python backslash

[Go] forward slash, backslash, and python slash in python Address: http://www.cnblogs.com/followyourheart1990/p/4270566.html First, "/" is a forward slash and "\" is a backslash. It can be recorded as a forward slash. In general, a forward slash/is used for directory separators, and Unix and Web /, windows uses a

here is a little bit of experience:For the following two reasons, using backslashes in regular expressions creates a double-conversion problem.(1), when Python handles the string itself, the backslash is used to escape the character(2), regular expressions also use backslashes to escape charactersHow should the regular expression be written to match 1 backslashes in a string? "\ \" Is this OK? Try to know,

characters) how to write this string? Copy Code code as follows: Import re Re_str_patt = "\\\\d\\+" Print Re_str_patt Reobj = Re.compile (Re_str_patt) Print Reobj.findall ("\\d+") Written Re_str_patt = "\\\\d\+" is also OK, because \+ for strings, there is no escape meaning, so it is a backslash. The most common way to write regular expressions in Python is raw strings, nativ

This article mainly introduces the information about the left and right slashes (forward and backward slashes) in Python, which is very good and has reference value, for more information about the left and right slashes (forward and backward slashes) in Python, see this article, for more information, see "> First, "/" is a forward slash and "\" is a backslash. i

The problem of backslashes in regular expressions is not always understood before. It was finally clear today that the data had been consulted.One of the most important is that the backslash defined in Python's own string is also an escape character, and the backslash in the regular expression is also an escape character, so a backslash in a regular expression in

, which is that it can't end with a backslash, which makes a person very silent. Today, I suddenly found out that the general Python FAQ has instructions and solutions.The first thing to clarify is not to end with a backslash, but not to end with an odd number of backslashes.Second, the reason for this bug is that some processors, such as the primary regular expr

Python also eliminates the anti-slash \ Escape annoyance(ii) the slashes in regular expressionsThe regular expression matches the backslash "\", Why is "\\\\" or r "\ \"?Because in the regular expression \ is a special symbol, in order to cancel its special meaning in the regular expression needs to add a \ to become the \ \, but the problem comes again, \ is a special character in the string, so we have t

First, the "/" left tilt is a forward slash, "\" Right tilt is a backslash, can be remembered as: Division sign is a forward slash generally for directory separators, UNIX and the web with a forward slash/,windows with backslashes, but now windows(i) the slashes in the cataloguePython reads the directory parameters that the file needs to enter, listing the following examples:Path = r "C:\Windows\temp\readme.txt"path1 = r "C:\windows\temp\readme.txt"pa

First, the "/" left tilt is a forward slash, "\" Right tilt is a backslash, can be written as follows: Division is a forward slash in general for directory separators, UNIX and web with forward slash/,windows with backslashes, but now windows (i) the slashes in the catalogue The directory parameters to be entered in the Python read file are listed in the following example: Path = r "C:\Windows\temp\readm

First, the "/" left tilt is a forward slash, "\" Right tilt is a backslash, can be remembered as: Division sign is a forward slash generally for directory separators, UNIX and the web with a forward slash/,windows with backslashes, but now windows(i) the slashes in the cataloguePython reads the directory parameters that the file needs to enter, listing the following examples:Path = r "C:\Windows\temp\readme.txt"path1 = r "C:\windows\temp\readme.txt"pa

This article mainly introduces the left slash in Python, right slash (forward slash and backslash) related data, very good, with reference value, the need for friends can refer to the next "> First, the "/" left tilt is a forward slash, "\" Right tilt is a backslash, can be remembered as: Division sign is a forward slash generally for directory separators, UNI

Python Regular expression matches backslash "\"eg>>>a= ' w\w\w '' w\\w\\w ' # printed "\ \" is escaped to a backslash "\"If you need to match string A, you need to match a backslash "\">>>re.split (r ' \ \ \ ', a)[' W ', ' W ', ' W ',]Escaping the string first and then escaping the regular expressionBecause all the cha

Online collection of 2 ways: A: Similar to: \u3232\u6674 String, converted to the corresponding Unicode character. "Resolution Process" The corresponding, can be decoded through the Python decode function, where the original string bit unicode-escape, it can be. The complete Python code demo is: Slashustr = \\u7f8e\\u56fd Decodedunichars = Slashustr.decode ("Unicode-escape") print "decodedunichars

How to insert a backslash in MySQL, a backslash is eaten, and a backslash is escapedProblem Description:After the contents of the backslash in MySQL are put into storage, the backslash is found to be missing for no reason (as the old saying is eaten)Example: inserting INSERT

Reasons for automatically adding a backslash before a PHP form submission quotation mark and three methods to disable the php magic quotation mark. Reasons why PHP forms are automatically added with backslashes before quotation marks and three ways to disable php magic quotes, the submitted slash recently finds out the reason why php forms are automatically added with the backslash before the quotation mark

PHP removes the backslash in the json string and the backslash before the double quotation marks. json double quotation marks. PHP removes the backslash in the json string and the backslash before the double quotation marks. json double quotation marks are sometimes escaped by adding a

The server space provided by the general space provider default PHP instruction MAGIC_QUOTES_GPC is on, which is open. You can then use the stripslashes () function to remove the automatically added backslash. Usage is: For example, the variable containing the string is $STR, then use the stripslashes () function to handle this string: Stripslashes ($STR), the output is the result of removing the backslash.

This article describes how to remove backslashes from json strings in PHP and the backslashes before double quotation marks in PHP. For more information, see This article describes how to remove the backslash \ from the json string in PHP and the backslash before double quotation marks in PHP. For more information, see The json string uploaded to PHP through AJAX is sometimes escaped by adding a

Yesterday with PHP made a read and write HTML document applet, local testing is normal but to the site found that when the submission is saved automatically in double quotation marks in front of a backslash "\", and every time you save a backslash, it is depressed.Of course, do this just to participate in the electronic shopping district website to update, because too lazy to install CMS and blog program, d

Add a backslash before the character, including single quotation marks, double quotation marks, and backslash php code. Add a backslash before the character, including single quotation marks, double quotation marks, and backslash. php Tutorial code functiond_addslashes ($ string, $ force0) {if (! $ Globals [magic_quote