Question

我一直在尝试使用Python阅读Hyperledger Fabric中handling Unix signals in Qt中给出的data = open("twoorgs.genesis.block").read()的内容。但是，每当我尝试使用

使用Python读取文件时

data

>>> data '\n'变量的值如下：

fs.readFileSync()

对于使用Buffer()的nodej，我为同一个文件获取了var data = fs.readFileSync('./twoorgs.genesis.block');的实例。

> data
<Buffer 0a 22 1a 20 49 63 63 ac 9c 9f 3e 48 2c 2c 6b 48 2b 1f 8b 18 6f a9 db ac 45 07 29 ee c0 bf ac 34 99 9e c2 56 12 e1 84 01 0a dd 84 01 0a d9 84 01 0a 79 ... >

结果是

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#define MAX_WORD_LEN 100
#define MAX_LINE_LEN 1000

#define ipsumFile "Lorem ipsum.txt"
#define ipsumCopy "Lorem ipsum_COPY.txt"

int wordCount(FILE *fp);
int charCount(FILE *fp);
int sendContentTo(FILE *fp, FILE *out);
int getWordAt(FILE *fp, int pos, char *word);
int appendToFile(char *fileName, char *newText);

int main(void)
{
    FILE *fp, *fp2; //"file pointer"
    int ch; //place to store each character as read

    //open Lorem ipsum.txt for read
    if ((fp = fopen(ipsumFile, "r")) == NULL)
    {
        fprintf(stdout, "Can't open %s file.\n", ipsumFile);
        exit(EXIT_FAILURE);
    }

    //open Lorem ipsumCopy for writing
    if ((fp2 = fopen(ipsumCopy, "w+")) == NULL)
    {
        fprintf(stdout, "Can't open %s file.\n", ipsumCopy);
        exit(EXIT_FAILURE);
    }

    //print out and count all words in Lorem ipsum.txt
    int numOfWords = wordCount(fp);

    //print out and count all lines in Lorem ipsum.txt
    int numOfLines = sendContentTo(fp, stdout);

    //copy the content of Lorem ipsum.txt into a new file (ipsumCopy)
    numOfLines = sendContentTo(fp, fp2);

    fclose(ipsumFile);
    fclose(ipsumCopy);

    // close Lorem ipsum.txt
    if (fclose(fp) != 0)
        fprintf(stderr, "Error closing file\n");
    if (fclose(fp2) != 0)
        fprintf(stderr, "Error closing copy\n");
    return 0;
}

int sendContentTo(FILE *in, FILE *out)
{
    fprintf(stdout, "Performing file copy...\n\n");

    //start at the beginning of the file
    rewind(in);

    // array to hold one line of text up to 1000 characters
    char line[MAX_LINE_LEN];

    int lineCount = 0;

    // read one line at a time from our input file
    while (fgets(line, MAX_LINE_LEN, in) != NULL)
    {
        //send line we just read to output.
        fprintf(out, "%s", line);

        //count the lines
        lineCount++;
    }

    fprintf(stdout, "\nFinished line count.\n");
    fprintf(stdout, "Count is: %d.\n\n", lineCount);

    // Return how many text lines
    // we've processed from input file.
    return lineCount;
}

// Read content from file one character at a time.
// Returns number of total characters read from the file.
int charCount(FILE *fp)
{
    fprintf(stdout, "Performing char count...\n\n");

    rewind(fp);

    int charCount = 0;
    char ch;


    //print out each character, and return the
    // number of characters in the file.
    fprintf(stdout, "\nFinished character count. \n");
    fprintf(stdout, "Count is: %d. \n\n", charCount);

    return charCount;
}


// Read content from file one word at a time.
// Returns number of total words read from the file.
int wordCount(FILE *fp)
{
    fprintf(stdout, "Performing word count...\n\n");

    rewind(fp);

    char word[MAX_WORD_LEN];
    int wordCount = 0;

    while (fscanf(fp, "%s", word) == 1)
    {
        // Send entire word string
        // we just read to console
        puts(word);

        //count the word
        wordCount++;
    }

    fprintf(stdout, "\nFinished word count.\n");
    fprintf(stdout, "Count is: %d.\n\n", wordCount);
    return wordCount;
}

如何使用Python成功读取此文件？

Answer 1

您的文件中包含1a。这是Ctrl-Z，它是Windows上的文件结尾。

所以尝试二进制模式，如：

data = open("twoorgs.genesis.block", 'rb').read()

使用node和python读取同一文件时的结果差异

1 个答案: