text-files

问题 The following code allows me to create a directory if it does not already exist. dir = 'path_to_my_folder' if not os.path.exists(dir): os.makedirs(dir) The folder will be used by a program to write text files into that folder. But I want to start with a brand new, empty folder next time my program opens up. Is there a way to overwrite the folder (and create a new one, with the same name) if it already exists? 回答1: import os import shutil dir = 'path_to_my_folder' if os.path.exists(dir):

问题 How to write a text header in text file? for example in the example below, how to write the header code salay month just once? Code Salary Month 12 1000 12 14 1020 11 11 1212 9 The code: fid = fopen('analysis1.txt','wt'); for i=1:10 array = []; % empty the array .... array = [code salary month]; format short g; fprintf(fid,'%g\t %g\t %g\n',array); % write to file end fclose(fid); 回答1: Is there any reason for not using simple solution like following? ... fid = fopen('analysis1.txt','wt');

问题 Over at Can you modify text files when committing to subversion? Grant suggested that I block commits instead. However I don't know how to check a file ends with a newline. How can you detect that the file ends with a newline? 回答1: @Konrad : tail does not return an empty line. I made a file that has some text that doesn't end in newline and a file that does. Here is the output from tail: $ cat test_no_newline.txt this file doesn't end in newline$ $ cat test_with_newline.txt this file ends in

问题 I have multiple text file with about 100,000 lines and I want to split them into smaller text files of 5000 lines each. I used: split -l 5000 filename.txt That creates files: xaa xab aac xad xbe aaf files with no extensions. I just want to call them something like: file01.txt file02.txt file03.txt file04.txt or if that is not possible, i just want them to have the ".txt" extension. 回答1: I know the question has been asked a long time ago, but I am surprised that nobody has given the most

问题 This question already has answers here : Text editor to open big (giant, huge, large) text files [closed] (2 answers) Closed 4 years ago . I have a .txt file whose memory is more than 2 GB. The problem is I cannot open it with Notepad, Notepad++ or any other editor programs. Any solutions? 回答1: Try Glogg. the fast, smart log explorer. I have opened log file of size around 2 GB , and the search is also very fast . 回答2: WordPad will open any text file no matter the size. However, it has limited

问题 I just was wodering if there's an equivalent to MySQL LOAD DATA INFILE statemnent in Oracle? I need it because I want to read from a huge textfile into a database table. 回答1: Oracle gives the SQLLoader commandline utility. But it relies on a proper formatting of the data file. You can try to look at Oracle External Tables (e.g. you can link a csv file as an external table and see it as a table within Oracle). Both solutions have pros and cons, but the big cons is that they still rely on data

问题 I read and understand how to block an ip using htaccess: order deny,allow deny from 111.222.33.44 deny from 55.66.77.88 ... allow from all But my list of black IPs includes thousands of IPs. I save all IPs to a blacklist.txt file. Can I use htaccess to call blacklist.txt and block all IPs which are stored in this file? If so, how? 回答1: You can try using variations of RewriteMap. You'll need access to the server/vhost config because that directive only works there. You can then use the map

问题 This question already has answers here : How to recursively list all the files in a directory in C#? (19 answers) Closed 6 years ago . I wanted to know if it is possible to get all the names of text files in a certain folder. For example, I have a folder with the name Maps, and I would like to get the names of all the text files in that folder and add it to a list of strings. Is it possible, and if so, how I can achieve this? 回答1: DirectoryInfo d = new DirectoryInfo(@"D:\Test");//Assuming

问题 I am doing a homework to programming in C. Bonus points are for quick writing to the file in there upload test system. I am trying to write a number of lines each comprising three space delimited decimal integer strings and then '\n' in file. The problem is, that fprintf is too slow (their reference time is more or less 1/3 faster). I have tried a lots of possibilities (everything is in one for loop). fprintf (too slow): fprintf(f, "%d %d %d\n", a[i], b[i], c[i]); converting to string and

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 4 years ago . I need to create a table with borders from the text file (this text file is updated every time when someone finishes filling a form. One row, one person): Herard|TRO789|Suzuki|France|Gendolfina|Fresko|food|500|2015-04-25 14:40 Bob|MGA789|Mercedes|Latvia|Polaris|Dread|parts|1000