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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
上级
59ca13a3
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1
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1 changed file
with
24 addition
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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
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
buffered into shuffle buffer, and then shuffled. The size of shuffle buffer
is determined by argument buf_size.
Args:
reader: the original reader whose output will be
shuffled.
buf_size: shuffle buffer size.
:param reader: the original reader whose output will be shuffled.
:param buf_size: shuffle buffer size.
Returns:
the new reader whose output is shuffled.
:returns:the new reader whose output is shuffled.
"""
def
data_reader
():
...
...
@@ -55,7 +53,8 @@ def shuffle(reader, buf_size):
def
chain
(
*
readers
):
"""Creates a data reader whose output is the outputs of input data
"""
Creates a data reader whose output is the outputs of input data
readers chained together.
If input readers output following data entries:
...
...
@@ -65,11 +64,8 @@ def chain(*readers):
The chained reader will output:
[0, 0, 0, 1, 1, 1, 2, 2, 2]
Args:
readers: input readers.
Returns:
the new data reader.
:param readers: input readers.
:returns: the new data reader.
"""
def
reader
():
...
...
@@ -88,24 +84,22 @@ class ComposeNotAligned(ValueError):
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:
(1, 2) 3 (4, 5)
The composed reader will output:
(1, 2, 3, 4, 5)
Args:
*readers: readers that will be composed together.
check_alignment: If True, will check if input readers are aligned
:*readers: readers that will be composed together.
:check_alignment: if True, will check if input readers are aligned
correctly. If False, will not check alignment and trailing outputs
will be discarded. Defaults to True.
Returns:
the new data reader.
:returns: the new data reader.
Raises:
ComposeNotAligned: outputs of readers are not aligned.
:raises ComposeNotAligned: outputs of readers are not aligned.
Will not raise when check_alignment is set to False.
"""
check_alignment
=
kwargs
.
pop
(
'check_alignment'
,
True
)
...
...
@@ -136,18 +130,17 @@ def compose(*readers, **kwargs):
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
buffer. Reading from the buffered data reader will proceed as long
as the buffer is not empty.
Args:
reader: the data reader to read from.
size: max buffer size.
:param reader: the data reader to read from.
:param size: max buffer size.
Returns:
The buffered data reader.
:returns: the buffered data reader.
"""
class
EndSignal
():
...
...
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