
python - What exactly do "u" and "r" string prefixes do, and what …
This question is similar to: What's the difference between r'string' and normal 'string' in Python? and What's the u prefix in a Python string? Close voters, please vote to close as a duplicate of the second one, since I already voted to close as a duplicate of the first one.
What does an 'r' represent before a string in python?
Nov 16, 2015 · See the official Python 2 Reference about "String literals": When an 'r' or 'R' prefix is present, a character following a backslash is included in the string without change, and all backslashes are left in the string. For example, the string literal r"\n" consists of two characters: a backslash and a lowercase 'n'.
What is the difference between !r and %r in Python?
Oct 13, 2015 · %r is not a valid placeholder in the str.format() formatting operations; it only works in old-style % string formatting. It indeed converts the object to a representation through the repr() function. In str.format(), !r is the equivalent, but this also means that you can now use all the format codes for a string.
Using `r` with String Literals in Python - Stack Overflow
Oct 2, 2014 · Basically, with r in front of a string literal, what you see is what you get 1. Without r in front, python will translate various escape codes (\t, \n, \\, etc) into different characters (tab, newline, \, etc.)
python - What does !r do in str () and repr ()? - Stack Overflow
Feb 7, 2012 · In python, there are two fairly natural choices to get a string representation of something ... str and repr. str is generally a little more human friendly, repr is generally more precise.
python - What does preceding a string literal with "r" mean?
When an 'r' or 'R' prefix is present, a character following a backslash is included in the string without change, and all backslashes are left in the string. For example, the string literal r"\n" consists of two characters: a backslash and a lowercase 'n'.
python - I know of f-strings, but what are r-strings? Are there …
Sep 17, 2018 · My questions are the following: What precisely is an r-string and how does it compare to an f-string? Are r-strings specifically used for matplotlib's mathtext and usetex? Apart from f-strings and r-strings, are there any other notable similar string variants or alternates that I should familiarize myself with or be made aware of?
how does \r (carriage return) work in Python - Stack Overflow
The carriage return or \r works differently in different IDEs. Colab will give you the output 'return' that you were expecting while spyder will give you the output 'return use a carriage' (that's is expected from \r) Usually, ` \r` works as if we have shifted your cursor to …
f string - What does !r mean in Python? - Stack Overflow
Dec 8, 2019 · By default an f-string displays the result of calling str on the values inside the curly braces. Specifying !r displays the result of calling repr instead. From the docs The conversion field causes a type coercion before formatting. Normally, the job of formatting a value is done by the format () method of the value itself. However, in some cases it is …
string - When to use %r instead of %s in Python? - Stack Overflow
The %s specifier converts the object using str(), and %r converts it using repr(). For some objects such as integers, they yield the same result, but repr() is special in that (for types where this is possible) it conventionally returns a result that is valid Python syntax, which could be used to unambiguously recreate the object it represents.