diff options
Diffstat (limited to 'Lib/argparse.py')
| -rw-r--r-- | Lib/argparse.py | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/Lib/argparse.py b/Lib/argparse.py index 57eaaad..5fd82da 100644 --- a/Lib/argparse.py +++ b/Lib/argparse.py @@ -1121,7 +1121,7 @@ class FileType(object): the builtin open() function. """ - def __init__(self, mode='r', bufsize=None): + def __init__(self, mode='r', bufsize=-1): self._mode = mode self._bufsize = bufsize @@ -1137,14 +1137,15 @@ class FileType(object): raise ValueError(msg) # all other arguments are used as file names - if self._bufsize: + try: return open(string, self._mode, self._bufsize) - else: - return open(string, self._mode) + except IOError as e: + message = _("can't open '%s': %s") + raise ArgumentTypeError(message % (string, e)) def __repr__(self): - args = [self._mode, self._bufsize] - args_str = ', '.join([repr(arg) for arg in args if arg is not None]) + args = self._mode, self._bufsize + args_str = ', '.join(repr(arg) for arg in args if arg != -1) return '%s(%s)' % (type(self).__name__, args_str) # =========================== |