diff options
Diffstat (limited to 'Lib/urllib.py')
| -rw-r--r-- | Lib/urllib.py | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/Lib/urllib.py b/Lib/urllib.py index b248b8a..0720125 100644 --- a/Lib/urllib.py +++ b/Lib/urllib.py @@ -203,7 +203,7 @@ class URLopener: if self.tempcache and url in self.tempcache: return self.tempcache[url] type, url1 = splittype(url) - if not filename and (not type or type == 'file'): + if filename is None and (not type or type == 'file'): try: fp = self.open_local_file(url1) hdrs = fp.info() @@ -662,7 +662,7 @@ _localhost = None def localhost(): """Return the IP address of the magic hostname 'localhost'.""" global _localhost - if not _localhost: + if _localhost is None: _localhost = socket.gethostbyname('localhost') return _localhost @@ -670,7 +670,7 @@ _thishost = None def thishost(): """Return the IP address of the current host.""" global _thishost - if not _thishost: + if _thishost is None: _thishost = socket.gethostbyname(socket.gethostname()) return _thishost @@ -678,7 +678,7 @@ _ftperrors = None def ftperrors(): """Return the set of errors raised by the FTP class.""" global _ftperrors - if not _ftperrors: + if _ftperrors is None: import ftplib _ftperrors = ftplib.all_errors return _ftperrors @@ -687,7 +687,7 @@ _noheaders = None def noheaders(): """Return an empty mimetools.Message object.""" global _noheaders - if not _noheaders: + if _noheaders is None: import mimetools import StringIO _noheaders = mimetools.Message(StringIO.StringIO(), 0) |