How to count the number of files in a directory using Python

Question

I need to count the number of files in a directory using Python   I guess the easiest way is len glob glob        but that also counts the directory itself as a file   Is there any way to count only the files in a directory

User · Answer

While I agree with the answer provided by @DanielStutzbach: os.listdir() will be slightly more efficient than using glob.glob.

However, an extra precision, if you do want to count the number of specific files in folder, you want to use len(glob.glob()). For instance if you were to count all the pdfs in a folder you want to use:

pdfCounter = len(glob.glob1(myPath,"*.pdf"))

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import os  total con os listdir   lt directory path gt     files     for f n in total con     if os path isfile f n        files append f n    print len files

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I found another answer which may be correct as accepted answer   for root  dirs  files in os walk input path       for name in files      if os path splitext name  1       TXT  or os path splitext name  1       txt           datafiles append os path join root name      print len files

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i did this and this returned the number of files in the folder Attack Data    this works fine   import os def fcount path        Counts the number of files in a directory     count   0     for f in os listdir path           if os path isfile os path join path  f                count    1      return count path   r C  Users EE EKORO Desktop Attack Data   Read files in folder print  fcount path

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An answer with pathlib and without loading the whole list to memory  from pathlib import Path  path   Path       print sum 1 for   in path glob           Files and folders  not recursive print sum 1 for   in path glob              Files and folders  recursive  print sum 1 for x in path glob      if x is file        Only files  not recursive print sum 1 for x in path glob         if x is file        Only files  recursive

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def count em valid path      x   0    for root  dirs  files in os walk valid path          for f in files              x   x 1 print  There are   x   files in this directory   return x   Taked from this post

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A simple utility function I wrote that makes use of os scandir   instead of os listdir    import os   def count files in dir path  str  - gt  int      file entries    entry for entry in os scandir path  if entry is file         return len file entries   The main benefit is that  the need for os path is file   is eliminated and replaced with os DirEntry instance s is file   which also removes the need for os path join DIR  file name  as shown in other answers

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Here is a simple one-line command that I found useful   print int os popen  ls   wc -l   read

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import os  path  dirs  files   next os walk   usr lib    file count   len files

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Luke s code reformat   import os  print len os walk   usr lib   next   2

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I am surprised that nobody mentioned os scandir    def count files dir       return len  1 for x in list os scandir dir   if x is file

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Short and simple import os directory path     home xyz   No of files   len os listdir directory path

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It is simple   print len  iq for iq in os scandir  PATH        it simply counts number of files in directory   i have used list comprehension technique to iterate through specific directory returning all files in return    len returned list   returns number of files

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import os print len os listdir os getcwd

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This is where fnmatch comes very handy   import fnmatch  print len fnmatch filter os listdir dirpath      txt      More details  http   docs python org 2 library fnmatch html

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I used glob iglob for a directory structure similar to  data  ---train       ---subfolder1               file111 png               file112 png                                ---subfolder2               file121 png               file122 png                    ---test          file221 png          file222 png   Both of the following options return 4  as expected  i e  does not count the subfolders themselves    len list glob iglob  data train     png   recursive True    sum 1 for i in glob iglob  data train     png

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import os  def count files in directory       joiner   in directory   os path sep    add       return sum          os path isfile filename          for filename         in map joiner  os listdir in directory           gt  gt  gt  count files   usr lib   1797  gt  gt  gt  len os listdir   usr lib    2049

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This uses os listdir and works for any directory   import os directory    mydirpath   number of files   len  item for item in os listdir directory  if os path isfile os path join directory  item       this can be simplified with a generator and made a little bit faster with   import os isfile   os path isfile join   os path join  directory    mydirpath  number of files   sum 1 for item in os listdir directory  if isfile join directory  item

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This is an easy solution that counts the number of files in a directory containing sub-folders  It may come in handy  import os from pathlib import Path  def count files rootdir          counts the number of files in each subfolder in a directory        for path in pathlib Path rootdir  iterdir            if path is dir                print  quot There are  quot    str len  name for name in os listdir path                if os path isfile os path join path  name         quot  files in  quot                  str path name                  count files data dir    data dir is the directory you want files counted   You should get an output similar to this  with the placeholders changed  of course   There are  number of files  files in  name of sub-folder1  There are  number of files  files in  name of sub-folder2

User · Answer

os listdir   will be slightly more efficient than using glob glob   To test if a filename is an ordinary file  and not a directory or other entity   use os path isfile     import os  os path    simple version for working with CWD print len  name for name in os listdir      if os path isfile name       path joining version for other paths DIR     tmp  print len  name for name in os listdir DIR  if os path isfile os path join DIR  name

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For all kind of files  subdirectories included   import os  list   os listdir dir    dir is your directory path number files   len list  print number files   Only files  avoiding subdirectories    import os  onlyfiles   next os walk dir   2   dir is your directory path as string print len onlyfiles

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If you want to count all files in the directory - including files in subdirectories  the most pythonic way is   import os  file count   sum len files  for       files in os walk r C  Dropbox    print file count    We use sum that is faster than explicitly adding the file counts  timings pending

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def directory path extension     list dir        list dir   os listdir path    count   0   for file in list dir      if file endswith extension     eg    txt        count    1   return count

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one liner and recursive  def count files path       return sum  len files  for       files in os walk path     count files  path to dir

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I solved this problem while calculating the number of files in a google drive directory through Google Colab by directing myself into the directory folder by import os                                                                                                  cd  content drive My Drive    print len  x for x in os listdir  folder name         Normal user can try  import os                                                                                                       cd Desktop Maheep                                                        print len  x for x in os listdir  folder name

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If you ll be using the standard shell of the operating system  you can get the result much faster rather than using pure pythonic way   Example for Windows   import os import subprocess  def get num files path       cmd    DIR    s    A-D  B  S   FIND  C  V       path     return int subprocess check output cmd  shell True

[python] How to count the number of files in a directory using Python

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