Klaus Neuner a écrit :
Hello,
I am writing a program that analyzes files of different formats. I
would like to use a function for each format. Obviously, functions can
be mapped to file formats. E.g. like this:
if file.endswith('xyz'):
xyz(file)
elif file.endswith('abc'):
abc(file)
...
Yet, I would prefer to do something of the following kind:
func = file[-3:]
A file extension is not necessarily 3 chars long.
apply_func(func, file)
Can something of this kind be done in Python?
The simplest (and canonical) solution is to use a dict:
def handle_txt(path):
# code here
def handle_py(path):
# code here
etc...
def handle_default(path):
# for anything else
handlers = {
".txt" : handle_txt,
".py" : handle_py,
# etc
}
import os
def handle_file(path):
dummy, ext = os.path.splitext(path)
handler = handlers.get(ext, handle_default)
return handler(path)
HTH
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