Python How to list all files in a directory?
By：Roy.LiuLast updated：2019-08-11
In Python, we can use os.walker or glob to create a find() like function to search or list files or folders in a specified directory and also it’s subdirectories.
1. os.walker
1.1 List all .txt files in a specified directory + subdirectories.
import os
path = 'c:\\projects\\hc2\\'
files = []
# r=root, d=directories, f = files
for r, d, f in os.walk(path):
for file in f:
if '.txt' in file:
files.append(os.path.join(r, file))
for f in files:
print(f)
Output
c:\projects\hc2\app\readme.txt c:\projects\hc2\app\release.txt c:\projects\hc2\web\readme.txt c:\projects\hc2\whois\download\afrinic.txt c:\projects\hc2\whois\download\apnic.txt c:\projects\hc2\whois\download\arin.txt c:\projects\hc2\whois\download\lacnic.txt c:\projects\hc2\whois\download\ripe.txt c:\projects\hc2\whois\out\test\resources\asn\afrinic\3068.txt c:\projects\hc2\whois\out\test\resources\asn\afrinic\37018.txt //...
1.2 List all directories in a specified directory + subdirectories.
import os
path = 'c:\\projects\\hc2\\'
folders = []
# r=root, d=directories, f = files
for r, d, f in os.walk(path):
for folder in d:
folders.append(os.path.join(r, folder))
for f in folders:
print(f)
Output
c:\projects\hc2\ c:\projects\hc2\analyzer\ c:\projects\hc2\analyzer\out\ c:\projects\hc2\analyzer\out\production\ c:\projects\hc2\analyzer\out\production\classes\ c:\projects\hc2\analyzer\out\production\classes\com\ //...
2. glob
Changed in version 3.5: Support for recursive globs using **.
2.1 List all .txt files in a specified directory + subdirectories (**).
import glob
path = 'c:\\projects\\hc2\\'
files = [f for f in glob.glob(path + "**/*.txt", recursive=True)]
for f in files:
print(f)
Output
c:\projects\hc2\app\readme.txt c:\projects\hc2\app\release.txt c:\projects\hc2\web\readme.txt c:\projects\hc2\whois\download\afrinic.txt c:\projects\hc2\whois\download\apnic.txt c:\projects\hc2\whois\download\arin.txt c:\projects\hc2\whois\download\lacnic.txt c:\projects\hc2\whois\download\ripe.txt c:\projects\hc2\whois\out\test\resources\asn\afrinic\3068.txt c:\projects\hc2\whois\out\test\resources\asn\afrinic\37018.txt //...
2.2 List all directories in a specified directory + subdirectories (**).
import glob
folders = [f for f in glob.glob(path + "**/", recursive=True)]
for f in folders:
print(f)
Output
c:\projects\hc2\ c:\projects\hc2\analyzer\ c:\projects\hc2\analyzer\out\ c:\projects\hc2\analyzer\out\production\ c:\projects\hc2\analyzer\out\production\classes\ c:\projects\hc2\analyzer\out\production\classes\com\ //...
References
From：一号门
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