How to Open Every File in a Folder

How to open every file in a folder

Os

You can list all files in the current directory using os.listdir:

import os
for filename in os.listdir(os.getcwd()):
   with open(os.path.join(os.getcwd(), filename), 'r') as f: # open in readonly mode
      # do your stuff

Glob

Or you can list only some files, depending on the file pattern using the glob module:

import os, glob
for filename in glob.glob('*.txt'):
   with open(os.path.join(os.getcwd(), filename), 'r') as f: # open in readonly mode
      # do your stuff

It doesn't have to be the current directory you can list them in any path you want:

import os, glob
path = '/some/path/to/file'
for filename in glob.glob(os.path.join(path, '*.txt')):
   with open(os.path.join(os.getcwd(), filename), 'r') as f: # open in readonly mode
      # do your stuff

Pipe

Or you can even use the pipe as you specified using fileinput

import fileinput
for line in fileinput.input():
    # do your stuff

And you can then use it with piping:

ls -1 | python parse.py

loop through folder in python and open files throws an error

os.listdir() gives you only the filename, but not the path to the file:

import os

for filename in os.listdir('path/to/dir'):
    if filename.endswith('.log'):
        with open(os.path.join('path/to/dir', filename)) as f:
            content = f.read()

Alternatively, you could use the glob module. The glob.glob() function allows you to filter files using a pattern:

import os
import glob

for filepath in glob.glob(os.path.join('path/to/dir', '*.log')):
    with open(filepath) as f:
        content = f.read()

Find all files in a directory with extension .txt in Python

You can use glob:

import glob, os
os.chdir("/mydir")
for file in glob.glob("*.txt"):
    print(file)

or simply os.listdir:

import os
for file in os.listdir("/mydir"):
    if file.endswith(".txt"):
        print(os.path.join("/mydir", file))

or if you want to traverse directory, use os.walk:

import os
for root, dirs, files in os.walk("/mydir"):
    for file in files:
        if file.endswith(".txt"):
             print(os.path.join(root, file))

How to read all files in a folder using C

You can use this sample code and modify it if you need:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <dirent.h>
#include <unistd.h>
#include <errno.h>

/* This is just a sample code, modify it to meet your need */
int main(int argc, char **argv)
{
    DIR* FD;
    struct dirent* in_file;
    FILE    *common_file;
    FILE    *entry_file;
    char    buffer[BUFSIZ];

    /* Openiing common file for writing */
    common_file = fopen(path_to_your_common_file, "w");
    if (common_file == NULL)
    {
        fprintf(stderr, "Error : Failed to open common_file - %s\n", strerror(errno));

        return 1;
    }

    /* Scanning the in directory */
    if (NULL == (FD = opendir (in_dir))) 
    {
        fprintf(stderr, "Error : Failed to open input directory - %s\n", strerror(errno));
        fclose(common_file);

        return 1;
    }
    while ((in_file = readdir(FD))) 
    {
        /* On linux/Unix we don't want current and parent directories
         * On windows machine too, thanks Greg Hewgill
         */
        if (!strcmp (in_file->d_name, "."))
            continue;
        if (!strcmp (in_file->d_name, ".."))    
            continue;
        /* Open directory entry file for common operation */
        /* TODO : change permissions to meet your need! */
        entry_file = fopen(in_file->d_name, "rw");
        if (entry_file == NULL)
        {
            fprintf(stderr, "Error : Failed to open entry file - %s\n", strerror(errno));
            fclose(common_file);

            return 1;
        }

        /* Doing some struf with entry_file : */
        /* For example use fgets */
        while (fgets(buffer, BUFSIZ, entry_file) != NULL)
        {
            /* Use fprintf or fwrite to write some stuff into common_file*/
        }

        /* When you finish with the file, close it */
        fclose(entry_file);
    }

    /* Don't forget to close common file before leaving */
    fclose(common_file);

    return 0;
}

Hope this hellp.

Regards.

Open all files in a folder using notepad++

You can just simply drag the folder containing your site files into notepad++. It opens all files(I assume it just opens txt,html, and other compatible files) including ones in sub directories.

Alternatively, if you want to do them one month at a time you could do File>Open and then shift+click from the top to the bottom to select as many files as you want.

Or just use a better text editor like sublime text where you can just open entire folders

Open all files in a folder

Sounds like you're on linux or some Unix variant.
Using the asterisk gets you all files in the current folder:

$ vim *

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