Open file knowing only a part of its name

Question

I\'m currently reading a file and importing the data in it with the line:

# Read data from file.
data = np.loadtxt(join(mypath, \'file.data\'), unpack=True)
         


        

Answer 1

You can use the glob module. It allows pattern matching on filenames and does exactly what you're asking

import glob

for fpath in glob.glob(mypath):
    print fpath

e.g I have a directory with files named google.xml, google.json and google.csv.

I can use glob like this:

>>> import glob
>>> glob.glob('g*gle*')
['google.json', 'google.xml', 'google.csv']

Note that glob uses the fnmatch module but it has a simpler interface and it matches paths instead of filenames only.

You can search relative paths and don't have to use os.path.join. In the example above if I change to the parent directory and try to match file names, it returns the relative paths:

>>> import os
>>> import glob
>>> os.chdir('..')
>>> glob.glob('foo/google*')
['foo/google.json', 'foo/google.xml', 'foo/google.csv']