1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
from sys import stdin
class TextLineInput:
"""
treat the input as lines of text
emit None as key and text line as value
"""
@staticmethod
def read_line(file=stdin):
"""
read and parse input file, for each line, yield a (None, line) pair
@return: yield a (None, line) pair
@param file: input file, default to stdin
"""
for line in file:
# split the line into words, trailing space truncated
yield None, line.strip()
class KeyValueInput:
"""
treat the input as lines of (key, value) pair splited by separator
emit text before separator as key and the rest as value
"""
@staticmethod
def read_line(file=stdin, separator='\t'):
"""
read and parse input file, for each line,
separate the line and yield a (key, value) pair
@return: yield a (key, value) pair
@param file: input file, default to stdin
@param separator: specify the character to
separate a line of input, default to '\t'
"""
for line in file:
yield line.rstrip().split(separator, 1)
|
