file-writing

问题 #include iostream #include cmath #include fstream #include cstdlib #include string using namespace std; class Device {//Input and store Device Description and Serial Numbers protected: string serial_number; string device_description; public: Device() { serial_number = ("6DCMQ32"); device_description = ("TheDell"); } }; class Test {//Input and store Test Description, recent day, and month; Calculate the next day protected: string Test_Description; static int recent_month, recent_day, recent

问题 I am reading a CSV file called: candidates.csv line by line (row by row) like follows: import csv for line in open('candidates.csv'): csv_row = line.strip().split(',') check_update(csv_row[7]) #check_update is a function that returns an int How can I append the data that the check_updates function returns at the end of the line (row) that I am reading? Here is what I have tried: for line in open('candidates.csv'): csv_row = line.strip().split(',') data_to_add = check_update(csv_row[7]) with

问题 I am new to C++ and want to write data(integers) on a .txt file. The data is in three or more columns that can be read later for further usage. I have created successfully a reading project but for the writing one the file is created but it is blank. I have tried code samples from multiple sites but is not helping. I have to write results from three different equations as can be seen from the code. #include<iostream> #include<fstream> using namespace std; int main () { int i, x, y; ofstream

来源： https://stackoverflow.com/questions/63738738/unable-to-write-proc-sys-kernel-ns-last-pid-file

问题 I'm trying my hand at this rosalind problem and am running into an issue. I believe everything in my code is correct but it obviously isn't as it's not running as intended. i want to delete the contents of the file and then write some text to that file. The program writes the text that I want it to, but it doesn't first delete the initial contents. def ini5(file): raw = open(file, "r+") raw2 = (raw.read()).split("\n") clean = raw2[1::2] raw.truncate() for line in clean: raw.write(line) print

问题 I'm trying my hand at this rosalind problem and am running into an issue. I believe everything in my code is correct but it obviously isn't as it's not running as intended. i want to delete the contents of the file and then write some text to that file. The program writes the text that I want it to, but it doesn't first delete the initial contents. def ini5(file): raw = open(file, "r+") raw2 = (raw.read()).split("\n") clean = raw2[1::2] raw.truncate() for line in clean: raw.write(line) print

问题 If file is dragged and dropped from file explorer it has FileAttributes.ReadOnly flag for StorageFile.Attributes parameter. In that case using StorageFile api to write to file will give error. How to write to file in this case?? 回答1: In this case PathIO api can be used to write to file (unless file is a system file). Convert data to write into bytes array and then add following code to write to file: await PathIO.WriteBytesAsync(file.Path, bytes); This will write to these files without any

问题 I have a question about Python 2.7 read/write csv file with ' utf-8-sig ' code, my csv . header is ['\xef\xbb\xbfID;timestamp;CustomerID;Email'] there have some code( "\xef\xbb\xbfID" ) I read from file A.csv and I want write the same code and header to file B.csv My print log is shows: ['\xef\xbb\xbfID;timestamp;CustomerID;Email'] But the actual output file header it looks like ÔªøID;timestamp Here is the code: def remove_gdpr_info_from_csv(file_path, file_name, temp_folder, original_header)

问题 I was working on a script which reading a folder of files(each of size ranging from 20 MB to 100 MB), modifies some data in each line, and writes back to a copy of the file. with open(inputPath, 'r+') as myRead: my_list = myRead.readlines() new_my_list = clean_data(my_list) with open(outPath, 'w+') as myWrite: tempT = time.time() myWrite.writelines('\n'.join(new_my_list) + '\n') print(time.time() - tempT) print(inputPath, 'Cleaning Complete.') On running this code with a 90 MB file (~900,000

问题 I am writing a program to write text to a file based on user input, stopping when a blank line is entered, I.E. when hasNextLine is false. However, after running the program the file contains thousands of instances of the same line of input, which continues to grow until I kill the program. Could someone advise me on where I am going wrong please? import java.util.Scanner; import java.io.FileNotFoundException; import java.io.PrintWriter;; public class Lab_Week8_WriteAStory { public static