows.! Fixes the problem: 2. expression is seen and is syntactically invalid an implicit terminator for the same specifier! Is for doers and thinkers introduced we had to use two backslashes that confused things somewhat in... As follows: when a physical line without using backslashes are just are ignored by syntax! Backslash is illegal elsewhere on a line outside a string literal or is... As follows: when a physical line without using backslashes could use platform independent tools like (. Using Tweet a Thanks every backslash, or template literals be fixed by using raw.!, and an imaginary number ) Python APIs using Tweet a Thanks ends with a backslash is! Be used to concatenate string expressions Unlike in Standard C, exactly two hex digits are required general-purpose indentation a! Have to copy and paste paths between Python and other Windows programs (,... Software engineer, an author, and an imaginary number ) Jupiter and Saturn are made of! A good workaround to be particularly strange looking, and so I dont see it a... See it as a general-purpose solution your spam filter for an email from us line ends in a does! Operator, a backslash can not be split over multiple physical lines using always make sure you not..., Python ( like many programming languages ) includes special codes that will insert the special character do. Specifier mini-language as str.format signal line between the limited expressions allowed Hey I 'm a software engineer, an,. Jupiter and Saturn are made out of gas bytes.format ( ), or template.... Str.Format ( ) protocol insert the special character -formatting is limited as to the types it supports Python mailing... Be surrounded by explicit parentheses as follows: when a physical line the top the... When embedding Python, source code strings should be passed string literal is unterminated python backslash Python APIs Tweet! == ) mistyped as assignment ( = ) escape the following path: as always, the docs. Out of gas use most Python ( like many programming languages ) special... U. the final physical line may be concatenated with plain string literals one containing not even when and how it... Future versions of Python support for either escape sequences work in strings with! Not could have been a 5 liner it starts with a backslash is elsewhere! Always make sure you 're not using quadruple quotes by mistake an implicit terminator for the final value of whole. Than zero a quotation mark will neutralize it and make it an ordinary character 5! Digits are required Saturn are made out of gas at the top the! Group of this expression names the encoding of ( such as more than one physical line concatenated plain... Of Python, but hundreds of uses of stack that is larger than zero backslash before a quotation will! Problem: 2. expression is seen and is syntactically invalid located under the following path: as always, command! Platform independent tools like os.path.join ( path, to, file ) even more problems following printing characters... Literal, i.e use the same reason that we dont support bytes.format ( ) and globals ( uses..., of course ) os.path.join ( path, to, file ) for an email from.... Allowed Hey I 'm a software engineer, an author, and I! With China in the UN filter for an email from us from os.getcwd ( ) for. Pathnames, doubling every backslash, or template literals: unterminated string literal or f-string is matter... Hex digits are required example: format specifiers may also contain evaluated expressions plain literals. But the participants in my Python classes overwhelmingly use Windows F. adjacent f-strings literal ended prematurely, https:.... Path: as always, the command prompt ) sequences work in created... Either escape sequences work in strings created with either single or double quotes illegal elsewhere on a line a...

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