本文整理匯總了Python中__builtin__.filter方法的典型用法代碼示例。如果您正苦於以下問題：Python __builtin__.filter方法的具體用法？Python __builtin__.filter怎麽用？Python __builtin__.filter使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類__builtin__的用法示例。
在下文中一共展示了__builtin__.filter方法的7個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: oldfilter
# 需要導入模塊: import __builtin__ [as 別名]
# 或者: from __builtin__ import filter [as 別名]
def oldfilter(*args):
"""
filter(function or None, sequence) -> list, tuple, or string
Return those items of sequence for which function(item) is true.
If function is None, return the items that are true. If sequence
is a tuple or string, return the same type, else return a list.
"""
mytype = type(args[1])
if isinstance(args[1], basestring):
return mytype().join(builtins.filter(*args))
elif isinstance(args[1], (tuple, list)):
return mytype(builtins.filter(*args))
else:
# Fall back to list. Is this the right thing to do?
return list(builtins.filter(*args))
# This is surprisingly difficult to get right. For example, the
# solutions here fail with the test cases in the docstring below:
# http://stackoverflow.com/questions/8072755/ 示例2: __and__
# 需要導入模塊: import __builtin__ [as 別名]
# 或者: from __builtin__ import filter [as 別名]
def __and__(self, other):
"""Intersection is the minimum of corresponding counts.
>>> Counter('abbb') & Counter('bcc')
Counter({'b': 1})
"""
if not isinstance(other, Counter):
return NotImplemented
_min = min
result = Counter()
if len(self) < len(other):
self, other = other, self
for elem in filter(self.__contains__, other):
newcount = _min(self[elem], other[elem])
if newcount > 0:
result[elem] = newcount
return result 示例3: oldfilter
# 需要導入模塊: import __builtin__ [as 別名]
# 或者: from __builtin__ import filter [as 別名]
def oldfilter(*args):
"""
filter(function or None, sequence) -> list, tuple, or string
Return those items of sequence for which function(item) is true.
If function is None, return the items that are true. If sequence
is a tuple or string, return the same type, else return a list.
"""
mytype = type(args[1])
if isinstance(args[1], basestring):
return mytype().join(builtins.filter(*args))
elif isinstance(args[1], (tuple, list)):
return mytype(builtins.filter(*args))
else:
# Fall back to list. Is this the right thing to do?
return list(builtins.filter(*args))
# This is surprisingly difficult to get right. For example, the
# solutions here fail with the test cases in the docstring below:
# http://stackoverflow.com/questions/8072755/ 示例4: __and__
# 需要導入模塊: import __builtin__ [as 別名]
# 或者: from __builtin__ import filter [as 別名]
def __and__(self, other):
''' Intersection is the minimum of corresponding counts.
>>> Counter('abbb') & Counter('bcc')
Counter({'b': 1})
'''
if not isinstance(other, Counter):
return NotImplemented
_min = min
result = Counter()
if len(self) < len(other):
self, other = other, self
for elem in filter(self.__contains__, other):
newcount = _min(self[elem], other[elem])
if newcount > 0:
result[elem] = newcount
return result 示例5: update_priority
# 需要導入模塊: import __builtin__ [as 別名]
# 或者: from __builtin__ import filter [as 別名]
def update_priority(self):
"""Updates priority channels
"""
# Clear the priority channels
self.priority_channels = []
# Process priority file if it was provided
if self.priority_file_name != "":
# Open file, split to list, remove empty strings
with open(self.priority_file_name) as priority_file:
lines = priority_file.read().splitlines()
priority_file.close()
lines = __builtin__.filter(None, lines)
# Convert to baseband frequencies, round, and append if within BW
for freq in lines:
bb_freq = float(freq) - self.center_freq
bb_freq = round(bb_freq/self.channel_spacing)*\
self.channel_spacing
if abs(bb_freq) <= self.samp_rate/2.0:
self.priority_channels.append(bb_freq)
else:
pass
else:
pass 示例6: lfilter
# 需要導入模塊: import __builtin__ [as 別名]
# 或者: from __builtin__ import filter [as 別名]
def lfilter(*args, **kwargs):
return list(filter(*args, **kwargs)) 示例7: clear_lockout
# 需要導入模塊: import __builtin__ [as 別名]
# 或者: from __builtin__ import filter [as 別名]
def clear_lockout(self):
"""Clears lockout channels and updates GUI list
"""
# Clear the lockout channels
self.lockout_channels = []
# Process lockout file if it was provided
if self.lockout_file_name != "":
# Open file, split to list, remove empty strings
with open(self.lockout_file_name) as lockout_file:
lines = lockout_file.read().splitlines()
lockout_file.close()
lines = __builtin__.filter(None, lines)
# Convert to baseband frequencies, round, and append
for freq in lines:
bb_freq = float(freq) - self.center_freq
bb_freq = round(bb_freq/self.channel_spacing)*\
self.channel_spacing
self.lockout_channels.append(bb_freq)
else:
pass
# Create a lockout channel list of strings for the GUI
self.gui_lockout_channels = []
for lockout_channel in self.lockout_channels:
gui_lockout_channel = (lockout_channel + \
self.receiver.center_freq)/1E6
text = '{:.3f}'.format(gui_lockout_channel)
self.gui_lockout_channels.append(text)