ascii

来源： https://stackoverflow.com/questions/4044903/django-filefield-encoding

来源： https://stackoverflow.com/questions/4044903/django-filefield-encoding

问题 I've seen lots of places say: The maximum number of characters is 255. where characters are ASCII. Is there a technical reason for that? EDIT: I know ASCII is represented by 8 bits and so there're 256 different characters. The question is why do they specify the maximum NUMBER of characters (with duplicates) is 255. 回答1: I assume the limit you're referring to is on the length of a string of ASCII characters. The limit occurs due to an optimization technique where smaller strings are stored

问题 I've seen lots of places say: The maximum number of characters is 255. where characters are ASCII. Is there a technical reason for that? EDIT: I know ASCII is represented by 8 bits and so there're 256 different characters. The question is why do they specify the maximum NUMBER of characters (with duplicates) is 255. 回答1: I assume the limit you're referring to is on the length of a string of ASCII characters. The limit occurs due to an optimization technique where smaller strings are stored

问题 Would like to replace all the french letters within words with their ASCII equivalent. letters = [['é', 'à'], ['è', 'ù'], ['â', 'ê'], ['î', 'ô'], ['û', 'ç']] for x in letters: for a in x: a = a.replace('é', 'e') a = a.replace('à', 'a') a = a.replace('è', 'e') a = a.replace('ù', 'u') a = a.replace('â', 'a') a = a.replace('ê', 'e') a = a.replace('î', 'i') a = a.replace('ô', 'o') a = a.replace('û', 'u') a = a.replace('ç', 'c') print letters[0][0] This code prints é however. How can I make this

问题 Would like to replace all the french letters within words with their ASCII equivalent. letters = [['é', 'à'], ['è', 'ù'], ['â', 'ê'], ['î', 'ô'], ['û', 'ç']] for x in letters: for a in x: a = a.replace('é', 'e') a = a.replace('à', 'a') a = a.replace('è', 'e') a = a.replace('ù', 'u') a = a.replace('â', 'a') a = a.replace('ê', 'e') a = a.replace('î', 'i') a = a.replace('ô', 'o') a = a.replace('û', 'u') a = a.replace('ç', 'c') print letters[0][0] This code prints é however. How can I make this

问题 Hey guys I am currently working with gnuplot. I have this .csv file which I have been using to plot some formulas (eg plot "filename.csv" u 0:day($0) = $0 ). The plots worked out; however, I was wondering if there was a way within gnuplot to save the output of my formulas as a data file too. 回答1: Please check the manual or in the gnuplot console type help table . Code: ### save data as text reset session f(x) = x g(x) = x**2 h(x) = x**3 set xrange[-5:5] set samples 11 plot f(x) w lp, g(x) w

问题 I have a dataframe which multiple columns and one column contains scrapped text from various links. I tried to convert that column to utf-8 but it didn't work. Here is my approach: df = pd.read_excel('data.xlsx',encoding=sys.getfilesystemencoding()) df['text'] = df['text'].apply(lambda x: x.encode('utf-8').strip()) print(df['text']) I get text with some ascii code : b"b'#Thank you, it\xe2\x80\x99s good to be ... df = pd.read_excel('data.xlsx',encoding=sys.getfilesystemencoding()) df['text'] =

问题 I am writing a program that will output data to a .txt file, that can be read by a person using a program like NotePad. Perhaps not necessarily ASCII, but something that the user can understand. Which one of these do I use? ByteArrayOutputStream FileOutputStream FilterOutputStream ObjectOutputStream OutputStream PipedOutputStream I have this assignment that asks me to use one of OutputStream subclasses specifically, so a Writer is not an option. Overview of the classes ByteArrayOutputStream

问题 I am a novice in assembly language programming I searched for binary search program and found this and I tried understand the program. It's working fine but I couldn't understand the success part of the code: what is ADD al,'0' and what is mov res,al ? .model small .stack 100h .data ARR DW 1000H,2000H,3000H,4000H,5000H,6000H LEN DW ($-ARR)/2 KEY EQU 2000H SUC DB "KEY IS FOUND AT$" FAILURE DB "KEY IS NOT FOUND$" RES DB "POSITION",13,10,"$" .CODE START: MOV AX,@data MOV DS,AX MOV BX,00 ;LOW MOV