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体验新版 GitCode,发现更多精彩内容 >>
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963de16b
编写于
2月 22, 2017
作者:
H
Helin Wang
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差异文件
change from google python style to pep 287
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59ca13a3
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1
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1 changed file
with
24 addition
and
31 deletion
+24
-31
python/paddle/reader/decorator.py
python/paddle/reader/decorator.py
+24
-31
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python/paddle/reader/decorator.py
浏览文件 @
963de16b
...
@@ -21,19 +21,17 @@ import random
...
@@ -21,19 +21,17 @@ import random
def
shuffle
(
reader
,
buf_size
):
def
shuffle
(
reader
,
buf_size
):
"""Creates a data reader whose data output is suffled.
"""
Creates a data reader whose data output is suffled.
Output from the iterator that created by original reader will be
Output from the iterator that created by original reader will be
buffered into shuffle buffer, and then shuffled. The size of shuffle buffer
buffered into shuffle buffer, and then shuffled. The size of shuffle buffer
is determined by argument buf_size.
is determined by argument buf_size.
Args:
:param reader: the original reader whose output will be shuffled.
reader: the original reader whose output will be
:param buf_size: shuffle buffer size.
shuffled.
buf_size: shuffle buffer size.
Returns:
:returns:the new reader whose output is shuffled.
the new reader whose output is shuffled.
"""
"""
def
data_reader
():
def
data_reader
():
...
@@ -55,8 +53,9 @@ def shuffle(reader, buf_size):
...
@@ -55,8 +53,9 @@ def shuffle(reader, buf_size):
def
chain
(
*
readers
):
def
chain
(
*
readers
):
"""Creates a data reader whose output is the outputs of input data
"""
readers chained together.
Creates a data reader whose output is the outputs of input data
readers chained together.
If input readers output following data entries:
If input readers output following data entries:
[0, 0, 0]
[0, 0, 0]
...
@@ -65,11 +64,8 @@ def chain(*readers):
...
@@ -65,11 +64,8 @@ def chain(*readers):
The chained reader will output:
The chained reader will output:
[0, 0, 0, 1, 1, 1, 2, 2, 2]
[0, 0, 0, 1, 1, 1, 2, 2, 2]
Args:
:param readers: input readers.
readers: input readers.
:returns: the new data reader.
Returns:
the new data reader.
"""
"""
def
reader
():
def
reader
():
...
@@ -88,25 +84,23 @@ class ComposeNotAligned(ValueError):
...
@@ -88,25 +84,23 @@ class ComposeNotAligned(ValueError):
def
compose
(
*
readers
,
**
kwargs
):
def
compose
(
*
readers
,
**
kwargs
):
"""Creates a data reader whose output is the combination of input readers.
"""
Creates a data reader whose output is the combination of input readers.
If input readers output following data entries:
If input readers output following data entries:
(1, 2) 3 (4, 5)
(1, 2) 3 (4, 5)
The composed reader will output:
The composed reader will output:
(1, 2, 3, 4, 5)
(1, 2, 3, 4, 5)
Args:
:*readers: readers that will be composed together.
*readers: readers that will be composed together.
:check_alignment: if True, will check if input readers are aligned
check_alignment: If True, will check if input readers are aligned
correctly. If False, will not check alignment and trailing outputs
correctly. If False, will not check alignment and trailing outputs
will be discarded. Defaults to True.
will be discarded. Defaults to True.
Returns:
:returns: the new data reader.
the new data reader.
Raises:
:raises ComposeNotAligned: outputs of readers are not aligned.
ComposeNotAligned: outputs of readers are not aligned.
Will not raise when check_alignment is set to False.
Will not raise when check_alignment is set to False.
"""
"""
check_alignment
=
kwargs
.
pop
(
'check_alignment'
,
True
)
check_alignment
=
kwargs
.
pop
(
'check_alignment'
,
True
)
...
@@ -136,18 +130,17 @@ def compose(*readers, **kwargs):
...
@@ -136,18 +130,17 @@ def compose(*readers, **kwargs):
def
buffered
(
reader
,
size
):
def
buffered
(
reader
,
size
):
"""Creates a buffered data reader.
"""
Creates a buffered data reader.
The buffered data reader will read and save data entries into a
The buffered data reader will read and save data entries into a
buffer. Reading from the buffered data reader will proceed as long
buffer. Reading from the buffered data reader will proceed as long
as the buffer is not empty.
as the buffer is not empty.
Args:
:param reader: the data reader to read from.
reader: the data reader to read from.
:param size: max buffer size.
size: max buffer size.
Returns:
:returns: the buffered data reader.
The buffered data reader.
"""
"""
class
EndSignal
():
class
EndSignal
():
...
...
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