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What do single quotation marks mean in Python?
Generally, double quotes are used for string representation and single quotes are used for regular expressions, dict keys or SQL. Hence both single quote and double quotes depict string in python but it’s sometimes our need to use one type over the other.
How do you do a backslash in double quotes?
Within double quotes, backslashes that are followed by one of these characters are removed. Backslashes preceding characters without a special meaning are left unmodified. A double quote may be quoted within double quotes by preceding it with a backslash. If enabled, history expansion will be performed unless an ‘ !
What is difference between single and double quotes in Python?
Key Differences Between Single and Double Quotes in Python
| Single Quotation Mark | Double Quotation Mark |
|---|---|
| Single quotes for anything that behaves like an Identifier. | Double quotes generally we used for text. |
| Single quotes are used for regular expressions, dict keys or SQL. | Double quotes are used for string representation. |
How do I escape backslash and single quote or double quote?
You have to keep Python from thinking it has special meaning. You do that by escaping it – with a backslash. One way to do this is to use backslashes, but often the easier and less confusing way is to use raw strings:
When does a backslash retain its special meaning?
The backslash retains its special meaning only when followed by one of the following characters: $, `, “, \\, or . A non-quoted backslash (\\) is the escape character. It preserves the literal value of the next character that follows, with the exception of .
What does a non quoted backslash do in Excel?
A non-quoted backslash (\\) is the escape character. It preserves the literal value of the next character that follows, with the exception of . If a \\ pair appears, and the backslash is not itself quoted, the \\ is treated as a line continuation (that is, it is removed from the input stream and effectively ignored).
Can a regex match a backslash and a quote?
There is no backslash character in any of them. So the regex you’re looking for doesn’t need to match a backslash and a quote, just a quote: BTW: You also don’t have to compile the regex before you use it, re.sub will accept a string regex as well as a compiled one.