Unix filename wildcards in Python?

How do Unix filename wildcards work from Python?

A given directory contains only subdirectories, in each of which there is (among others) one file whose name ends with a known string, say _ext. The first part of the filename always varies, so I need to get to the file by using this pattern.

I wanted to do this:

directory = "."
listofSubDirs = [x[0] for x in os.walk(directory)]
listofSubDirs = listofSubDirs[1:] #removing "."

for subDirectory in listofSubDirs:
    fileNameToPickle = subDirectory + "/*_ext" #only one such file exists
    fileToPickle = pickle.load(open(fileNameToPickle, "rb"))
    ... do stuff ...

But no pattern matching happens. How does it work under Python?

Copyright Notice：Content Author:「Ricky Robinson」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/15949694/unix-filename-wildcards-in-python