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Replace boolean test with is None.

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This commit is contained in:
Raymond Hettinger 2002-06-01 16:07:16 +00:00
parent 793d4b4936
commit 16e3c427f3
7 changed files with 12 additions and 12 deletions
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10
Lib/mhlib.py
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@ -98,9 +98,9 @@ class MH:
def __init__(self, path = None, profile = None):
"""Constructor."""
if not profile: profile = MH_PROFILE
if profile is None: profile = MH_PROFILE
self.profile = os.path.expanduser(profile)
if not path: path = self.getprofile('Path')
if path is None: path = self.getprofile('Path')
if not path: path = PATH
if not os.path.isabs(path) and path[0] != '~':
path = os.path.join('~', path)
@ -665,7 +665,7 @@ class Message(mimetools.Message):
"""Constructor."""
self.folder = f
self.number = n
if not fp:
if fp is None:
path = f.getmessagefilename(n)
fp = open(path, 'r')
mimetools.Message.__init__(self, fp)
@ -679,7 +679,7 @@ class Message(mimetools.Message):
argument is specified, it is used as a filter predicate to
decide which headers to return (its argument is the header
name converted to lower case)."""
if not pred:
if pred is None:
return ''.join(self.headers)
headers = []
hit = 0
@ -791,7 +791,7 @@ class IntSet:
self.pairs = []
self.sep = sep
self.rng = rng
if data: self.fromstring(data)
if data is not None: self.fromstring(data)
def reset(self):
self.pairs = []