character

问题 So this character ▯ appears when I run my code which I think means there is a missing character therefor it can't be displayed. (Not sure correct me if I am wrong) And well basically I want to be able to get rid of that character. Here is what it looks like when I run my code: However in the back-end in the idle when I click on one of the boxes for it to be displayed up top it doesn't register and looks like this in idle: Why does it appear on screen if it isn't going to appear in idle? Also

问题 I know there are some answers here about splitting a string every nth character, such as this one and this one, However these are pretty question specific and mostly related to a single string and not to a data frame of multiple strings. Example data df <- data.frame(id = 1:2, seq = c('ABCDEFGHI', 'ZABCDJHIA')) Looks like this: id seq 1 1 ABCDEFGHI 2 2 ZABCDJHIA Splitting on every third character I want to split the string in each row every thrid character, such that the resulting data frame

问题 I have the following errors outputed when I work with $dom->loadHTML('<?xml version="1.0" encoding="UTF-8"?>' . $html); . Warning: DOMDocument::loadHTML() [domdocument.loadhtml]: Char 0xD860 out of allowed range in Entity, line: 1 in D:\xampp\xampp\htdocs\xampp\similarity\functions.php on line 438 Warning: DOMDocument::loadHTML() [domdocument.loadhtml]: Char 0xDEE2 out of allowed range in Entity, line: 1 in D:\xampp\xampp\htdocs\xampp\similarity\functions.php on line 438 Warning: DOMDocument:

问题 I'm working on a project which includes verifying the checksum of an Int input with the Damm Algorithm. I've managed to create a the operational table and my method for accessing the value in the table involves passing an interim value and a digit to pass in as the column value. ex. self.tableToUse[interim,checkSumArray[i]] Unfortunately, I've run into a snag when I'm trying to pass the digits from my input into the the get/set method where I cannot find a way to convert the Characters into

问题 In ASCII, the character < is encoded as a single-byte character 0x3C, what I'd like to know is that is there a character set where < is encoded differently? I tried UTF-8, it's the same. I tried GB2312 and it's the same... Another question, are all ASCII characters the same in all character sets? 回答1: The first 127 characters of ASCII are the same in all ASCII-derived character sets. They are not the same in non-ASCII-character sets (such as EBCDIC). Characters with codes > 127 are different

问题 How would I delete everything after a certain character of a string in python? For example I have a string containing a file path and some extra characters. How would I delete everything after .zip? I've tried rsplit and split , but neither included the .zip when deleting extra characters. Any suggestions? 回答1: Just take the first portion of the split, and add '.zip' back: s = 'test.zip.zyz' s = s.split('.zip', 1)[0] + '.zip' Alternatively you could use slicing, here is a solution where you

问题 With the code below, no matter what the first letter of the input is, it is always determined as a vowel: original = raw_input("Please type in a word: ") firstLetter = original[0] print firstLetter if firstLetter == "a" or "e" or "i" or "o" or "u": print "vowel" else: print "consonant" In fact, it doesn't matter what the boolean is in the if statement... if it is == or != , it is still return "vowel" . Why? 回答1: Python is not the English language. If you have a bunch of expressions with or or

问题 I want to disable the Unix shell prompt character ( $ , # , % ) which usually we see in terminal. Is there any command or setting which can do this? I am using Solaris OS. By shell prompt character I mean: >$ ># 回答1: You need to adjust your PS1 environment variable in your .profile file. I guess you could set it to "" to have it empty. ex: export PS1="" EDIT: it can also be in your .bashrc file, or any other shell you are using. 回答2: You can get fancy and put the host name in there. But

问题 the problem as the title. 回答1: You should get the value of "font-weight" CSS property. In IE the bold value is "700" while in Firefox it will be "bold". You need to get the computed style (FF) or current style (IE) of the element. So for IE you will need to execute the following (it is in Java): String strBold = selenium.getEval("var el = this.browserbot.findElement(<locator>);bold = el.currentStyle.fontWeight;"); boolean bold = "700".equals(strBold); For the Firefox: String strBold =

问题 I have a data frame like this df <- data.frame(id=c(1, 2, 3, 4, 5), staple_1=c("potato", "cassava","rice","fruit","coffee"), staple_2=c("cassava","beer","peanuts","rice","yams"), staple_3=c("rice","peanuts","fruit","fruit","rice")) I also have a character vector like this staples<-c("potato","cassava","rice","yams") I would like to create a new variable that is the row sum of the occurrence of any of the words in the "staples" character vector. The outcome of which should look like this df