Regex Only Letters And Numbers

Regular Expressions or Regex is an API for defining String patterns that can be used for searching, manipulating and editing a text. — A Live Regular Expression Tester for PHP (letter, number, underscore) string s dot matches newline x ignore whitespace in regex A matches only at the. Home » Php » PHP – regex to allow letters and numbers only. It also encodes the manufacturer and attributes of the vehicle. Regular expressions allow users to create complicated queries. The sequence of the characters is not important. It belongs to the owner of this website and I am not affliated or related to them: USA passport, Un. Thus websites can be redirected and labeled as canonical through certain patterns that are described by regex. It will also prohibit user to enter space at the begining and at the end of a sentence. A regular expression (or RE) specifies a set of strings that matches it; the functions in this module let you check if a particular string matches a given regular expression (or if a given regular expression matches a particular string, which comes down to the same thing). match(r"[a-zA-z]+", text). What is a Regular Expression? This is a method in code or script to describe the format or pattern of a string. So what will we do for this? First of all we have to identify the pattern, and with the help of regular expression convert it into a dictionary and that dictionary will contain only fruit's name and its quantity. I need to remove everything except numbers, letters and spaces from a php string. Useful one liners and sed notes. For a tutorial about Regular Expressions, read our JavaScript RegExp Tutorial. regular expression for letters, numbers and - _ form domain validation. However, if a string contains two numbers, this regular expression matches the last four digits of the second. letters A–Z, a–z, and digits 0–9. Describes InterSystems ObjectScript support for many types of regular expressions syntax used for string pattern matching. A common requirement is extracting a number from a string. This is between two and four characters. I happen to have learned regular expression in my dealing with FreeBSD, shell scripting, php, and other open source work. On this website, regular expressions are highlighted in red as regex. Split method. To get a string contains only numbers (0-9) we use a regular expression (/^[0-9]+$/) which allows only numbers. Thanks in Advance. One and only one of these characters must exist in the string for pattern matching to succeed. First, a User Full Name field that will allow entering only alphabets and a space character. Only letters and numbers - Regex Tester/Debugger. Regular expression patterns are arbitrary (i. Re: complicated string - need to remove letters only and keep number formatting thanks. Yours, Bu. Let’s take a look at positional elements. Regular expressions (regex) match and parse text. So, the regex would trigger on any of these: rocket RoCKEt hi Rocket This is a rocket. You write down some helpful quantifiers to help you: * zero or more times, + once or more, ? zero or once. They are an important tool in a wide variety of computing applications, from programming languages like Java and Perl, to text processing tools like grep, sed, and the text editor vim. I usually drop a regex tool onto the canvas and it has a wealth of info: That's where I got the pattern of [[:alpha:]]. To guard against accidentally entering an incorrect VIN number, the VIN number incorporates a check digit (the 9th character). I need a way to check if it contains anything other than numbers. Regular Expression Syntax¶. , ! ? So basically anything in a typica. What is a Regular Expression? This is a method in code or script to describe the format or pattern of a string. Split method. Code numbers 0D (00H) to 31D (1FH), and 127D (7FH) are special control characters, which are non-printable (non-displayable), as tabulated below. regex no spaces and letters only I have a text field where I need the validation to make it to where a user cannot enter spaces or numbers. There is also fixed = TRUE which can be considered to use a literal regular expression. With the recent introduction of REGULAR EXPRESSION in Teradata, many complex tasks have now become a one-line code. NET, Java, Perl, Python 3 and Ruby, it matches a position where only one side is a Unicode letter, digit or underscore. Tiger123 tiGer786 9TiGer11 Hope you got the idea!!!!. Please guide me how i apply expression to accept characters and space. Here is the complete web document. here is one I know works to be sure there are only numbers in the string, but i can not for the life of me figure out the right syntax for quotes. Using RegEx should be possible but I cannot figure out how the syntax should go. @johnsmith3. They are an important tool in a wide variety of computing applications, from programming languages like Java and Perl, to text processing tools like grep, sed, and the text editor vim. This expression follows the above 4 norms specified by microsoft for a strong password. Sometimes situations arise ( suppose a user id, password or a code) when the user should fill a single or more than one field with alphabet characters (A-Z or a-z) and numbers (0-9) in an HTML form. To get a string contains only letters (both uppercase or lowercase) we use a regular expression (/^[A-Za-z]+$/) which allows only letters. sed is a stream editor. Regular Expressions (Search for patterns of text) FINDSTR with the /R option can use the following metacharacters which have special meaning either as an operator or delimiter. regex pattern : allow number,string, hypen, slash only. There is also fixed = TRUE which can be considered to use a literal regular expression. i want to limit the ability to only accept particular charteres as i use - and. 6 was trying something like "-regex '\. Is there a way via text to columns to separate letters from numbers into 2 columns? For example, if I have HT13041 is there a way for me to separate the HT and the 13041 into two different columns?. Write in the comments any…. It will also prohibit user to enter space at the begining and at the end of a sentence. com with regex. The prefix was a name, and the first two or three letters, usually shown in capital letters, were dialed. Home » Php » PHP – regex to allow letters and numbers only. Sometimes situations arise ( suppose a user id, password or a code) when the user should fill a single or more than one field with alphabet characters (A-Z or a-z) and numbers (0-9) in an HTML form. So punctuation would not have been in the. For UNIX-based operating system, if you pass a value that is not a string (or an overloaded object), independently of the value, it will always result in false. Windows PowerShell Regex - Regular Expressions. Asp C# Regex for alphabet characters only. Note that this regular expression only checks for groups of 1-3 digits separated by periods. In the example shown, the data validation applied to C5:C9 is: = ISTEXT ( C5 ) How this formula works Data validation rules are triggered. Those of us that work with Linux also use Regular Expression, often without knowing it. subto replace all vowels with a lowercase letter “o”. So word1_word2&word3 is the same as "word1 word2 word 3". That is the default. [Answered] RSS. Digits: We extract a group of digit characters and access the Value string representation of that number. [READ ONLY] Quiting and all various letters and numbers inside brackets and replace I'll give you the two possible syntaxes of the search regular expression. I've created a separate ticket on your behalf (T749042: ASPxTextBox - How to allow to enter only certain symbols). Splitting string containing letters and numbers not separated by any particular delimiter in PHP. I need to get the regex-pattern for the following sequence of numbers: X. a + to the end of your regex pattern, like this: the end of the pattern to ensure that the whole string contains only numbers and letters. The problem is: regular expressions can be hard and that will only grow as more complex regular expressions are needed for various things that you need to accomplish. I've spent most of today. i is a modifier (modifies the search to be case-insensitive). A basic indexed search searches only article space. To get a string contains only numbers (0-9) we use a regular expression (/^[0-9]+$/) which allows only numbers. Trying to write -regex for a find statement that shows only directories with dots and numbers, for example 1. Only users with topic management privileges can see it. We could enter every single special character, or we could just as easily write our query to exclude all the alphabetic and numerical character, such as the below example using the alphareg table. For UNIX-based operating system, if you pass a value that is not a string (or an overloaded object), independently of the value, it will always result in false. If you are new to regular expressions this can be very overwhelming – but fear not, you don’t need know everything about regexes before you can be productive with them. If I asked you to write a RegEx that matches all the letters and numbers and ignore their cases you probably would have written something like /[a-z0-9]/gi and that’s exactly right. Mask Type: Extended Regular Expressions Extended regular expressions allow you to specify a pattern that the entered text should match. Characters include normal letters, but digits as well. For SIMILAR TO, regular expression syntax is consistent with the ANSI/ISO SQL standard. Notice that the bottom of that list has a link to complete syntax which is very helpful for Regex. A regular expression specifies a pattern that aims to match the input string. 5" How to use Regular Expressions (Regex) in Microsoft Excel both in-cell and loops. Your regex matches only one letter but you say you want two letters. Add a reference to "Microsoft VBScript Regular Expressions 5. Regex : all greek letters with 5 unique letters (meaning that each letter only appears once) 12 Number of backslashes needed for escaping regex backslash on the command-line. When I run the application, it requires to enter Employee number, social, and name. Metacharacters. TryParse on the Value here. Powershell makes use of regular expressions in several ways. " Wondering how to use regular expressions for address validation? We get a lot of questions from programmers about parsing and validating addresses. We will show some examples of how to use regular expression to extract and/or replace a portion of a string variable using these three functions. > removing characters other than letters or to remove only those characters. only letters or numbers. Thanks for the quick response! Both options worked. This is between two and four characters. An expression is a string of characters. Regular Expressions or Regex is an API for defining String patterns that can be used for searching, manipulating and editing a text. Using RegEx should be possible but I cannot figure out how the syntax should go. Metacharacters. We only consider numbers like 1. The original question asked to only validates if the string contains both numbers and [letters] the simplest interpretation would be to always validate if the string contains both numbers and [letters]. But it is accepting numbers also can any one help me getting regular ex Regular expression for only alphabetics [Solved] (Java in General forum at Coderanch). 1 - I want it to accept only numbers, letters (uppercase and lowercase)? The slash needs to be escaped because it's also used as a regex delimiter. It is raised every time the user changes the text. and remove all files that contain any characters other than letters and numbers This topic has been deleted. Regular expressions consist of letters and numbers, in addition to characters with special meaning to grep. Write in the comments any…. The below subroutine will take a given column letter reference and convert it into its corresponding numerical value. (direct link). We could enter every single special character, or we could just as easily write our query to exclude all the alphabetic and numerical character, such as the below example using the alphareg table. We are adapting an Alpha revision scheme and ignoring the skipped letter preference; straigh A-Z, AA-ZZ. It is more like Google search expressions. Escaped characters: Most characters like abc123 can be used literally inside a regular expression. I'm currently using this regex ^[A-Z0-9 _]*$ to accept letters, numbers, spaces and underscores. Do not worry: we will keep the problem simpler than it is in its full generality. So what will we do for this? First of all we have to identify the pattern, and with the help of regular expression convert it into a dictionary and that dictionary will contain only fruit's name and its quantity. xx and so on. In Excel we often like to Count Things. Not to worry, though, you can simply create a new string with the changes. The most simple regular expression is made from the text you want to match. Two types of regular expressions are used in R, extended regular expressions (the default) and Perl-like regular expressions used by perl = TRUE. Here is the complete web document. And likewise, [^n-p] will only match any single character except for letters n to p. You can use the functions int and float to convert to integers or floating point numbers. In that case the regex should be: ^[A-Za-z]{2}$ Note the added {2} to specify the number of letters. Need to Know Regular Expressions - Pattern arguments in stringr are interpreted as regular expressions a!er any special characters have been parsed. Regular Expressions and C#,. For example [a-zA-Z0-9]+ is a pattern that matches against a string of any length, as long as the string contains only lowercase letters (a-z), uppercase letters (A-Z), or numerals (0-9). We are also including "0-9" so that numbers are also allowed. Vasya regex Website Image Match html tag email validation Match brackets Escape one or more asterisks (\*+) valid packaging slug Driss search params test number Match an MD5 hash Match string not containing string Checks wheter the given number starts with a given number Strip non-digits Validate an ip address Check if a string only contains. The set approaches are usually worst, beating regexes only for the empty string case. and upper-case letters and numbers; an AND statement in Regex In this case it will only match a. given a string, if i only wanted to get only letters and number (no symbols) Use a regular expression. A2A: Strings are immutable in Python, which means they cannot be changed. As they only want to allow letters '. Ruby regular expressions (ruby regex for short) help you find specific patterns inside strings, with the intent of extracting data for further processing. The example also shows how to remove all special characters from String in Java. It could range from 8 to 9 digits. Parse: To parse the number, use int. I need to modify it to require at least one number or letter somewhere in the string. Indexed search. Here Mudassar Ahmed Khan has explained with an example, how to allow only AlphaNumeric (Letters or Numbers), Underscore in Username and it must have length of 3 to 10 characters using JavaScript. Reply to Regex - Find in Files. To match a specific number of characters, put the number in a pair of curly braces. For UNIX-based operating system, if you pass a value that is not a string (or an overloaded object), independently of the value, it will always result in false. A regular expression is a pattern that is matched against a string from left to right. This way we can use many other characters instead of the slash. Example: Looking for Customer Account Numbers. A regular expression (or RE) specifies a set of strings that matches it; the functions in this module let you check if a particular string matches a given regular expression (or if a given regular expression matches a particular string, which comes down to the same thing). It is widely used to define constraint on strings such as password. As a trivial example, the pattern The quick brown fox matches a portion of a string that is identical to itself. By default, the regular expression engine caches the 15 most recently used static regular expressions. Restricting to alphanumeric and letter characters. Setting up a funnel in which a step should match mutiple pages instead of one. NET with C# as the code behind. If your string has to check both, check for letters and then check for numbers (or reverse order). It has been placed in our processing queue and will be answered shortly. Now to use Regex in asp. I need to remove everything except numbers, letters and spaces from a php string. In that case the regex should be: ^[A-Za-z]{2}$ Note the added {2} to specify the number of letters. Python regex to find sequences of one upper case letter followed by lower case letters Write a Python Program to find sequences of one upper case letter followed by lower case letters. putting regular expressions to use. Regex Tester isn't optimized for mobile devices yet. The following Oracle REGEXP_LIKE example would retrieve all of the names that contain the letter ‘z’. This is between two and four characters. Simple RegEx Tutorial. Your regex matches only one letter but you say you want two letters. Forté Agent newsreader has a regular expression scheme for describing junk filters. and upper-case letters and numbers; an AND statement in Regex In this case it will only match a. match(/^[0-9A-Za-z_\s\/]+$/);[/code] Also: If you just want to test the string and don't care about specific. To acquire the numbers, we use the format string @"\D+" in the Regex. i want to limit the ability to only accept particular charteres as i use - and. Two types of regular expressions are used in R, extended regular expressions (the default) and Perl-like regular expressions used by perl = TRUE. Find and replace items using regular expressions. Feel free to contribute!. Post Posting Guidelines Formatting - Now. preg_match() The preg. I am programming in ASP. I want to check too letters with accents, like á or ô. So this type of regex notation and engine is used if grep is involved without any options. Hi boys, I have a txt file with a lot of lines. Only letters and numbers - Regex Tester/Debugger. Code numbers 0D (00H) to 31D (1FH), and 127D (7FH) are special control characters, which are non-printable (non-displayable), as tabulated below. ```{r} # To create the regular expression, we need \\ dot <-" \\. Regular Expression Syntax¶. A regular expression is entered as part of a command, and it is a pattern made up of symbols, letters, and numbers that represent an input string. > removing characters other than letters or to remove only those characters. The match pattern is the main component of a regular expression, and is therefore rather complex. And I only want directories with numbers and dots. Regular expressions also have an exec (execute) method that will return null if no match was found and return an object with information about the match otherwise. Strings and Manipulations Also read about Regular Expressions and LIKE (VBA Operator) Number of CAPITAL letters in a cell or Range of cells (revisited). Flowchart: HTML Code. Regular expression tester. First, let's check some quick regex scripts to extract links, emails, and phone numbers, then learn how to use regex in popular text editing programs Sublime Text, Notepad++, and BBEdit: Regex Scripts to Extract Data. What Are Regular Expressions? Regular expressions can be described as a formula to find a text string and are used where an ordinary search will not do. Below follows a list of most commonly used regular expressions together with explanations and some potential uses. How to keep only numbers in String using regular expression?. i want to limit the ability to only accept particular charteres as i use - and. 'abc' - correct, contains letters from english alphabet. How to keep only numbers in String using regular expression?. The match function can be used to find any alphabet letters within a string. I find it really hard to write these expression, e. Putting a-z and 0-9 in the same grouping followed by [NC] matches any combination of letters and numbers. Regular Expression Tester with highlighting for Javascript and PCRE. Regular expressions consist of letters and numbers, in addition to characters with special meaning to grep. But this regex you can insert only positive number like 465468. You can find and replace strings of text, including characters, numbers, words, or patterns with regular expressions in Google Docs and Sheets. This type of regular expression introduced in AWK and SED and for which now there is a POSIX standard. Finding words with capital letters and numbers in them were defined as consisting only of Capital letters and Numbers. I'm now using the below code to turn filenames into. Please guide me how i apply expression to accept characters and space. Note: For many years now, UltraEdit and UEStudio have included full support for Perl-compatible regular expressions. As you can see, using this regex pattern, the String must be an alphanumeric string containing only letters and numbers, and must have a length of four characters. Mask Type: Extended Regular Expressions Extended regular expressions allow you to specify a pattern that the entered text should match. Disclaimer : I do not own this image. For example if we want to check if a string only contains 1, 2, 3 and 4, we can use: from sets import Set allowed_chars = Set('1234') validationString = '121' if Set. Regular Expressions and C#,. Words joined only by non-alphanumerics are treated like a phrase. Regular expression searching - SSN and EIN. [READ ONLY] Quiting and all various letters and numbers inside brackets and replace I'll give you the two possible syntaxes of the search regular expression. The word "Regular expression" is a mouthful, so you will usually find the term abbreviated as "regex" or "regexp". C# / C Sharp Forums on Bytes. You can remove number characters in strings using the C# language. Regular expressions are a concise and flexible tool for describing patterns in strings. The patterns used in RegExp can be very simple, or very complicated, depending on what you're trying to accomplish. position where one side only is an ASCII letter, digit or underscore An Arabic character that is not a letter or a number. To allow only text in a cell, you can use data validation with a custom formula based on the ISTEXT function. In previous articles I explained jQuery regular expression to validate url without http(s), regular expression to validate phone number in jquery, regular expression to replace all special characters with spaces in c#, regex email validation in c# and many articles relating to validation, JQuery. So this type of regex notation and engine is used if grep is involved without any options. Checking for numbers and letters. If you want to ensure that the digit groups are from 0-255, or that you have a valid IP address, you'll have to do additional (non regexp) work. The Basics. UPDATED 5/15/19! After some time I thought about publishing this article (see my previous tutorial) with the regex I used most in the projects on which I was involved. This will match if some char from z is an uppercase letters and some are symbols and some are digits. 0 and not 1. What is a Regular Expression? It's a string pattern written in a compact syntax, that allows us to quickly check whether a given string matches or contains a given pattern. The syntax is similar to the syntax defined in the POSIX ERE specification. As you can see, all the other characters have been stripped from the input string, leaving only letters in the resulting string. /^The/ matches "The. Below follows a list of most commonly used regular expressions together with explanations and some potential uses. Regular Expressions and C#,. If I wanted to just strip numbers or letters out of a string I'd just use the Data Cleansing tool and work from the results of that. How can I do that?. The domain name has a slightly less permissive character class with only letters, numbers, periods, and hyphens: [a-zA-Z0-9. Built with love by Steven Wade using VerbalExpressions. Only letters and numbers - Regex Tester/Debugger. Regular expressions allow us to do that by describing a set of characters. We have to explain to function grep() that we need only strings containing letter or digits. Quick-Start: Regex Cheat Sheet. How do I perform a match on a field ONLY on letters that are followed by numbers? 0. Regular expressions are supported with the SIMILAR TO, and REGEXP search conditions, and the REGEXP_SUBSTR function. For a tutorial about Regular Expressions, read our JavaScript RegExp Tutorial. Possible Matches:. Regular expressions are a concise and flexible tool for describing patterns in strings. In a text editor, you can do so by using its "Find Next" or "Search Forward" function. I have tried this: "\. Regular expressions. Regular Expressions. RegEx As Object split up letters and numbers in a string in a word document. Oracle: Separating Numbers and Letters. They are used to set criteria for strings of characters, e. And last will be the “dot-com” part (technically known as the top-level domain), which can really be dot-anything. If you wanted to eliminate "abc" from the output, you must expand the regular expression to match the rest of the line and explicitly exclude part of the expression using "(", ")" and "\1", which is the next topic. Hi All, I need to check only alphabets for that i used regular expression as. IP Numbers. Feel free to contribute!. Reply to Regex - Find in Files. \D is for all non-alphanumeric characters. 0 Description A consistent, simple and easy to use set of. single prop only Repeated Elements https and http w\w\out www AutoDeployApp parse SemVer regex Only letters and numbers Phone numbers Apellidos españoles phone number ASN input Acronym Simple If not regexp statement Copy of All Web Site Data Excluding Ericsson Internal Traffic Interi da 0 a 120 word tester. search (regex_str, string) ¶ Compile regex_str and search it in a string. I don't want to allow any special characters single or double quotes etc. For example, the pattern [abc] will only match a single a, b, or c letter and nothing else. [_4^a-zA-Z] Any single character which can be the underscore or the number 4 or the ^ symbol or any letter, lower or upper case?, +, * and the {} count parameters can be appended not only to a single character, but also to a group() or a range[]. How to keep only letters and numbers in String? You can match any character, which is not a letter or a number using the regular expression in Java. Most areas have improved over time, and the aspiration is a good one. VIN numbers. For example, the regular expression abc matches abc 123, 123 abc, and 123 abc xyz. If your regular expression is dynamic, it is better to use the regex constructor method. For example, for the employee number, I have to enter number only; for employee name, I have to enter letter only, Please give some idea. ]+'", but it also shows dirs with letters. Here Mudassar Ahmed Khan has explained with an example, how to check if String contains only Alphabets (Letters) and Numbers (Digits) using JavaScript. In order to verify that the string only contains letters, numbers, underscores and dashes, we can use the following regex: "^[A-Za-z0-9_-]*$". Regular expressions are strings of special characters that can be used to search and find character patterns. What have I tried?. Tags for Replacing only characters using Regex in C#. Regex for alpha numeric ,apostrophes and hyphens with certian conditions What about checking that it contains only valid if the OP is really new to regular. 'abc' - correct, contains letters from english alphabet. Minimum 8 Character Password with lowercase, uppercase letters and numbers ^[a-zA-Z0-9]{8,}$ 8 Character Password with lowercase, uppercase or special characters. Re: complicated string - need to remove letters only and keep number formatting thanks. Explanation: The change here is to the regular expression grouping. So word1_word2&word3 is the same as "word1 word2 word 3". 0x00DF (Latin small letter sharp s) 0x017F (Latin small letter long s) 0x212A (Kelvin sign) Can you just fall back on the Unicode categories? If we define "word characters" as Letters and Numbers, U+212A is {Lu} and thus a word character. Namespace Prefix test number validate our paths get theme details Check if a string only contains numbers UK Postcode Match IPv6 Addr. Character Description /. Users can add, edit, rate, and test regular expressions. This is actually a perfectly valid regex. I tried to join them together, but it was doing my head in, and I hadn't even got to allowing ' and " yet. Sometimes, you don’t know/remember the exact word you are looking for but only know what letters it starts with. All Programming languages provide efficient way to check the length of text. The following code uses that method to replace non-digits and non-letters with “”. It expects atleast 1 small-case letter, 1 Capital letter, 1 digit, 1 special character and the length should be between 6-10 characters. Just escape the dashes to prevent them from being interpreted (I don't think underscore needs escaping, but it can't hurt). Imagine you are writing an application and you want to set the rules for when a user chooses their username. only letters or numbers. NET Forums /. In R, you write regular expressions as strings, sequences of characters surrounded by quotes ("") or single quotes(''). What is a Regular Expression? This is a method in code or script to describe the format or pattern of a string. how can i do this? im assuming i need to use preg_replace but im not so clued up on the old regular expressions! Follow. Java String keep only letters and numbers example shows how to keep only letters and numbers in String. Regular expressions allow users to create complicated queries. IP Numbers. A phone number is considered valid as long as it is written in the form abc-def-hijk or 1-abc-def-hijk. rather than only on upper case letters. Putting them inside makes them additional valid characters rather than anchors. 3) Usernames have to be at least two characters long. Regular expression searching in dtSearch is limited to a single whole word. To acquire the numbers, we use the format string @"\D+" in the Regex. If you have little or no experience of regular expressions, you may find it easiest to study them in Writer rather than say Calc. To require the match to occur only at the beginning or end, use an anchor. :(/u/gangstanthony nailed it. query "[br]ang" will match both "adbarnirrang" and "bang" [^abc] means "begins with any. How to allow only alphanumeric characters in string using a-zA-Z0-9 pattern? Regular expression can be used to check if the string contains only alphanumeric characters or not. For instance in this case, we needed to ensure the username someone wanted was not all numbers or all letters and was 6-15 characters in length with no special characters. This can be done using the regular expression and the replaceAll method of String class. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: